The Experts below are selected from a list of 264 Experts worldwide ranked by ideXlab platform
R Tang - One of the best experts on this subject based on the ideXlab platform.
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structure and thermal properties of bamboo Viscose tencel and conventional Viscose fiber
Journal of Thermal Analysis and Calorimetry, 2007Co-Authors: Ying Xu, Z Lu, R TangAbstract:Comparative investigations of new regenerated cellulosic fibers, bamboo Viscose fiber and Tencel, together with conventional Viscose fibers have been carried out to explain the similarity and difference in their molecular and fine structure. The analyses jointly using SEM, XRD and IR reveal that all the three fibers belong to cellulose II. Tencel consists of longer molecules and has a greater degree of crystallinity, while bamboo Viscose fiber has a lower degree of crystallinty. TG-DTG-DSC study shows three fibers resemble in thermal behavior with a two-step decomposition mode. The first step is associated to water desorption, suggesting that bamboo Viscose fiber holds better water retention and release ability, the second a depolymerization and decomposition of regenerated cellulose, indicating that Tencel is more thermally stable in this process than bamboo and conventional Viscose fiber.
Weilin Xu - One of the best experts on this subject based on the ideXlab platform.
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Fabrication of durable antibacterial and superhydrophobic textiles via in situ synthesis of silver nanoparticle on tannic acid-coated Viscose textiles
Cellulose, 2019Co-Authors: Yiming Bu, Yajun Cai, Yingying Yang, Sitian Ma, Dezhan Ye, Yingshan Zhou, Jingjing Huang, Hongjun Yang, Shiyu Zhang, Weilin XuAbstract:A durable antibacterial and superhydrophobic Viscose textile has been developed via in situ growing silver nanoparticles (NPs) on tannic acid (TA)-coated Viscose textiles and further hydrophobic treatment under mild reaction condition. The surface morphology and chemical composition of the modified textile have been characterized by scanning electron microscopy, energy dispersive X-ray spectroscopy, X-ray diffraction analysis and X-ray photoelectron spectroscopy. The as-prepared Viscose textile shows high static water contact angles (> 150°) and excellent antibacterial properties against E. coli and S. aureus. The durability of the superhydrophobic and antibacterial textiles is evaluated by repeated stringent washing-cycles. Due to a good adhesion of Ag NPs on TA-coated Viscose textiles, the as-prepared textiles retain their excellent antibacterial property and superhydrophobicity after 50 washing cycles. The robustness of superhydrophobicity and antibacterial activity allows this method to be developed and exploited in biomedical application in the future.Graphical abstract
Zhou Zhao - One of the best experts on this subject based on the ideXlab platform.
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Characterization of flame-retardant performance of polyester/flame-retardant Viscose blended yarn
Journal of Industrial Textiles, 2018Co-Authors: Zhou Zhao, Libin Gao, Youbo Di, Wei Wang, Xing WuAbstract:In this paper, a flame-retardant blend yarn was designed with flame-retardant Viscose fiber and polyester. Flame-retardant Viscose fiber was blended with polyester by core-spun method. Polyester wa...
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preparation and characterization of solution spinning of protein cellulose fiber a new flame retardant grade
Journal of Industrial Textiles, 2017Co-Authors: Zhou Zhao, Weiren Bao, Youbo Di, Jinming DaiAbstract:A new flame-retardant protein Viscose fiber with safely wearing performance has been prepared through blending protein solution, flame retardant (hexaphenoxycyclotriphosphazene) and Viscose spinning solution, in which wool protein was used and added to spinning solution on the basis of 16% flame retardant, and the properties of the fiber were investigated. The product has more compact structure inside the fiber and evenly scattered small pores on the surface. Flame-retardant protein Viscose fiber can reach the flame-retardant standard both before and after 30 times wash test, and the mechanical strength of the fiber was also improved. The introduction of hexaphenoxycyclotriphosphazene lowered the primary decomposition temperature of Viscose fiber, reduced its weight loss. The flame-retardancy of the fiber can be improved by the introduction of protein. In thermal processes, the major product of thermal decomposition was CO2, no hazardous and noxious gases were released. Due to the introduction of protein,...
