非水溶性丝素粉体与聚氨酯共混膜的性能  

Properties of blend films prepared by water-insoluble silk fibroin powder and medical polyurethane

作　　者：许海叶[1] 徐卫林[1] 刘秀英[2] 

机构地区：[1]武汉科技学院新型纺织材料绿色加工及其功能化教育部重点实验室,湖北武汉430073 [2]武汉理工大学材料工程与科学学院,湖北武汉430070

出　　处：《纺织学报》2008年第11期16-21,共6页Journal of Textile Research

基　　金：湖北省教育厅重大项目(Z200717001)

摘　　要：采用浸没沉淀相转化法制备非水溶性丝素粉体与医用聚氨酯共混膜。研究共混膜中非水溶性丝素粉体质量分数不同时共混膜的表面形貌、吸水性、透汽性、水接触角及力学性能和红外光谱图的变化。实验结果表明:随着非水溶性丝素粉体质量分数的增加,共混膜的表面形貌由致密逐渐变得疏松,并逐渐出现微孔,且粉体在共混膜中分布均匀并没有明显的团聚现象,这表明二者的相容性好;另外,共混膜的断裂伸长和拉伸模量较纯PU膜虽有不同程度下降,但其吸水性和透汽性逐渐得到提高;膜的水接触角逐渐下降,表明其亲水性逐步得到提高。Blend films of water-insoluble silk fibroin （SF） powder and medical polyurethane were produced by the method of immersion-precipitation phase transformation. These blend films with different powder contents were investigated on the change of their surface morphology, water absorption, water vapor permeability, water contact angle, mechanical properties and IR spectrums. The results showed that, with increasing of waterinsoluble silk fibroin powder content, blend films＇ surface changed gradually from dense to loose with emergence of microporous, meanwhile the silk fihroin powder was uniformly dispersed in the films without apparent agglomeration, which suggested that they had good compatibility with each other. In addition, elongation at break and modulus of the blend films decreased to certain extent when compared with pure PU films, but their water absorption and water vapor permeability were gradually raised with increasing of water- insoluble silk fibroin powder content; films＇ water contact angle declined, which suggested that their hydrophilicity was also gradually raised.

关 键 词：非水溶性丝素粉体 医用聚氨酯 共混膜 吸水性 透汽性 

分 类 号：TS102[轻工技术与工程—纺织工程]