Preparation and Properties of Poly(Amide-Imide) Containing Acetylene Units in the Main Chain

Author:

Takeichi Tsutomu1,Suefuji Kyoko,Zuo Min1

Affiliation:

1. School of Materials Science, Toyohashi University of Technology, Tempaku-cho, Toyohashi 441-8580, Japan

Abstract

Poly(amide-imide) containing internal acetylene units in the backbone was prepared from trimellitic anhydride chloride and bis(3-aminophenyl)acetylene in N-methyl-2-pyrrolidone at room temperature, followed by thermal imidization. Differential scanning calorimetry measurements of the poly(amide-imide) showed an exotherm due to the crosslinking reaction of the internal acetylene units. With higher heat treatment, the exotherm shifted to higher temperatures and the amount of the exotherm decreased. The exotherm finally disappeared after 400 °C treatment. Viscoelastic measurements revealed that the crosslinked polymer had a higher glass transition temperature and maintained a storage modulus up to higher temperatures. The thermogravimetric analyses profile showed that the crosslinking of internal acetylene units gave a thermally stable structure.

Publisher

SAGE Publications

Subject

Materials Chemistry,Organic Chemistry,Polymers and Plastics

Reference28 articles.

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2. [2] Cassidy P E 1980 Thermally Stable Polymers (New York: Dekker) pp 67–93

3. [3] Sekiguchi H and Coutin B 1992 Handbook of Polymer Synthesis ed H R Kricheldorf (New York: Dekker) pp 807–939

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