等规聚丙烯在升温过程中取向行为变化的测定  

Determination of the Average Orientation of Oriented Isotactic Polypropylene upon Heating

作　　者：竺品芳[1] 朱娜[1] 

机构地区：[1]上海交通大学分析测试中心,上海200030

出　　处：《实验室研究与探索》2001年第6期58-58,61,共2页Research and Exploration In Laboratory

摘　　要：本文改进了传统的偏振红外光谱法 ,在线跟踪单轴拉伸等规聚丙烯的 973cm-1谱带在升温过程中的变化 。The change of the average orientation of oriented isotactic polypropylene upon heating is carefully studied by polarized infrared spectroscopy. It is found that for 973cm -1 the parallel IR absorbance decreases quickly at about 70℃, while the corresponding perpendicular one increases. This result indicates the disorientation of sample at 70℃.

关 键 词：傅立叶变换红外光谱 等规聚丙烯 平均取向 变化测定 升温过程 

分 类 号：O632.12[理学—高分子化学]