期刊
EUROPEAN POLYMER JOURNAL
卷 41, 期 3, 页码 511-517出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.eurpolymj.2004.10.011
关键词
poly(amide-imide)s; 2,4-diaminotriphenylamine; diimide-diacid; triphenyl phosphite; thermally stable polymers
A new dicarboxylic acid, 2,4-bis(N-trimellitoyl)triphenylamine, bearing two preformed imide rings was synthesized from the condensation of 2,4-diaminotriphenylamine and trimellitic anhydride at 1:2 molar ratio. A series of poly(amide-imide)s (PAIs) with inherent viscosities of 0.38-0.66dl/g were prepared by triphenyl phosphite-activated polycondensation from the diimide-dicarboxylic acid with various aromatic diamines. All the resulting PAIs were readily soluble in a variety of organic solvents and formed strong and tough films via solution casting. These PAIs have useful levels of thermal stability associated with moderately high glass-transition temperatures (259-314degreesC) and 10% weight loss temperatures in excess of 530degreesC in nitrogen or in air. (C) 2004 Elsevier Ltd. All rights reserved.
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