间规立构聚丙烯的结晶度研究  

On the Crystallinity of Syndiotactic Polypropylene

作　　者：于英宁[1] 张宏放[1] 莫志深[1] 陈伟[2] 孙春燕 

机构地区：[1]中国科学院长春应用化学研究所高分子物理开放实验室 [2]中国石油化工总公司

出　　处：《应用化学》1998年第6期77-79,共3页Chinese Journal of Applied Chemistry

摘　　要：Ｎａｔａ等用Ｚｉｅｇｌｅｒ－Ｎａｔａ催化剂首次合成了间规度为～５０％间规聚丙烯，并对其进行了表征，指出其具有（ＴＴＧＧ）２螺旋构象，正交晶系，Ｃ２２２１空间群［１，２］．近年来用茂金属催化剂合成的间规立构聚丙烯（ｓＰＰ）的间规度可达９３％以上，高间规...A formula for calculating the crystallinity of syndiotactic polypropylene samples synthesized by metallocene catalyst with constant syndiotacticity has been derived on the basis of WAXD intensity and the graphic resolution method. The calculated by this formula values have been compared with those obtained by DSC and density measurements. They all give a maximum value at Tc(95 ) of the polymer, while the calculated values are more or less higher.

关 键 词：间规立构 聚丙烯 结晶度 DSC 密度 WAXD 

分 类 号：O632.12[理学—高分子化学]