The relationship between the chemical structure and thermal conversion temperatures of thermally rearranged (TR) polymers

被引：87

作者：

Calle, Mariola ^{[2
]}

Chan, Yishee ^{[1
]}

Jo, Hye Jin ^{[2
]}

Lee, Young Moo ^{[1
,2
]}

机构：

[1] Hanyang Univ, Sch Chem Engn, Seoul 133791, South Korea

[2] Hanyang Univ, WCU Dept Energy Engn, Seoul 133791, South Korea

来源：

POLYMER | 2012年 / 53卷 / 13期

基金：

新加坡国家研究基金会;

关键词：

Thermal conversion temperature; Glass transition temperature; Thermal rearrangement; AROMATIC POLY(ETHER BENZOXAZOLE)S; DICARBOXYLIC-ACID CHLORIDES; GAS SEPARATION; POLYIMIDES; POLYBENZOXAZOLES; TRANSPORT; MEMBRANES;

D O I：

10.1016/j.polymer.2012.04.032

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 [高分子化学与物理];

摘要：

An attempt was made to elucidate the relationship between chemical structure, in terms of glass transition temperature (T-g), and conversion temperature (T-TR) of thermally rearranged polybenzoxazole membranes, by analyzing DSC and TGA data for a total of 15 sets of o-hydroxypolyimides and copolyimides, derived from two experimental and four commercial structurally different diamines, as well as four different dianhydride monomers. Our research revealed that T-TR was influenced by chain ridigity of o-hydroxypolyimides, and exhibited a linear relationship with T-g. Therefore, structure and thermal property of o-hydroxypolyimide should be considered when studying TR polymers to determine thermal conversion to polybenzoxazole. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：2783 / 2791

页数：9

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