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℃.
出处
《实验室研究与探索》
CAS
2001年第6期58-58,61,共2页
Research and Exploration In Laboratory
