生物可降解聚乳酸/Ecoflex共混薄膜拉伸性能研究  

The Tension Properties of Biodegradable PLA/Ecoflex Blend Film

作　　者：袁华[1] 杨军伟[1] 张乃文[1] 任杰[1] 

机构地区：[1]同济大学材料科学与工程学院纳米与生物材料研究所,上海200092

出　　处：《塑料》2008年第6期48-50,共3页Plastics

基　　金：世博会科技专项(2004BA908B04)

摘　　要：对3种不同的聚乳酸/Ecoflex共混薄膜横向、纵向拉伸强度和断裂伸长率进行了对比分析,并研究了薄膜拉伸性能的影响因素。实验结果表明:聚乳酸(PLA)与Ecoflex的相容性越好,薄膜拉伸性能越好;薄膜纵向拉伸强度和断裂伸长率大于横向拉伸强度和断裂伸长率;加载速率对薄膜拉伸强度和断裂伸长率没有显著影响。The tension strength and elongation at break of three different PLA/Ecoflex blend films in longitudinal and landscape orientation were analyzed comparatively. The factors which influence the tension properties of the films were studied also. The results showed that the tension properties of the films became better while the compatibility of PLA and Ecoflex showed better. It could be found that the tension strength and the elongation at break in longitudinal orientation were bigger than in landscape orientation, while the loading rate had no notable affection on the tensile strength and elongation at break.

关 键 词：聚乳酸/Ecoflex共混薄膜 相容性 加载速率 拉伸强度 断裂伸长率 

分 类 号：TQ321[化学工程—合成树脂塑料工业]