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Quinoxaline/phenylquinoxaline copolymers
Author(s) -
Hergenrother P. M.
Publication year - 1977
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1977.070210813
Subject(s) - quinoxaline , differential scanning calorimetry , copolymer , moiety , polymer chemistry , polymer , monomer , materials science , chemistry , organic chemistry , composite material , physics , thermodynamics
The thermal crosslinkability of the quinoxaline moiety incorporated within poly(phenylquinoxalines) was demonstrated by differential scanning calorimetry (DSC), torsional braid analysis (TBA), and high‐temperature adhesive evaluation. Several homopolymers, random copolymers, and polymer blends were prepared and evaluated. A new bis(1,2‐dicarbonyl) monomer, 4‐(4‐phenylglyoxalylphenoxy)phenylglyoxal hydrate, was prepared and reacted with 3,3′, 4,4′‐tetraaminobiphenyl to provide a polymer where a phenyl group was located on alternating quinoxaline rings. The apparent T g of this polymer was initially 280°C and increased to 360°C after exposure to 400°C for 0.5 hr in air.