Polyimide-polydimethylsiloxane copolymers containing nitrile groups

被引：35

作者：

Hamciuc, Elena ^{[1
]}

Hamciuc, Corneliu ^{[1
]}

Cazacu, Maria ^{[1
]}

Ignat, Mircea ^{[2
]}

Zarnescu, George ^{[2
]}

机构：

[1] Petru Poni Inst Macromol Chem, Iasi 700487, Romania

[2] Natl Inst Res & Dev Elect Engn, ICPE CA, Bucharest 030138, Romania

来源：

EUROPEAN POLYMER JOURNAL | 2009年 / 45卷 / 01期

关键词：

Polyimide-polydimethylsiloxane copolymers; Nitrile groups; Good solubility; Thin films; Thermal stability; PIEZOELECTRIC POLYIMIDES; SEGMENTED COPOLYMERS; SOLUBLE POLYIMIDES; POLY(ETHER IMIDE)S; STRUCTURE-PROPERTY; RESIN; DIANHYDRIDE; IMIDIZATION; POLYMERS;

D O I：

10.1016/j.eurpolymj.2008.10.028

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A novel series of nitrile-containing polyimide-polydimethylsiloxane copolymers was prepared by polycondensation reaction of 4,4'-oxydiphthalic anhydride with a mixture of an aromatic diamine, namely 2,6-bis(3-aminophenoxy)benzonitrile, and bis(aminopropyl)oligodimethylsiloxane of controlled molecular weight, in different ratios. The polymers were easily soluble in polar organic solvents, such as N-methylpyrrolidone, N,N-dimethylformamide as well as in less polar solvents such as chloroform, and can be cast from solution into thin flexible films. The inherent viscosity was in the range of 0.43-0.55 dL/g. The polymers showed good thermal stability, the decomposition temperature being above 430 degrees C. They exhibited a glass transition temperature in the range of 149-219 degrees C, with reasonable interval between glass transition temperature and decomposition temperature. The surface morphology was investigated by scanning electron microscopy. The water dynamic contact angles were measured by tensiometric method. The free surface energy was evaluated based on Owens and Wendt equation. A composite film based on a polyimide-polydimethylsiloxane copolymer and pyrite ash powder has been prepared and its nanoactuation has been investigated. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：182 / 190

页数：9

共 40 条

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