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

被引：0
|
作者：
Liu Mi-mi [1 ]
Wei Fa-yun [1 ]
Zhang Yu [1 ]
机构：
[1] Donghua Univ, Coll Mat Sci & Engn, State Key Lab Modificat Chem Fiber & Polymer Mat, Shanghai 201620, Peoples R China
来源：
2010 INTERNATIONAL FORUM ON BIOMEDICAL TEXTILE MATERIALS, PROCEEDINGS | 2010年
关键词：
poly (lactic acid); blend; toughness; SEBS-MAH;
D O I：
暂无
中图分类号：
R318 [生物医学工程];
学科分类号：
0831 ;
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 SEES. It means the maleic anhydride improves the interface properties between PLA and SEBS. We also used scanning electron microscope to prove the phenomena.
引用
收藏
页码：39 / 42
页数：4
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