Preparation and properties of keratin-poly(vinyl alcohol) blend fiber
Preparation and properties of keratin-poly(vinyl alcohol) blend fiber
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DOI：
10.1002/app.13236
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发表时间：
2004-01-15
影响因子：
3
通讯作者：
Yamauchi, K
中科院分区：
文献类型：
--
作者：
Katoh, K;Shibayama, M;Yamauchi, K
采用湿法纺丝技术制备了含13- 46wt%-SSO_3-Na ~+（S-磺基）角蛋白的角蛋白-聚乙烯醇（PVA）共混纤维。它们通过在硫酸钠饱和溶液的凝固浴中使S-磺基角蛋白和PVA（纺丝原液）的水溶液脱水并随后拉伸而形成。角蛋白-PVA纤维表现出比羊毛更高的韧性，这可能源于PVA组分的高机械强度。在约200 ℃下的热处理比PVA纤维更显著地改善了角蛋白-PVA纤维的防水特性，例如收缩。也就是说，在195 ℃下热处理10分钟后，角蛋白-PVA共混纤维在60 ℃的水中收缩20%，而PVA纤维收缩56%。差热分析表明，交联角蛋白分子之间的二硫键在热处理过程中，而PVA组分的额外的结晶没有观察到。研究了角蛋白-PVA纤维对重金属和有毒气体的吸附性能。角蛋白-PVA纤维对Ag+和甲醛气体的吸附效果优于PVA纤维。因此，角蛋白和PVA的共混物对于两种聚合物纤维都是有利的。(C)2003 Wiley Periodicals，Inc.
Keratin-poly(vinyl alcohol) (PVA) blend fibers containing 13-46 wt % of -SSO3-Na+ (S-sulfo) keratin were prepared by the wet-spinning technique. They were formed by dehydration of an aqueous solution of S-sulfo keratin and PVA (spinning dope) in a coagulation bath of sodium sulfate-saturated solution and subsequently drawn. Keratin-PVA fibers showed higher tenacity than that of wool, presumably originating from the high mechanical strength of the PVA component. The heat treatment at about 200degreesC improved the waterproof characteristics such as shrinkage of keratin-PVA fibers more conspicuously than did PVA fibers. That is, after heat treatment at 195degreesC for 10 min, keratin-PVA blend fiber shrank 20% in water at 60degreesC, whereas PVA fiber shrank 56%. Differential thermal analysis suggested the crosslinking of disulfide bonds between keratin molecules during the heat treatment, whereas the additional crystallization of PVA component was not observed. Adsorption of heavy metal and toxic gas to keratin-PVA fibers was also investigated. Keratin-PVA fiber was found to adsorb Ag+ and formaldehyde gas more efficiently than PVA. Thus, blends of keratin and PVA were advantageous for both polymer fibers. (C) 2003 Wiley Periodicals, Inc.