乙烯-丙烯共聚物磺酸盐离聚物的研究——Ⅰ.乙烯-丙烯共聚物及其氯磺化反应

STUDY ON IONOMERS OF SULFONATED ETHYLENE- PROPYLENE COPOLYMERS I. ETHYLENE-PROPYLENE COPOLYMERS AND THEIR CHLOROSULFONATION

本文用钛系高效催化剂合成了四种乙烯-丙烯共聚物,测定了共聚物的单体组成、序列结构分布、分子量和结晶度.在考察了引发剂和氯磺化试剂对氯磺化反应影响的基础上,制备了不同磺化度的氯磺化乙丙共聚物,并用^(13)C-NMR分析其化学结构,表明共聚物分子链上CH没有发生反应,CH_3只被-SO_2Cl取代,而CH_2可被-SO_2Cl或-Cl取代.

The ethylene-propylene copolymers with various monomer ratio have been synthesized by using titanium catalyst. The composition, monomer sequence distribution, molecular weight and crystallinity for the copolymers were determined. The side group-SO2Cl was introduced to ethylene-propylene backbones through chlorosulfonation with SO2Cl2. Effects pf initiator and sulfuryl chloride agent on sulfonation in chlorosulfonated products were investigated. Structural analysis of the chlorosulfonated copolymer by 13C-NMR has shown that hydrogens on CH3 could be substituted by a - SO2CI group while those on CH2 substituted by either - SO2CI or - Cl group, but those on CH substituted by neither pendant groups.