摘要
研究了低等规度聚丙烯 (L IPP)固相接枝马来酸酐 (MAH)。红外谱图证实了 MAH成功地接枝在LIPP链上。用化学滴定法测定了接枝物的接枝率 ,考察了接枝率与单体 ,引发剂和时间的关系。另外将LIPP按等规度进行分级 ,用 NMR对每个级份进行了表征。最后将接枝物也分级 ,测定了每个级份的接枝率 。
Solid phase grafting onto low isotactic polypropylene (LIPP) was studied in this paper. The success of being grafted was proved by using FT-IR spectrums. The grafting ratio of each sample was accurately measured by titration. The relationships between grafting ratios and monomer, initiator, and time were investigated. Then LIPP was fractionlized by tacticity and each fraction was characterized by NMR. LIPP-g-MAH is also fractionlized and grafting ratio of each fraction was measured. The effect of tacticity on grafting ratio was then discussed.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2003年第4期72-74,共3页
Polymer Materials Science & Engineering
