甲壳素/海藻酸钠共混纤维的制备及性能

甲壳素/海藻酸钠共混纤维的制备及性能 Preparation and Properties of Chitin/Sodium Alginate Blend Fiber 胡先文 HU Xianwen1 1 2 first-author 杜予民 DU Yumin1 1 李国祥 LI Guoxiang1 1 王群 WANG Qun1 1 武汉大学资源与环境科学学院 武汉大学资源与环境科学学院 School of Resource and Environmental Science,Wuhan University School of Resource and Environmental Science,Wuhan University 华中农业大学理学院 华中农业大学理学院 College of Science,Huazhong Agricultural University College of Science,Huazhong Agricultural University 以NaOH/CO（NH2）2水相溶剂溶解甲壳素,研究了凝固液对甲壳素/海藻酸钠纤维制备的影响,分析了纤维组分的相容性,并对纤维的性能进行了测定.结果表明:甲壳素纺丝的适宜凝固液为10%H2SO4,5%Na2SO4和5%C2H5OH混合液,甲壳素/海藻酸钠共混纺丝的适宜凝固液为5%CaCl2,1%HCl和10%C2H5OH混合液.结构分析说明,甲壳素与海藻酸钠共混有一定的相容性.当共混纤维中甲壳素含量为10%时,共混纤维干、湿态抗张强度及断裂伸长率最大,干、湿态抗张强度分别为11.99 cN/tex和2.47 cN/tex.当共混纤维中甲壳素含量为40%时,共混纤维吸湿率、保湿率分别达到最大值274.1%,37.8%. Chitin/sodium alginate blend fibers were prepared via wet spinning by using NaOH/CO（NH2）2 aqueous solution as solvent.The effect of the composition coagulator was studied by investigating the mechanical properties.The results show that the mixed solution containing 10% H2SO4,5% Na2SO4 and 5% C2H5OH is a proper coagulator for chitin fiber,as well as the mixed solution containing 5% CaCl2,1% HCl and 10% C2H5OH is a proper coagulator for chitin/sodium alginate blend fiber.The structure analysis indicates that there is a strong interaction and a certain level of miscibility between chitin and sodium alginate molecules.The best values of the tensile strength of blend fibers,11.99 cN/tex in dry state and 2.47 cN/tex in wet state respectively,were obtained when chitin weight content was 10%.The breaking elongations in both dry and wet state get the best value when chitin weight content was 10%.The best values of the ratios of moisture Absorption and moisture retention of blend fibers were 274.1% and 37.8% when chitin weight content was 40%. 甲壳素 海藻酸钠 共混纤维 制备 Chitin sodium alginate blend fiber preparation TQ340.1 国家重点实验室开放课题基金资助（0708） 2008-06-01 2021-04-01 6 54