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To investigate the structure and some properties of acrylonitrile based casein fibers, the XRD, SEM, DSC, TG and etc were all used in this paper. The results showed that the cross-section of the fiber was somewhat round and there were many irregular vertical trenches and pockmarks in its surface. The X-ray pattern of the fiber was similar to that of the PAN and the degree of crystallization was 54.34%. The specific strength and elongation at break was 3.1 cN/dtex and 35.2% respectively and the standard equilibrium regain was 4.2%. DSC curve showed that the Tg (Glass Transition Temperature) was between 57°C~103°C and the wide heat absorption curve at 212°C~300°C was caused by the combination of the change of casein, AN and some other monomers. Finally, the results of TG showed that the introduction of the casein is help to improve the thermal stability of the milk protein fiber at high temperature. [ABSTRACT FROM AUTHOR]

Raw jute bast fibre is stiffness, harshness, and coarse. The objective of the current investigation was to develop process recipes for the production of finer jute fibre which can be used in textiles. Retted jute fibres were treated by combination of alkali and laccase processes. Alkali and laccase processes were optimized based on linear density, gum content, lignin content, and breaking strength of jute fibres. The results show that the optimum alkali process is sodium hydroxide concentration 20 g/L, sodium sulfite concentration 20 g/L, at 120 °C for 120 min and the best laccase process is laccase at 15 g/L for 90 min at 55 °C. The degummed jute fibres were blended with different percentage of cotton fibres and spun into 27.8 tex blended yarn on the compact spinning frame successfully. [ABSTRACT FROM AUTHOR]

Electrostatic flocking technology is to flock in electrostatic field, that is, charged pile is preferably propelled toward an adhesive coated substrate by electrostatic force. In this paper, superfine fibers (0.1 dtex) were used as the pile and flocked into a fabric coated with adhesive under different process. The effect of induced voltage, operating time, and the distance between electrodes on density of the pile were discussed respectively. The experimental results showed that density of the pile increased with the increase of induced voltage and operating time, while decreased with the increase of distance between electrodes. Furthermore, density of the pile could reach maximum by the optimization of flocking process. The scanning electron microscopy study confirmed a high density of pile under optimized process. [ABSTRACT FROM AUTHOR]

Nonwoven geotextiles have been widely used for separation, filtration, reinforcing and drainage. The filtration and drainage functions are especially attractive in the construction of soil structures. However, geotextiles may not prevent excess soil particles loss and allow a proper degree of water flow as effectively as initially expected, because the soil-geotextile system may become ineffective due to clogging. In this paper, an original two- layered nonwoven geotextile is produced according to the specification value for the function of filtration and drainage and experimentally discussed on the filtration behavior. The tests are performed on five different geotextiles. Experimental results indicate that with the increase of needle-punching density pore size initially reduces and then increases, whereas clogging potential firstly increases and then decreases. The geotextile can have optimal filtration properties at the needle punching density of 470 p/cm2. [ABSTRACT FROM AUTHOR]

With the rapid advancement of artificial intelligent technology, wearable electronic skins become more and more indispensable to daily life. However, how to fabricate such devices in terms of high elasticity and breathability remains a challenge and highly desired. Here we report a novel route to develop an all-fiber structured electronic skin with scalable fabrication technique. The fabricated electronic skin was demonstrated to exhibit high pressure sensing with a sensitivity of 0.18 kPa-1 in the detection range of 0-100 kPa. The fabricated electronic skin can maintain prominent sensing performance and mechanical stability in the presence of large deformation, even when the elastic deformation was up to 50%. The electronic skin was easily conformable on different desired objects for real-time spatial mapping and long-term tactile sensing. Meanwhile, it possessed high gas permeability with a water vapor transmittance rate of 10.26 kg m-1 d-1. More importantly, the electronic skin was capable of working in a self-sufficient manner and even serving as a sustainable power source to effectively drive small electronics. Holding a collection of compelling features, such as high sensitivity, high elasticity, high breathability as well as being self-powered and scalable fabrication, the presented work paves a new pathway for smart electronic skins, with great potential for smart robots, interactive wearable devices, artificial prosthetics and insensitive patients. [ABSTRACT FROM AUTHOR]

The polyurethane (PU) has been used as coating materials on cotton fabrics. By measuring the results of different coating thickness on fabrics, the optimized way of coating and coating-amount were found and the principle about the tearing strength's decrease of coated fabrics was studied also. The different proportion of mixing of the amino-silicone and the polyurethane has been adopted. Comparing to the water proof ness, moisture permeable and the tearing strength of these fabrics, the optimized proportion of silicone and PU was fixed and the phenomenon that the cotton fabric tearing strength will drop down after coating was effectively solved. [ABSTRACT FROM AUTHOR]