PHOTOINITIATED CATIONIC BULK-POLYMERIZATION OF MESOGENIC VINYL ETHERS

被引：23

作者：

JONSSON, H ^{[1
]}

ANDERSSON, H ^{[1
]}

SUNDELL, PE ^{[1
]}

GEDDE, UW ^{[1
]}

HULT, A ^{[1
]}

机构：

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

来源：

POLYMER BULLETIN | 1991年 / 25卷 / 06期

关键词：

D O I：

10.1007/BF01032659

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Mesogenic vinyl ethers have been bulk polymerized cationically in the liquid crystalline phase, using onium salt redox systems for photochemical initiation. High molecular mass polymers (M(n) less-than-or-equal-to 41 000) with a narrow molecular mass distribution (around 2) were obtained at high temperatures (less-than-or-equal-to 80-degrees-C). Apparently the polymerization system stabilizes the propagating cation and thus reduces the tendency for chain transfer to occur. Highly ordered thin (30-50-mu-m) films were produced by the polymerization of monomers oriented in their nematic phase. Despite the fact that they were in the S(A) phase, the films were completely transparent.

引用

页码：641 / 648

页数：8