Preparation and Characterization of Poly (lactic acid) Toughened by SEBS-MAH

摘要：

Polylatic acid (PLA) is used in biology widely, such as suture, medical carrier and bone immobilizing material. But the toughness of PLA is poor. In this article, we used styrene-ethylene-butylene-styrene grafted by maleic anhydride (SEBS MAH) to improve the toughness of PLA. Mechanical properties of the blends were tested with different SEBS-MAH contents. The tensile strength decreased with the SEBS-MAH contents increasing, but the elongation at break increased significantly. The tensile strength of the blends with SEBS-MAH was higher than the blends with SEBS. Based on the thermogravimetic analysis, we found the degradation temperatures of the blends with SEBS-MAH were higher than the blends with SEBS. It means the maleic anhydride improves the interface properties between PLA and SEBS. We also used scanning electron microscope to prove the phenomena.

关键词： poly (lactic acid) blend toughness SEBS-MAH

作者: LIU Mi-mi WEI Fa-yun ZHANG Yu

作者单位: State Key Laboratory for Modification of Chemical Fiber and Polymeric Materials, College of Material Science and Engineering, Donghua University, Shanghai, 201620, P.R. China

会议类型: 国际会议

会议名称: 2010 International Forum on Biomedical Textile Materials(2010国际纺织生物医用论坛)

会议地点: 上海

会议语种:英文

页码: 39-42

在线出版日期: 2010-05-28（万方平台首次上网日期，不代表论文的发表时间）