均相催化剂制备的乙丙共聚物的组成均匀性研究

STUDY ON COMPOSITIONAL HETEROGENEITY OF ETHYLENE PROPYLENE COPOLYMER PRODUCED BY HOMOGENEOUS CATALYST

均相催化剂制备的乙丙共聚物的组成均匀性研究徐君庭范志强王齐封麟先（浙江大学高分子科学与工程学系杭州３１００２７）关键词均相催化剂，乙丙共聚物，组成均匀性在高聚物的制备过程中，由于多种活性中心的存在、活性中心随时间的变化及聚合条件的波动等因素使得...

Intermolecular compositional heterogeneity of ethylene propylene random copolymer produced by homogeneous catalyst was investigated by using fractionation, 13 C NMR and GPC techniques.Combining with degradation,intramolecular compositional heterogeneity was also examined.It was found that in our sample intermolecular compositional heterogeneity existed to some extent,intramolecular compositional heterogeneity was negligible in this copolymer.