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Imide-Aryl Ether Ketone Block Copolymers

Published online by Cambridge University Press:  15 February 2011

J. L. Hedrick ,
W. Volksen  and
D. K. Moiianty
J. L. Hedrick
Affiliation:
IBM Research Division, Almaden Research Center, 650 1 Harry Road, San Jose, California 95120–6099
W. Volksen
Affiliation:
IBM Research Division, Almaden Research Center, 650 1 Harry Road, San Jose, California 95120–6099
D. K. Moiianty
Affiliation:
Department of Chemistry and Center, for Applications in Polymer Science, Central Michigan University, Mount Pleasant, Michigan 48859
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Abstract

Imide-aryl ether ketone block copolymers were prepared and their morphology and thermal and mechanical properties investigated. The key feature of this copolymerization is the preparation of soluble aryl ether ketimine oliogmers which may be subsequently hydrolized to the aryl ether ether ketone form. A bis(amino) aryl ether ketimine oligomer was prepared via a nucleophilic aromatic substitution reaction with a molecular weight of 6,000 g/mol. The oligomer was co-reacted with 4,4′-oxydianiline (OI)A) and pyromellitic dianhydride (PMDA) diethyl ester diacyl chloride in N-methyl-2-pyrrolidone (NMP) in the presence of N-methylmorpholine. The copolymer compositions, determined by II-NMR, of the resulting amic ester based copolymers ranged from 8 to 20 wt% aryl ether ketimine content. Prior to imide formation, the ketimine moiety of the aryl ether ketimine block was hydrolyzed (p-toluene sulfonic acid) to the ketone form producing the aryl ether ether ketone block. Solutions of the copolymers were cast and cured to effect imidization, producing clear films. The copolymers displayed good thermal stability with decomposition temperatures in excess of 450°C. Multiphase morphologies were observed irrespective of the co-block type or composition.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 227: Symposium J – Materials Science of High Temperature Polymers for Microelectronics , 1991 , 81
Copyright
Copyright © Materials Research Society 1991

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