CATIONIC BULK-POLYMERIZATION OF MESOGENIC VINYL ETHERS INDUCED BY THERMAL-DECOMPOSITION OF SULFONIUM SALTS

被引：20

作者：

JONSSON, H

SUNDELL, PE

PERCEC, V

GEDDE, UW

HULT, A

机构：

[1] ROYAL INST TECHNOL,DEPT POLYMER TECHNOL,S-10044 STOCKHOLM 70,SWEDEN

[2] CASE WESTERN RESERVE UNIV,DEPT MACROMOLEC SCI,CLEVELAND,OH 44106

来源：

POLYMER BULLETIN | 1991年 / 25卷 / 06期

关键词：

D O I：

10.1007/BF01032660

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Liquid crystalline vinyl ethers have been bulk polymerized cationically in the mesophase using onium salts for thermal initiation. High molecular mass polymers (M(n) less-than-or-equal-to 83 000) with a narrow molecular mass distribution (around 2) were produced at very high temperatures (less-than-or-equal-to 120-degrees-C). Apparently the polymerization system stabilizes the propagating cation and thus reduces chain transfer reactions that are determining the molecular mass. Possible reasons for this stabilization are e.g. influence of the mesophase of the formed polymer, interfacial polymerization, and nucleophilic stabilization by nucleophiles present in the monomer or produced by the initiators.

引用

页码：649 / 656

页数：8

共 19 条

[1] LIVING CATIONIC POLYMERIZATION OF VINYL MONOMERS BY ORGANO-ALUMINUM HALIDES .3. LIVING POLYMERIZATION OF ISOBUTYL VINYL ETHER BY ETALCL2 IN THE PRESENCE OF ESTER ADDITIVES [J].