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Synthesis, structure‐property relations and lyotropic behavior of perfluoroalkyl‐substituted para ‐linked aromatic polyamides
Author(s) -
Hatke Wilfried,
Schmidt HansWerner
Publication year - 1994
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.1994.021951106
Subject(s) - lyotropic , trifluoromethyl , chemistry , condensation polymer , polymer chemistry , polyamide , solubility , trimethylsilyl , polymer , organic chemistry , liquid crystalline , alkyl
A series of perfluoroalkyl‐containing para ‐linked aromatic polyamides based on trifluoromethyl‐ p ‐phenylenediamine and a mixture of trifluoromethyl‐ and pentafluoroethyl‐substituted terephthalic acid have been synthesized. The polyamides were prepared by a low temperature solution polycondensation of aromatic diacyl chlorides with N,N ′‐bis(trimethylsilyl)‐substituted aromatic diamines. The influence of these perfluoroalkyl substituents on thermal properties, solubility and lyotropic behavior is discussed. 19 F NMR spectroscopy was utilized for molecular weight determination and for further examination of the polymer structure.