Synthesis and characterization of poly(amide imides) containing benzimidazole-rings |
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Authors: | Im Sik Chung Sang Youl Kim |
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Affiliation: | (1) Department of Chemistry, Korea Advanced Institute of Science and Technology, 373-1, Kusung-Dong, Yusung-Gu, Tae-jon 305-701, Korea, KR |
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Abstract: | New poly(amide imides) were prepared from benzimidazole-ring containing diamine via one-pot synthetic method. The diamine
monomer, 6,4′-diamino-2-phenylbenzimidazole, was prepared from 4-nitrobenzoyl chloride and 4-nitro-1,2-phenylenediamine with
3 steps. It was found that the degree of imidization of the poly(amide imides) containing benzimidazole-ring can be controlled
by monomer composition and solution imidization conditions. All partially imidized poly(amide imides) were soluble in polar
aprotic solvent, but became insoluble in any organic solvents after thermal curing. The thermal stability of the poly(amide
imides) increased as the polymers contain more benzimidazole units.
Received: 6 March 1997/Accepted 2 April 1997 |
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