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Copyright of Precious Metals / Guijinshu is the property of Precious Metals Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

In this paper, PANI/CNTs composite materials were prepared by emulsion polymerization with sodium dodecyl benzene sulfonate (SDBS) and Tween-80 (Tween-80) as soft templates, ammonium persulfate (APS) as oxidant, and carbon nanotubes (CNTs) mixed with appropriate amount. The composite materials were characterized by scanning electron microscopy (SEM), X-ray powder diffraction (XRD) and Fourier transform infrared spectroscopy (FT-IR). The results show that PANI/CNTs composites present core-shell structure with fiber shape, and PANI materials cover the surface of CNTs uniformly. The electrochemical test results show that the specific capacitance of PANI/CNTs electrode is 478.48 F/g at the current density of 1.0 A/g. After 1 000 cycles, the specific capacitance retention rate of PANI/CNTs is 70.01%, while that of PANI prepared by traditional method is only 49.10%. The specific capacitance of PANI/CNTs composites obtained by emulsion polymerization is higher than that of PANI single material obtained by traditional method, and the cycle life is significantly improved. This method provides an important strategy for the preparation of electrode materials of high-performance supercapacitors. [ABSTRACT FROM AUTHOR]

Industrial and agricultural sewage discharge is one of the important factors causing water pollution, and the pathogenic microorganisms in sewage are extremely harmful to the ecological environment and human health. Therefore, it is significant to study novel comprehensive photocatalytic materials to achieve the removal of pathogenic microorganisms in water. In this paper, Ag/AgAg3PO4/CNTs composites with brilliant photocatalytic performance were prepared by a combination of deposition-in-situ reduction process, and the composites were analyzed and characterized in detail using a variety of characterization tools, such as morphological features, crystal structure, elemental composition, and photoelectric properties. The bactericidal efficiency of Ag/AgAg3PO4/CNTs composites in visible light was evaluated by plate spreading method. The Ag/AgAg3PO4/CNTs composites were able to deactivate all 107 cfu/mL of E.coli and 92% of S.aureus (107 cfu/mL) in 20 min under visible light irradiation. SEM results indicated that the surface of S.aureus treated with Ag/Ag3PO4/CNTs and Light appeared to be obviously collapsed and wrinkled. The content of genetic material (DNA) in the cells was analyzed, and the results showed that the DNA content in S.aureus treated with Ag/AgAg3PO4/CNTs and Light was significantly reduced, suggesting that the reactive oxygen species (ROS) produced by Ag/AgAg3PO4/CNTs under light can effectively damage bacterial DNA. The construction of Ag/AgAg3PO4/CNTs composites provides a new idea for effective removal of pathogenic microorganisms under visible light. [ABSTRACT FROM AUTHOR]

Copyright of Low-Carbon Chemistry & Chemical Engineering is the property of Low-Carbon Chemistry & Chemical Engineering Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Plastics Science & Technology / Suliao Ke-Ji is the property of Plastics Science & Technology Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Plastics Science & Technology / Suliao Ke-Ji is the property of Plastics Science & Technology Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Acta Materiae Compositae Sinica is the property of Acta Materiea Compositae Sinica Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Carbon nanotube fibers(CNTF), serving as one-dimensional macroscopic assemblies of carbon nanotubes(CNT), possess significant potential in translating the unique physical and chemical attributes of CNT from the nanoscale to the macroscale. Theoretically, the efficient interconnection and bottom-up integration of CNTs can facilitate the direct translation of their remarkable mechanical, electrical, and thermal properties from the microscale onto macroscopic fibers. Nevertheless, practical obstacles, including suboptimal CNT alignment during assembly, low packing density, and structural defects such as voids, hinder the effective translation of nanotube properties to the larger material scale. Recent advancements in CNT composite fibers demonstrate promising potential in addressing structural imperfections and enhancing property translation at the macroscale. This review comprehensively summarizes the latest research progress in carbon nanotube composite fibers, encompassing various preparation techniques and the subsequent fiber properties. These include nanomaterial/CNT composite fibers, polymer/CNT composite fibers, metal/CNT composite fibers, and ceramic/CNT composite fibers. A critical examination of both local and international research statuses pertaining to the enhancements in strength, conductivity, and thermal stability of these composite fibers is also presented. Finally, the review provides prognostications on the future development trajectory of carbon nanotube composite fibers. [ABSTRACT FROM AUTHOR]

