INITIATION OF CATIONIC POLYMERIZATION VIA OXIDATION OF FREE-RADICALS USING PYRIDINIUM SALTS

被引：82

作者：

BOTTCHER, A

HASEBE, K

HIZAL, G

YAGCI, Y

STELLBERG, P

SCHNABEL, W

机构：

[1] HAHN MEITNER INST KERNFORSCH BERLIN GMBH, BEREICH GLIENICKER STR 100, W-1000 BERLIN 39, GERMANY

[2] BASF AG, W-6700 LUDWIGSHAFEN, GERMANY

[3] HOKKAIDO UNIV, FAC SCI, DEPT CHEM, SAPPORO, HOKKAIDO 060, JAPAN

[4] ISTANBUL TECH UNIV, DEPT CHEM, ISTANBUL 80626, TURKEY

来源：

POLYMER | 1991年 / 32卷 / 12期

关键词：

PYRIDINIUM SALTS; PHOTOINITIATED CATIONIC POLYMERIZATION; OXIDATION OF RADICALS;

D O I：

10.1016/0032-3861(91)90061-M

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Pyridinium ions of appropriate reduction potential E1/2red are capable of oxidizing carbon-centred free radicals to carbocations that can initiate the polymerization of various compounds. 1-Ethoxy-2-methyl pyridinium ions of E1/2red = -0.7 V were found to react with free radicals generated by (a) photolysis or (b) thermolysis of various compounds. Radical generation was achieved in case (a) with benzoinmethylether, diphenyl-2,4,6-trimethylbenzoylphosphine oxide or benzophenone/tetrahydrofuran (BP/THF) and in case (b) with phenylazotriphenylmethane, BP/THF, benzoylperoxide/THF or 2,2-azobisisobutyronitrile/THF. The following monomers were polymerized: 1,2-epoxycyclohexane (cyclohexene oxide) and n-butylvinyl ether.

引用

页码：2289 / 2293

页数：5

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