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Plant Polyphenol and Viscose Cellulose Blending for Forming Fiber and Performance Research

Author: WuDaWei
Tutor: YuHuSheng
School: Qingdao University
Course: Textile Engineering
Keywords: Plant polyphenols Viscose spinning solution Rheological Blends Fiber Antibacterial Performance
CLC: TQ340.1
Type: Master's thesis
Year: 2008
Downloads: 37
Quote: 0
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Abstract

With the continuous improvement of living standards, people are increasingly high requirements for textiles. With good functionality, comfort and because green textiles are increasingly favored by people. Ordinary viscose fiber textiles loved by the people for its good wearability. The viscose fiber textiles with antibacterial function will certainly be welcomed by the people. Therefore, the study of novel antibacterial viscose fiber is important. This article has natural antibacterial properties of plant polyphenols solution added to the viscose cellulose spinning solution, so that the two blending spinning - cellulose antibacterial viscose fiber with antibacterial function of plant polyphenols. First clear the structure of the plant extract is a polyhydroxy phenolic the phenolic antibacterial properties, may form intermolecular hydrogen bond between the phenolic structures in the hydroxyl group with a hydroxyl group of cellulose, to enhance the compatibility between the two provide a possibility. Screening the best solubility in water of plant polyphenol. Plant polyphenols - Rheological properties of cellulose blend solution is then tested, and film-forming properties of the blend solution have been investigated. The test results show that with the increased the plant polyphenol content in the solution, at the same shear rate, shear stress increases with the the plant polyphenol content in the spinning solution increases; same plant polyphenol content, as the temperature increases, the viscosity of the system decreases. Pure cellulose film plant polyphenols - the state of the surface of the cellulose blend films did not change much, both very good compatibility, no phase separation occurs; membrane-like strength are in the same order of magnitude, experiments show that has increased the added plant polyphenol blend membrane strength than pure cellulose film, and a downward trend with the the plant polyphenol content increase its strength; elongation at break of the membrane-like with plant polyphenols the increase in a downward trend, and plant polyphenols - the breaking elongation of the cellulose film were less than pure cellulose film; blend film swelling rate becomes larger, indicating that the deterioration of the dimensional stability of the film, but with the plants more phenol content increases, the swelling ratio show a downward trend. Plant polyphenols - the inhibitory effect of the cellulose blend films significantly better with the increase in plant polyphenol content. Second antimicrobial viscose fiber and viscose fiber properties of plant polyphenols - cellulose shows two kinds of fibers are surface trench, and plant polyphenols - cellulose antibacterial viscose fiber and viscose fiber compared , trench lighter, the cross-sectional shape also proved this point. Description of plant polyphenols added cross-section of the fiber tends to be smooth. Can also be seen from the electron micrographs of plant polyphenols - plant polyphenols with cellulose and cellulose antibacterial viscose fiber phase separation occurs. With the addition of plant polyphenols, plant polyphenols - cellulose antibacterial viscose fiber structure and mechanical properties of supramolecular certain changes, compared with ordinary viscose fiber, the degree of crystallinity larger degree of orientation change modulus, breaking strength, elongation at break decreases. Plant polyphenols - cellulose antibacterial viscose fiber antibacterial performance test, the the bacteriostatic rate of Staphylococcus aureus in more than 26%, in line with the requirements of the antibacterial fiber. Made use of plant polyphenols - cellulose antibacterial viscose fiber processing the textiles also has good antibacterial properties. The plant polyphenol - cellulose antibacterial viscose fiber performance reached the level of ordinary viscose fiber state regulations. Finally, summed up the plant polyphenol - cellulose antibacterial viscose fiber fiber-forming mechanism and the performance, and put forward recommendations for further study of the fiber direction, prospects broad prospects for development of this type of fiber.

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