Copyright of China Pulp & Paper is the property of China Pulp & Paper Magazines Publisher and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Polymer Materials Science & Engineering is the property of Sichuan University, Polymer Research Institute and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

This article investigated in detail the effects of carbon black, carbon nanotubes, graphene, copper chromium black and their additives on the thermal stability and infrared emissivity of radiation heat-dissipating coatings. Based on the application scenarios, the design principles of radiation heat dissipation coating formulations were discussed. The results show that copperchromium black pigment is better than the carbon nanotube and graphene pigment as used in radiative heat-dissipating coatings under high temeprature environment more than 450 °. The three pigments have similar application performance as used under middle and low temperature environment between 150 ° and 300 °. These research results are useful for coatings formula design and selection for different temperature environment [ABSTRACT FROM AUTHOR]

Electrocatalysis of CO2 to methanol has important research value in the carbon peaking and carbon neutrality goals. In order to improve the conversion rate of CO2 and selectivity of methanol, this paper coordinated the construction of LDHs/CNTs hybrid with acid-alkaline CuAl-LDHs and carbon nanotube materials (CNTs) with excellent electrical conductivity, realizing the complementary advantages of the two materials, and improving their methanol production performance and electrical conductivity in both directions. The results show that compared with LDHs, the good dispersion and abundant weak base sites of the two compounds are more conducive to the adsorption and rapid diffusion of CO2 molecules on the surface of the catalyst. Meanwhile, lattice oxygen with high mobility and monovalent copper species with high reduction potential form redox cycles on the catalyst surface, significantly reducing the mass transfer resistance and electron transfer difficulty. The results showed that CuAl-LDHs/5% CNTs had high selectivity and current density towards methanol at -0.6 V (for reversible hydrogen electrodes), up to 80.7% and -6.5 mA/cm², providing reference value for the development of LDHs-based electrocatalysts with high CO2 conversion at low potential and high current density. [ABSTRACT FROM AUTHOR]

This paper firstly describes the basic principle of low-temperature plasma technology. Secondly, the applications of plasma in surface modified carbon nanotubes, graphite, graphene oxide and new porous carbon materials are introduced respectively. And some research results in this field at home and abroad are listed. Some shortcomings of surface modification by low-temperature plasma are discussed and its future development is prospected. [ABSTRACT FROM AUTHOR]

The combination of one-dimensional carbon nanotubes and two-dimensional transition metal carbon/nitride (MXene), using the electrochemical deposition method and the hydrothermal method to deposit manganese dioxide (MnO2) on the surface of the composite fiber. The results indicated that the fiber supercapacitor deposited by electrochemical deposition has a higher volumetric specific capacitance than the fiber supercapacitor deposited by hydrothermal method. The specific capacitance at a current density of 1 A/cm³ is about 97.5 F/cm³. After 2 500 cycles of charging and discharging, its final capacitance retention rate is about 74.5% of the original. [ABSTRACT FROM AUTHOR]

In order to study the differences of structure, orientation and energy changes during the interfacial formation of single-walled carbon nanotube/crystalline and amorphous thermoplastic resin composites, built the bridge between microstructure and macroscopic properties, molecular models of single-walled carbon nanotubes/polypropylene (SWCNT/ PP), single-walled carbon nanotubes/polyethylene (SWCNT/PE) crystalline, single-walled carbon nanotubes/polystyrene (SWCNT/PS), single-walled carbon nanotubes/polymethyl methacrylate(SWCNT/PMMA) amorphous thermoplastic resin composite systems were established by molecular dynamics simulation. The forming process of the interphase was simulated, radial distribution function, interface energy and total energy were calculated. The simulation results showed that the formation process of the interphase of the SWCNT/PS and SWCNT/PMMA were mainly adsorption. While the formation process of the interphase of the SWCNT/PP and SWCNT/PE were divided into adsorption and orientation. The g(r) of the SWCNT/PP and SWCNT/PE firstly decreased sharply in the range of r, then the value of the g(r) increased sharply, therefore the interphase crystallized, forming a short-range ordered structure. At 2 000 ps, the interfacial energy of the SWCNT/PP and SWCNT/PE were -620.1 kcal/mol and -791.7 kcal/mol, which were smaller than that of the SWCNT/ PS and SWCNT/PMMA, so the interface bonding were better. The total energy of the SWCNT/PP and SWCNT/PE decreased gradually, which were -1 654.9 kcal/mol and -1 211.2 kcal/mol at 2 000 ps. Compared to the SWCNT/PS and SWCNT/PMMA, the total energy of the SWCNT/PP and SWCNT/PE were smaller, and the composite system were more stable. [ABSTRACT FROM AUTHOR]

