Optical activity of poly-l-lactic acid
Optical activity of poly-l-lactic acid
复制标题
聚-L-乳酸的光学活性
DOI：
10.1080/00150199008211436
复制
发表时间：
1990
期刊：
影响因子：
0.8
通讯作者：
E. Fukada
中科院分区：
文献类型：
--
作者：
T. Asahi;H. Fukase;M. Ichiki;J. Kobayashi;E. Fukada
首次同时测量了聚L-乳酸(PLLA)的光学活性和双折射，这是一种著名的压电可生物降解聚合物。PLLA薄膜的光学回转在高温区和低温区表现出不同的温度依赖关系，并且在低温区发生了变化。这些事实表明，在较低温度下，PLLA将发生构象变化。
Abstract Simultaneous measurements of optical activity and birefringence have been made for the first time on poly-L-lactic acid (PLLA), which is a well-known piezoelectric and biodegradable polymer. Optical gyration of PLLA films, one stretched 2.5 times the other 6 times as long as the original ones, displayed different temperature dependence in the higher and lower temperature regions and changed the sign in the lower one. These facts suggest a conformational change to take place in PLLA at some temperature in the lower one.