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Preparation and characterization of fluorine‐containing aromatic condensation polymers, 5 . Aromatic polybenzimidazoles from 4,4′‐(hexafluoroisopropylidene)dibenzoic acid and aromatic tetramine tetrahydrochlorides
Author(s) -
Saegusa Yasuo,
Horikiri Masahiro,
Nakamura Shigeo
Publication year - 1997
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.1997.021980233
Subject(s) - condensation polymer , tetramine , polymer chemistry , thermal stability , polymer , solubility , chemistry , organic chemistry
Two novel fluorine‐containing aromatic polybenzimidazoles were synthesized by direct polycondensation of 4,4′‐(hexafluoroisopropylidene)dibenzoic acid with 3,3′‐diaminobenzidine tetrahydrochloride and 1,2,4,5‐benzenetetramine tetrahydrochloride. The effect of introduction of fluorine on the synthesis and properties of these polymers is discussed. The new polybenzimidazoles show good solubility in organic solvents, excellent mechanical properties and high thermal stability.