Preparation of chitosan filament applying new coagulation system
Preparation of chitosan filament applying new coagulation system
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DOI：
10.1016/j.carbpol.2004.02.003
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发表时间：
2004-06
影响因子：
11.2
通讯作者：
H. Tamura;Yukihiko Tsuruta;K. Itoyama;Wannasiri Worakitkanchanakul;R. Rujiravanit;S. Tokura
中科院分区：
文献类型：
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作者：
H. Tamura;Yukihiko Tsuruta;K. Itoyama;Wannasiri Worakitkanchanakul;R. Rujiravanit;S. Tokura
发现了一种新的壳聚糖混凝体系，即氯化钙或乙酸乙醇水溶液，并成功地应用于壳聚糖长丝的纺丝。傅里叶变换红外光谱和原子吸收分光光度实验表明，钙与壳聚糖分子氨基的螯合作用可诱导壳聚糖絮凝。由于壳聚糖以醋酸盐的形式存在，原纺丝可溶于水。在几种处理中，稀释的氢氧化钠水溶液去除醋酸盐和钙离子。得到的长丝具有优良的性能。目前的混凝系统本质上是温和和安全的，与传统的基于铜铵或黄药的危险系统相比具有优势。
A new coagulation system for chitosan, aqueous alcohol solution of calcium chloride or acetate, was found and successfully applied for spinning of chitosan filament. FT-IR and atomic absorption spectrophotometric experiments indicated that chitosan coagulation was induced through calcium chelation with amino group of chitosan molecule. The original spun filament was soluble in water because chitosan exists as an acetic acid salt form. Among several treatments, diluted sodium hydroxide aqueous solution eliminated acetate as well as calcium ion. Obtained filament showed excellent properties. The present coagulation system, essentially a mild and safe has an advantage over the conventional hazardous system which were based on the copper ammonium or xanthate systems.