Copyright of Polymer Materials Science & Engineering is the property of Sichuan University, Polymer Research Institute and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Carbon nanotubes as novel nanomaterials, which are widely used in biomedical field. Through the respiratory tract, digestive tract, and circulation, carbon nanotubes can come into contact with vascular endothelial cells and damage the endothelial cells. In this paper, the factors effecting the damage of carbon nanotubes to endothelial cells was reviewed, and the effects of carbon nanotubes on endothelial cell inflammation, monocyte adhesion, lipid accumulation, endothelial permeability, angiogenesis, and pro-coagulant ability were reviewed. Meanwhile, this paper reviewed that carbon nanotubes promote the formation of atherosclerotic plaques and the impairment of blood-brain barrier function by damaging endothelial cells in animal experiments, so as to provide a reference for decision-making on the application of carbon nanotubes in biomedical field [ABSTRACT FROM AUTHOR]

Copyright of Plastics Science & Technology / Suliao Ke-Ji is the property of Plastics Science & Technology Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Acta Materiae Compositae Sinica is the property of Acta Materiea Compositae Sinica Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Acta Materiae Compositae Sinica is the property of Acta Materiea Compositae Sinica Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

BACKGROUND: Although nerve conduits provide an effective treatment approach for nerve repair, traditional nerve conduits merely serve as mechanical channels in the repair process. The therapeutic effect still needs to be improved. Carbon nanomaterials have good physicochemical properties and hold great potential in fields such as electrochemistry and tissue engineering. Nerve conduits loaded with carbon nanomaterials, after appropriate functional modifications, are expected to further enhance the quality of nerve repair. OBJECTIVE: To review the recent research progress of carbon nanomaterial-loaded nerve conduits/scaffolds for peripheral nerve repair. METHODS: PubMed, Web of Science, China National Knowledge Infrastructure (CNKI), and Wanfang databases were searched for the literature on the application of carbon nanomaterial catheters in peripheral nerve regeneration. English keywords were “carbon nanomaterials, carbon-based nanomaterials, nerve conduit, nerve guidance conduit, scaffold, nerve regeneration, peripheral nerve repair, peripheral nerve injury” and Chinese keywords were “carbon nanomaterials, carbon materials, graphene, carbon nanotubes, nerve conduits, nerve scaffolds, nerve repair, nerve regeneration, peripheral nerve injury”. Finally, 69 articles were selected for this review. RESULTS AND CONCLUSION: (1) Carbon nanomaterials primarily restore damaged neural bioelectric signal conduction by activating calcium ion channels and inducing intracellular calcium activity. The application of various nerve conduit design strategies has improved the effectiveness of nerve repair. (2) Successful intraneural vascularization is the prerequisite for repairing peripheral nerve injuries. Reactive oxygen species and reactive nitrogen species generated by carbon nanomaterials trigger subsequent signaling pathways that promote intraneural vascularization. (3) The ratio of M1 to M2 macrophages affects the repair of peripheral nerve injuries. Carbon nanomaterials promote the polarization of macrophages into the M2 phenotype, thereby exerting their anti-inflammatory and regenerative effects. (4) Some carbon nanomaterials may induce excessive generation of reactive oxygen species intracellularly, potentially exhibiting cytotoxicity detrimental to nerve repair. However, appropriate functional modifications can improve the adverse effects caused by carbon nanomaterials. (5) Although carbon nanomaterials can restore the microenvironment of peripheral nerve injuries and play a positive role in promoting peripheral nerve regeneration, their inherent cytotoxicity and unclear in vivo degradation pathways still pose challenges for clinical application. However, by employing methods such as functional modification, it is possible to enhance the biocompatibility of carbon nanomaterials. Modified carbon nanomaterials have promising prospects in the field of neural tissue engineering. [ABSTRACT FROM AUTHOR]

