Papers by Author: Xiao Ying Zhang

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Authors: Jian Tao Niu, Xiao Ying Zhang, Na Na Pei, Qi Lei Tian
Abstract: Fabrics of cellulose fibers such as cotton, ramie and viscose were buried in activated sludge, the biodegradability of cellulose fibers and their fabrics were studied. And the relations between degradation rates, morphological structure and crystal structure of these fibers and degradation time were analyzed. The results indicated that, under the same conditions, degradation rate of viscose fiber was higher than that of cotton and ramie fibers. With the increase of degradation time, breakage to the fabrics occurred, meanwhile, fibers showed an increase of surface roughness and displayed a lot of tiny cavities and cracks. In the process of degradation, these cellulose fibers of cotton, ramie and viscose all formed new diffraction peaks near the place of 2θ=26.5°, in addition, the degrees of crystallinity of these fibers were fluctuated.
Authors: Wei Bo Guan, Xiao Ying Zhang
Abstract: The denier of raw silk is enlarged by selected high denier cocoon silk and combined silk filament. The silk impregnating agent was mixed with hot water in order to enhance the softness of silk when reeling silk. After reeling, the silk and polyester partially oriented yarn(POY)were combined and textured by mechanical force and heat, and the silk multifilament with physic mechanical and geometric distortion was produced. Several silk multifilaments were fed together into the yarn carrier of coarse V-bed flat machine and grey cloth was knitted. The silk knitting fabrics with coarse style were produced through refining and drying. Such fabric, which bulkiness, elasticity and drapability are excellent, is suitable for kinds of knitting outer wear.
Authors: Xiao Ying Zhang, Bao Zhong Wang, Min Zhang, Zhi Juan Pan
Abstract: The textured yarn was respectively prepared with pure silk, silk/polyester POY composite filament, silk/polyester FDY composite filament by the self-made processing device. The effects of heat shrinkage of polyester fibers on the structure and properties of the textured filaments were investigated. The results revealed that silk/POY composite filament contained higher heat shrinkage. Synthetic fibers produced crimps with larger amplitude and smaller bandwidth, and the textured filaments presented a larger yarn count, resulting in the notable crimped deformation.
Authors: Xiao Ying Zhang, Jian Tao Niu, Qi Lei Tian
Abstract: In order to study the biodegradability of protein fibers and their products, wool and silk fabrics were selected as the samples, and they were buried in the activated sludge of the riverside. Moreover, changes in the surface morphological structure and internal microstructure after degradation were observed and tested by scanning electron microscopy (SEM) and X-ray diffraction techniques. The results indicated that the degradation rate of wool fiber was higher than that of mulberry silk fiber in the activated sludge. In addition, with the increase of degradation time, there were traces gradually gnawed by microorganisms and some millipores and cracks appeared. Buried in the activated sludge for 40 days, both wool fiber and mulberry silk fiber formed new diffraction peaks near the place of 2θ=26°, meanwhile, the molecular structure of the fibers changed and the crystallinity decreased accordingly.
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