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In order to decrease the resistance-capacitance delay and signal crosstalk in ultra large-scale integrated circuits (ULSIC), dielectric materials with ultra low dielectric constants are developed to be the replacement of silicon dioxide. Introduction of air on the matrix material is an important method to reduce the dielectric constant, and polyimide (PI) is the most promising polymer to prepare porous matrix material for its distinct advantages. PI membrane with nanopores was prepared by the method of template method (i.e. thermolysis of polystyrene nanospheres in the matrix) following the synthesis of template. The nanoporous membrane was characterized by Fourier transformer infrared, scanning electron microscopy, thermogravimetric analysis, and the dielectric constant of which was measured. Results showed that uniform nanopores about 100-200 nm were formed in the PI membrane, and dielectric constant of which was decreased to 2.08 from 3.34. The nanoporous membrane can be applied as potential low- k dielectric material in ULSIC. Copyright © 2015 John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR]

Highlights: [•] Polycarboxylate (PC) additive for CWS was synthesized and characterized. [•] PC additive is a comblike polymer with COOH and CONH2 groups. [•] CWS based on bituminous coal with PC additive displayed better properties. [•] Simultaneously using of PC and aliphatic additives enhanced the CWS performance. [•] PC additive exhibited improved properties because of its steric hindrance effect. [Copyright &y& Elsevier]

Fabric strain sensors based on intrinsically conducting polymers ( ICPs) have been extensively studied recently owing to their ease of preparation, unique properties and many potential applications. Research on ICP-based fabric strain sensors, including fabrication, performance and applications of the sensors, is summarized and reviewed in this paper. The conductivity and morphology of ICP-coated fabrics can be easily adjusted by controlling the synthesis conditions, leading to sensors with varied performances. Moreover, the performances of the sensors can be controlled by various other choices, such as selecting the right fabric substrates, the appropriate stretching directions, etc., giving these sensors many potential applications. © 2013 Society of Chemical Industry [ABSTRACT FROM AUTHOR]

• A novel silicone-acrylate copolymer is prepared by bulk polymerization. • A cross-linked anti-fouling SAP/HDPE/SiO 2 composite is fabricated. • The composite has good thermal stability and anti-fouling properties. To mitigate clogging during industrial wastewater piping, a low surface energy composite was prepared by incorporating Silicon-containing acrylate polymer (SAP) and hydrophobically modified SiO 2 nanoparticles into High-density polyethylene (HDPE) matrix. The morphological structure, thermal behavior, and anti-fouling performance of the composite were studied. The results showed that the prepared composite has both good thermal stability and compatibility. The acrylate polymer and nanoparticles in the composite not only enhance its hydrophobicity but also decrease the associated surface energy, which may reduce pipe clogging potentials. Besides, the anti-fouling performance of the prepared composite is superior to that of the typical commercial pipe materials, e.g., Polyvinyl chloride (PVC), Polypropylene random (PPR), and Acrylonitrile butadiene styrene (ABS), indicated by a dispensing industrial wastewater immersion experiment. [ABSTRACT FROM AUTHOR]