To achieve carbon nanotube spandex composite materials with superior conductivity and elasticity, carbon nanotube were adhered to the surface of spandex filament using an impregnation method. Amino groups were introduced to the spandex surface through a solution of 3-aminopropyltriethoxysilane. Subsequently, the treated spandex was immersed in dispersions of carboxylated multi-walled carbon nanotubes with varying mass fractions to create a composite sensing material with a carbon nanotube coating. The infrared spectrum, mechanical property, conductivity and so on of carbon nanotube spandex material were evaluated and analyzed. The results showed the number of CNT on the spandex surface was increased as the CNT mass fraction increased. When the CNT mass fraction was reached 7%, the number of CNT was increased significantly and accompanied by the presence of numerous pores on the surface. Despite a reduction in strength and breaking elongation compared to the original spandex yarn due to the CNT coating, the composite yarn maintained a breaking elongation ratio over 1 000%. When CNT mass fraction was increased from 1% to 5%,under different tensile strains, the sensing yarn exhibited a significant relative change in resistance, which indicating a sensitive response. Throughout 500 times stretching/releasing cycles, the sensing yarn demonstrated minimal peak and baseline fluctuations in response to resistance changes, showcasing stable performance. It is considered that carbon nanotube coating spandex sensing materials exhibit a rapid response time and excellent strain response stability. It holds potential applications in the field of small strain sensing. [ABSTRACT FROM AUTHOR]

Copyright of Acta Materiae Compositae Sinica is the property of Acta Materiea Compositae Sinica Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Carbon nanotubes (CNTs), as one-dimensional nanomaterials, have excellent electrical, thermal and mechanical properties, and are widely used as reinforcing agents for composite materials. Herein, the electrical and mechanical properties of different types of hybrid structure based on carbon nanotubes are reviewed, i.e., carbon/particles, carbon nanotube/fiber, carbon nanotube/pieces of foam layer, carbon nanotube/lightweight materials, where the underline mechanism for the enhancement of the electrical and mechanical properties are analyzed, in together with the advantages of different hybrid structures. The present review shed lights on the construction and design of carbon nanotube-based hybrid materials in the future. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Refrigeration is the property of Journal of Refrigeration Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of China Pulp & Paper is the property of China Pulp & Paper Magazines Publisher and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Acta Materiae Compositae Sinica is the property of Acta Materiea Compositae Sinica Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

As a multifunctional filler, carbon materials play an important role in enhancing the comprehensive properties of polypropylene composites. However, it is an important task to balance the relationship between the amount of different carbon materials and the formability and functionality of composite products. In this paper, the properties of carbon fiber, carbon nanotube and graphene, and the effects of these carbon materials on the mechanical, thermal and electrical properties of polypropylene-based multi-scale composites are discussed respectively. It is pointed out that it is a challenging research direction to prepare polypropylene composites filled with high content and hybrid carbon materials by melt deposition 3D printing process in the future. [ABSTRACT FROM AUTHOR]

In order to enhance dispersity and compatibility of the carbon nanomaterials in polar/non polar solutions and polymers, carbon nanotube and graphene were modified using ethyl acetate as a monomer by free radical polymerization. The effects of coatings on carbon nanomaterials were characterized by infrared spectra, thermogravimetric analysis, scanning electron microscope, and Raman spectrum. Through infrared spectra, the coated carbon nanomaterial exhibited a characteristic absorption peak of vinyl acetate, and a significant weight loss occurred at 170~240 °C in the thermogravimetric curves. From Raman spectrum, the ID/IG of the modified carbon nanotubes and graphene decreased from 1.730 and 1.040 to 1.090 and 0.985, respectively, indicating an increase in the degree of graphitization. The results indicate the success of vinyl acetate modified carbon nanomaterials. Dispersity and compatibility of modified carbon nanomaterials were assayed by ultraviolet spectra, discovering that the coated carbon nanomaterials exhibit excellent dispersibility and stability. The results indicated that the surfaces of carbon nanomaterials were coated by polyvinyl acetate via in-situ polymerization. The structures of carbon materials were not destroyed by coating process and their properties were kept. When the mass ratios of polyvinyl acetate to carbon materials were 1:1 and 2:1, the results of coating were excellent. Furthermore, the modified carbon nanomaterials possessed the perfect dispersity and stability. [ABSTRACT FROM AUTHOR]