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Preparation and characterization of solution spinning of protein/cellulose fiber: A new flame-retardant grade:
Journal of Industrial Textiles, 2016Co-Authors: Zhou Zhao, Weiren Bao, Youbo Di, Jinming DaiAbstract:A new flame-retardant protein Viscose fiber with safely wearing performance has been prepared through blending protein solution, flame retardant (hexaphenoxycyclotriphosphazene) and Viscose spinning solution, in which wool protein was used and added to spinning solution on the basis of 16% flame retardant, and the properties of the fiber were investigated. The product has more compact structure inside the fiber and evenly scattered small pores on the surface. Flame-retardant protein Viscose fiber can reach the flame-retardant standard both before and after 30 times wash test, and the mechanical strength of the fiber was also improved. The introduction of hexaphenoxycyclotriphosphazene lowered the primary decomposition temperature of Viscose fiber, reduced its weight loss. The flame-retardancy of the fiber can be improved by the introduction of protein. In thermal processes, the major product of thermal decomposition was CO2, no hazardous and noxious gases were released. Due to the introduction of protein,...
Ying Xu - One of the best experts on this subject based on the ideXlab platform.
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structure and thermal properties of bamboo Viscose tencel and conventional Viscose fiber
Journal of Thermal Analysis and Calorimetry, 2007Co-Authors: Ying Xu, Z Lu, R TangAbstract:Comparative investigations of new regenerated cellulosic fibers, bamboo Viscose fiber and Tencel, together with conventional Viscose fibers have been carried out to explain the similarity and difference in their molecular and fine structure. The analyses jointly using SEM, XRD and IR reveal that all the three fibers belong to cellulose II. Tencel consists of longer molecules and has a greater degree of crystallinity, while bamboo Viscose fiber has a lower degree of crystallinty. TG-DTG-DSC study shows three fibers resemble in thermal behavior with a two-step decomposition mode. The first step is associated to water desorption, suggesting that bamboo Viscose fiber holds better water retention and release ability, the second a depolymerization and decomposition of regenerated cellulose, indicating that Tencel is more thermally stable in this process than bamboo and conventional Viscose fiber.
Qingshan Kong - One of the best experts on this subject based on the ideXlab platform.
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pyrolysis products and thermal degradation mechanism of intrinsically flame retardant calcium alginate fibre
Polymer Degradation and Stability, 2011Co-Authors: Jianjun Zhang, Xiuhong Shen, Quan Ji, Qingshan KongAbstract:Intrinsically flame-retardant calcium alginate fibre was prepared by wet spinning and its pyrolysis products and thermal degradation mechanism studied. Combustion behaviour and flammability were assessed using the limiting oxygen index (LOI) and cone calorimetry. LOI results showed that calcium alginate fibre was intrinsically flame retardant with LOI value of 48.0, as compared to about 20.0 for Viscose fibre. Cone calorimetry indicated that heat release rate and total heat release values of intrinsically flame-retardant fibre were significantly less than those of Viscose fibre. It also shown that intrinsically flame-retardant fibre combustion produced greater quantities of residues than did Viscose fibre combustion. Combustion residues were examined using scanning electron microscopy, indicating that calcium alginate fibre produced consistent, thick residue crusts. Pyrolysis was investigated using pyrolysis–gas chromatography–mass spectrometry (Py–GC–MS) which showed that cracking products produced from calcium alginate fibres combustion were less than those in Viscose fibre combustion, and pyrolysis of the intrinsically flame-retardant fibre was incomplete. Thermogravimetric analysis (TG) indicated that calcium alginate fibre generated more residues containing carbonaceous char and calcium carbonate, as compared with Viscose fibre. We propose a condensed phase mechanism for the calcium alginate fibre flame-retardancy effect.
