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Structure and Preparation of Chitosan/Poly(vinyl alcohol) Blend Fibers

ZHENG Hua, DU Yu\|min, YU Jian\|hui (College of Chemistry and Environment Science, Wuhan University, Wuhan 430072, China)  
The chitosan/poly (vinyl alcohol) blend fibers were prepared by wet\|spining, and characterized by FT\|IR, X\|ray diffraction, SEM and measurements of mechanical properties and water\|retention properties. The results indicated that good compatibility existed between chitosan and poly (vinyl alcohol) molecule in the blend fibers, a the water\|retention properties and mechanical properties of the blend fibers increase with the increase of PVA content in the blends and the mechanical strength of the blends is also related to PVA content and the degree of deacetylation of chitosan. The best mechanical strength values of the blend fibers are 1.82 cN/d (dry state) and 0.81 cN/d (wet state) were obtained when PVA content was 20% and the degree of deacetylation of chitosan in 92.2%, respectively. The water\|retention values of the blend fibers were between 170% and 241%, obviously higher than pure chitosan fiber (120%).
【Fund】: 国家自然科学基金资助项目!( 2 99770 14 );; 中金集团资助项目
【CateGory Index】: R318.08
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