With the continuous improvement on the preparation process of the carbon nanotube-reinforced aluminum matrix composites, the difficult dispersion problem of the carbon nanotubes has been properly solved, and the composite strength has been improved, but the high modulus and high strength of the composites have not been fully utilized, and the “strength-plastic” inversion phenomenon has appeared. The adjustment methods of interface structure, grain structure, and composite configuration design of the carbon/aluminum composites in recent years were summarized in this paper, the influence of interface structure strength on the load transfer efficiency of the carbon nanotubes was discussed, the causes of inversion phenomenon were analyzed, and the control ideas were proposed to solve the problem of poor plastic toughness of the composites, providing the basis for preparing the carbon nanotube-reinforced aluminum matrix composites with high strength and toughness.

Porous polyvinyl alcohol/β -Tricalcium phosphate/carbon nanotubes (PVA/β -TCP/CNT) composites were prepared by freeze-thaw method, and the effects of CNT addition on the porosity and mechanical properties of CP/CNT composite materials were investigated. The results show that adding an appropriate amount of CNT can effectively reduce the pore size and porosity of PVA/β-TCP/CNT porous composites ensure the formation of a denser porous structure in the porous polyvinyl alcohol composites. When the CNT addition amount is 0.3%~0.5%, the porosity of the composites is the lowest, about 82%. After adding CNT, the elastic modulus and tensile strength of PVA/β-TCP/CNT porous composites were significantly improved, and the swelling of PVA/β-TCP/CNT porous composites is significantly decreased. When the CNT addition is 0.3%, the elastic modulus and tensile strength of the composites reach 2 245.08 MPa and 6.61 MPa, respectively. The prepared PVA/β-TCP/CNT porous composites can meet the requirements of medical biomaterial polymer scaffolds. [ABSTRACT FROM AUTHOR]

Biomass is a renewable energy resource with rich content in China. The products of the carbonization of biomass materials have been widely used in energy storage, adsorption materials, and other fields. Studying the carbonization process of biomass materials is crucial for the efficient use of biochar. This article summarizes the effects of biomass types and carbonization conditions (such as carbonization temperature and pretreatment) on the structure, morphology, and properties of carbon in carbonization products. The aim is to provide a theoretical foundation for the effective use of biomass carbonization products. Various biomass materials and biochar can be prepared after treatment. The contents of cellulose, hemicellulose, lignin, and ash in different types of biomass materials vary greatly, and the carbon content, carbon structure, morphology, and properties of the products after carbonization differ. Therefore, selecting appropriate biomass materials based on usage requirements is essential. The carbonization temperature of biomass materials plays an important role in the pyrolysis of biomass. As the carbonization temperature increases, cellulose, hemicellulose, and lignin gradually decompose into gases with small molecules. Furthermore, as the carbonization temperature continues to increase, the internal structure of biomass carbon continues to rearrange, forming a dense aromatic carbon network plane of macromolecules, which increases the graphitization degree of biomass carbon. Additionally, the temperature greatly affects the structure and amount of the products of biomass carbonization. The activation of biomass materials further enhances the specific surface area and adjusts the pore structure of biomass carbon. Chemical activators such as acids, alkalis, and salts are commonly used and have their own advantages and disadvantages. Appropriate activators should be selected by a comprehensive consideration of usage requirements to activate the biomass. This article summarizes the preparation of carbon nanotubes by the carbonization of biomass materials through the template and chemical vapor deposition methods under the action of a catalyst. Further, the influence of components such as lignin and cellulose in biomass materials on the preparation of carbon nanotubes is analyzed. Cellulose in biomass materials has a small molecular weight and is easy to pyrolyze, resulting in gases with smaller molecules. However, lignin has a large molecular weight, is difficult to decompose, and produces less amount of small molecular gas. Therefore, biomass materials with high cellulose content are found to facilitate the preparation of carbon nanotubes. On this basis, the application prospects of biomass materials in carbon-containing refractories have been considered and examined to provide ideas for the preparation of new carbon-containing refractories with low cost and good properties.

