Poly(Arylene Ether)s with Pendant Ethynyl Groups |
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Authors: | B. J. Jensen P. M. Hergenrother Godson Nwokogu |
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Affiliation: | 1. NASA Langley Research Center , Hampton, Virginia, 23681-0001;2. Hampton University , Hampton, Virginia, 23668 |
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Abstract: | Abstract Three novel bisphenols containing pendant ethynyl, hexynyl, and phenylethynyl groups were synthesized and used to prepare arylene ether polymers and copolymers. When heated to 250–350°C, the ethynyl groups react. After curing, the homopolymers were brittle due to the high crosslink density. Copolymers prepared using either 10 or 30 mol% of the ethynyl-containing bisphenol and either 90 or 70 mol% of the bisphenol with no ethynyl groups were relatively tough and formed creasible films. After a thermal cure, the copolymers became insoluble and exhibited high T gs and good thin film tensile properties. |
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