再生丝素/壳聚糖共混纳米纤维的结构与性能  

Microstructure and Property of Regenerated Silk Fibroin/chitosan Blended Nanofibers

作　　者：张幼珠[1] 尹桂波[1] 吴佳林[1] 常丽娜[1] 

机构地区：[1]苏州大学材料工程学院,江苏苏州215021

出　　处：《合成纤维》2006年第12期30-33,共4页Synthetic Fiber in China

基　　金：江苏省高校重点实验室开放研究项目(S81150033)。

摘　　要：以98%的甲酸为溶剂,不同质量分数的再生丝素溶液和3.5%的壳聚糖溶液以质量比70∶30共混静电纺丝。测定了壳聚糖的含量对共混膜的结构及力学、溶解等性能的影响。结果表明:随着壳聚糖相对含量的增加,丝素β化程度提高,纤维结晶度增大,丝素与壳聚糖以70∶30共混时的溶失率最小;甲醇处理后,溶失率明显降低;共混纳米纤维的断裂强度随着壳聚糖相对含量的增大而增加,柔软性也逐渐提高;共混纤维膜具有优异的抗菌性。The eleetrospinning of various concentrated regenerated silk fibrein （SF） solution and 3.5 % chitosan（CS） solution with the composition ratio 70：30 was performed using 98 % formic acid as spinning solvent. The influence of chitosan＇s relative content on blended membrane＇s mierostructure, mechanical property and the rate of water-dissolved was measured. The result indicated that with the relative content of ehitosan increased, the β-sheet and erystallinity of SF were enhanced. When the composition ratio was 70： 30, the rate of water-dissolved was least. After 60 rain treatment by methanol, the rate of water-dissolved decreased significantly. The breaking strength and pliability of blended membrane were increased gradually with the increased content of ehitosan. The eleetrospun SF/CS membrane had excellent antibacterial property.

关 键 词：再生丝素 壳聚糖 静电纺丝 微细结构 力学性能 抗菌性 

分 类 号：TQ340.7[化学工程—化纤工业]