Using polypropylene (PP) as a matrix and carbon nanotube (CNTs) as a modified material to prepare CNTs/PP composites, the effects of solid-phase drawing and CNTs on properties of PP-based composites after solid-phase drawing were analyzed. Crystallization, mechanical and electromagnetic shielding properties of the composites were studied by wide angle X-ray diffraction, 2D wide angle X-ray diffraction, small angle X-ray scattering, differential scanning calorimetry, polarizing microscope, scanning electron microscope, universal test machine, and vector analyzer. The results show that the solid-phase drawing and CNTs increase the tensile strength of the composite and reduce its elongation at break; the addition of CNTs plays a clear heterogeneous nucleation, refines the grain and improve the crystallinity, and the crystal formation of the CNTs/PP composite before and after the solid-phase drawing does not change, but the α-crystal for PP is improved significantly. The crystallinity of the composites is slightly decreased with increasing solid-phase drawing rate. The solid-phase drawing treatment and CNTs can improve the electromagnetic shielding performance, but make the electromagnetic shielding performances reduce after high drawing rate treatment.

High-dielectric polyvinylidene fluoride (PVDF) composites are widely used in electronic communications, new energy storage, aerospace and other fields due to their advantages of light weight, good flexibility, and easy processing. At present, PVDF matrix composites are mainly divided into two categories: inorganic/organic composite system and full organic composite system, but the application of full organic system is limited by its complex chemical process. This paper reviews the application status and research progress of three inorganic fillers in PVDF-based dielectric materials, namely ceramic particles, metal particles and carbon particles, and focuses on the research progress of expanded graphite, graphene oxide, carbon nanotubes, carbon black and carbon fiber in carbon fillers, and looks forward to the modification direction of inorganic fillers in PVDF composites. [ABSTRACT FROM AUTHOR]

Nanofibers have the advantages of high strength, high specific surface area, ultra-fine size, high flexibility and biocompatibility, and are widely used in various fields. Polyacrylonitrile/carbon nanotube (PAN/CNTs) composite nanofibers with adsorption function for volatile organic compounds (VOCs) were prepared based on electrospinning technology. By optimizing the experimental parameters, such as spinning solution concentration, spinning voltage and receiving plate distance, the most suitable combination of parameters for PAN fibers in the electrospinning process was explored. The results show that when the concentration of spinning solution is 12%, the spinning voltage is 18 kV. When the distance between the receiving plates is 14 cm, the morphology of PAN fibers is regular, the size is uniform, and the average diameter is 200 nm. After the addition of CNTs, the fiber diameter increases to 400 nm, but the structure of PAN does not change. When the content of CNTs is 3%, the morphology of the fibers is the best. The adsorption experiment of VOCs shows that the adsorption efficiency of PAN fiber membrane for xylene gas increased to about 90% by the introduction of CNTs. [ABSTRACT FROM AUTHOR]

Multi-walled carbon nanotubes (MWCNTs) play an important role in strengthening and toughening epoxy resin (EP) materials, but the surface activity of MWCNTs is different, and their mechanical properties, dispersion and interfacial bonding are very different, which is closely related to the curing mechanism of EP composites. In order to clarify the curing mechanism of epoxy resin/multi-walled carbon nanotube (EP/MWCNTs) composites and the influence mechanism of the introduction of MWCNTs on the curing behavior of EP matrix, the analysis methods of moving window 2D correlation infrared and generalized 2D correlation infrared were used to compare and analyze the variation of characteristic functional groups of pure EP and EP/MWCNTs during the heating and curing process. The results show that the curing process of pure EP is mainly the curing reaction between EP and primary amine group, and the ring opening of EP generates a new hydroxyl group and C--H without ring tension, while the 'steric hindrance effect' of EP/MWCNTs hinders the reaction process of EP in the early stage of curing, and the addition of MWCNTs has little effect on its curing mechanism. The difference is that during the curing process of EP/MWCNTs, the response of the primary amine group in the curing agent occurs before the epoxy group. [ABSTRACT FROM AUTHOR]

