纺织学报 ›› 2010, Vol. 31 ›› Issue (8): 1-5.

• 纤维材料 •    下一篇

壳聚糖纺丝原液性能及其湿法纺丝工艺

张红1,张雯佳,赵国樑2   

  1. 1. 北京服装学院材料科学与工程学院2. 北京服装学院
  • 收稿日期:2009-08-24 修回日期:2010-04-09 出版日期:2010-08-15 发布日期:2010-08-15
  • 通讯作者: 赵国樑

Study on chitosan spinning dope and its wet-spinning process

  • Received:2009-08-24 Revised:2010-04-09 Online:2010-08-15 Published:2010-08-15

摘要: 研究乙酸浓度、温度、浓度对壳聚糖纺丝原液性质的影响,并进一步探索制备壳聚糖初生纤维的湿法纺丝成形工艺。研究表明:高脱乙酰度的壳聚糖更容易溶解于乙酸中,得到的壳聚糖初生纤维的结晶度高;配置壳聚糖纺丝原液时乙酸浓度不易过高,以2%为宜,温度控制在30~50℃;纺丝所用凝固浴为5%NaOH,在凝固浴中加入适量乙醇以及Na2SO4,纤维成丝质量良好,凝固浴温度应控制在20~30℃;适当延长凝固时间,增大卷绕速度,可得到高取向、高强度的壳聚糖初生纤维。

Abstract: The influences of acid concentration, temperature, and chitosan concentration on properties of chitosan spinning dope were studied, and the wet-spinning process of preparing chitosan nascent fiber were further discussed. The results show that chitosan of high degree of deacetylation is more easily dissolved in acetic acid and increases crystallization of chitosan nascent fibers. When preparing chitosan spinning dope, the concentration of acetic acid is at 2%(mol) and the temperature changes between 30 ℃ and 50℃. In the process of spinning, the coagulation bath consists of 5% NaOH and 95% water,and the efficiency of fiber formation and uniformity are improved by adding ethanol and Na2SO4 in it. The temperature of coagulation bath varies from 20 ℃ to 30 ℃. By prolonging the coagulation time and increasing wind-up speed, highly oriented and high-strength chitosan nascent fibers are obtained.

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