Copyright of Polymer Materials Science & Engineering is the property of Sichuan University, Polymer Research Institute and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Carbon nanotubes were selected as the reinforcing phase and a carbon nanotube toughened Al-Mg alloy composite material was prepared by stirring casting method. The effects of the amount of carbon nanotubes added on the mechanical properties, microstructure and toughness of the composite materials were studied, and the toughening mechanism of carbon nanotubes on Al-Mg alloy was explored. The results showed that the addition of an appropriate amount of carbon nanotubes refined the grain size of the Al-Mg alloy composite material, with a grain size of approximately 80/im. When the addition amount of carbon nanotubes was 0.8 wt%, the fracture morphology of the composite material was the most uniform. As the amount of carbon nanotubes added increased, the tensile strength, elongation at break, and hardness of the composite material showed a trend of first increasing and then decreasing. When the addition amount of carbon nanotubes was 0.8 wt%, the tensile strength, elongation at break, and hardness all reach their maximum values, which were 208.6 MPa, 15.8% and 53.1 HB, respectively. The addition of appropriate amount of carbon nanotubes significantly improves the toughness of Al-Mg alloy, gradually increasing the fracture elongation, prolonging the yield stage, and improving the toughness. This is because an appropriate amount of carbon nanotubes can bind well with the alloy and penetrate the cracks of the alloy, exerting a bridging effect and hindering the initiation and propagation of cracks, thereby improving the toughness of Al-Mg alloy composites, delaying the failure process of the alloy, and extending the yield stage of the alloy. Based on the above analysis, it can be concluded that the optimal addition amount of carbon nanotubes is 0.8 wt%. [ABSTRACT FROM AUTHOR]

Tn this paper, a flexible carbon cloth was used as the fluid collector of the composite electrode, and the high-conductivity carbon nanotubes (CNTs) were embedded into the polyvinylidiene fluoride (PVDF) binder by electrostatic flocking to obtain a composite structure with a larger electrochemically active surface area. Then, polyaniline (PANT) with pseudo capacitance characteristics was plated on the surface of CNTs by electrochemical deposition, and a binary composite electrode with carbon nanotubes/polyaniline (CNTs/PANT) was obtained. The structure of the electrode material was characterized by scanning electron microscopy (SEM). The flexible solid-state supercapacitor (SSC) with symmetrical structure was assembled with polyvinyl alcohol (PVA) hydrogel electrolyte containing sulfuric acid, and its electrical performance was tested by electrochemical workstation. The results show that the SSC has a specific capacity of 517 mF/cniJ at a current of 1 mA/cm2. After 250() cycles, it has a capacity retention rate of 79.8% and a Coulomb efficiency of more than 97%. The study shows that electrostatic flocking technology can be used as an effective way to prepare high performance electrode materials. [ABSTRACT FROM AUTHOR]

Copyright of Plastics Science & Technology / Suliao Ke-Ji is the property of Plastics Science & Technology Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Mechanical Strength / Jixie Qiangdu is the property of Zhengzhou Research Institute of Mechanical Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Advanced Textile Technology is the property of Zhejiang Sci-Tech University Magazines and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Carbonyl compound has attracted great interest as the electrode material of polymer rechargeable battery owing to its potentially low-cost, sustainable, fast electrochemical reaction kinetics and multi-electron transfer capabilities. Among various carbonyl compounds, anthraquinone has been widely investigated in the past few years due to its excellent electrochemical stability and unique aromatic properties. Common anthraquinone materials often suffer from loss of capacity due to their low electronic conductivity and solubility in the organic electrolyte, which negatively affect the rate performance and cycling stability. Therefore, it is still challenging to develop anthraquinone based electrode with superior electrochemical performance. Many strategies have been attempted to address the above issues. Among them, the polymerization has been proved to be an effective strategy to reduce the solubility. Moreover, incorporating conductive additive with high specific surface area to form composites has also been demonstrated as an efficient approach to suppress dissociation dissolution and improve the electron transport in electrodes. Herein, a novel composite electrode material poly1,5-anthraquinone-coated carbon nanotube (CNT@P15AQ) was prepared via facile in-situ polymerization. After polymerization, the stability of anthraquinone in the organic electrolyte is significantly improved. In addition, the introduction of CNT can construct longrange electron transport pathways. Satisfactorily, the first discharge specific capacity of CNT@P15AQ composite electrode with 29% CNT mass fraction can reach 241.7 mA·h/g at a current density of 50 mA/g, which is 1.44 times higher than that of P15AQ. Meanwhile, the CNT@P15AQ composite electrode also exhibits excellent rate performance and cycle stability, which exhibits a reversible specific capacity of 148.5 mA·h/g at 10 C and retains 84.7% of its initial discharge capacity after 100 cycles at 1 C. High-performance CNT@P15AQ composite electrode with simple preparation method provides a broad application prospect of the next generation of rechargeable battery based on polymer electrode. [ABSTRACT FROM AUTHOR]

Considering the problem of icing in civil aircraft flying at high altitudes and in cold areas, the composite coating was prepared by doping a certain content of carbon nanotubes (CNT) in Epoxy resin (Ep), which optimised and improved the de-icing performance of civil aircraft. At the same time, the anti-corrosion performance of the CNT-modified Ep on the wing skin was investigated. The test shows that when the CNT content is 0. 5%, the photothermal performance of the composite is good, and the temperature rise is obvious. The photothermal cycling stability test shows that when the CNT content is 0. 5%, the composite coating has photothermal stability under 150 mW/ cm² light. The self-healing performance analysis test shows that after a certain degree of surface damage, the composite coating can achieve self-healing by heating. In the polarisation curve analysis of the electrochemical station (CHI660E) test, the maximum corrosion potential of the composite coating with 0. 5% CNT content is - 1. 510 V, indicating the lowest corrosion rate compared to others. In the static full immersion test, the composite coating with 0. 5% CNT content is reduced the least, indicating its good corrosion resistance. [ABSTRACT FROM AUTHOR]

In order to study the influences of carbon nanotubes (CNTs) on compressive mechanical properties of cement-based materials, uniaxial compressive test was conducted on cement-based materials with different of CNTs content (0% ~1. 0%, mass fraction), and acoustic emission (AE) and digital image correlation method (DIC) were used for whole process monitoring. The results show that with the addition amount of CNTs, the compressive strength of specimen increases first and then decreases. The compressive strength of specimen reaches the maximum value when the content is 0. 6%, which is 23. 6% higher than that of control group. When the content of CNTs is 0.8%, the compressive strength of specimen is 10.6% lower than 0.6% CNTs group and 10.5% higher than that of control group. The ringing count and energy change are in good agreement with stress-strain curve of specimen during loading. The ringing count and energy sudden increase can be used as early warning basis for the damage and failure of specimen. The strain value in loading stage increases first and then decreases with the increase of CNTs content, and the specimen with low compressive strength first shows obvious strain changes. The main strain cloud diagram is mainly axial distribution, indicating that the failure mode of specimen surface is mainly vertical splitting. [ABSTRACT FROM AUTHOR]

Copyright of Lubrication Engineering (0254-0150) is the property of Editorial Office of LUBRICATION ENGINEERING and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Materials Engineering / Cailiao Gongcheng is the property of Journal of Materials Engineering Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Acta Materiae Compositae Sinica is the property of Acta Materiea Compositae Sinica Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The curing kinetics of pure epoxy resin (EP), epoxy resin/carbon nanotubes composites (EP/MWCNTs), epoxy resin/hyperbranched polyester modified carbon nanotubes composites (EP/MWCNTs-H204) and epoxy resin/ hyperbranched polyamide modified carbon nanotubes composites (EP/MWCNTs-N103) were studied by differential scanning calorimetry (DSC). The activation energy of each system was calculated based on Kissinger's method and Ozawa's method, respectively. The results show that the EP/MWCNTS-H204 and EP/MWCNTS-N103 systems modified by hyperbranched polymer have lower apparent activation energy than the other two systems without modification, which indicates that the introduction of hyperbranched polymer has a significant promotion on the curing reaction of epoxy resin composites. The automatic catalytic model (Sesták-Berggren) is obtained by Málek method. The kinetic parameters and equations describing the curing process are proposed by using Sesták-Berggren to theoretically calculate each system. The similarity between the theoretical calculation results and the experimental results is high, indicating that the Sesták- Berggren model can well describe the curing kinetic behavior of four different epoxy resin systems. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Guangdong University of Technology is the property of Journal of Guangdong University of Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)