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Synthesis and characterization of phenylated aromatic poly(amide–amide)s
Author(s) -
Basutkar P. H.,
Joshi M. D.,
Lonikar S. V.,
Maldar N. N.,
Idage B. B.
Publication year - 1998
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/(sici)1097-4628(19980531)68:9<1523::aid-app15>3.0.co;2-#
Subject(s) - amide , condensation polymer , polymer chemistry , polyamide , glass transition , chemistry , diamine , dimethylacetamide , polymer , pyridine , inherent viscosity , organic chemistry , intrinsic viscosity , solvent
A modified new aromatic diamine 2,5‐bis[(4‐aminophenyl)4‐benzamide]‐3,4‐diphenyl thiophene ( VI ) with preformed amide linkages and pendant phenyl substituents was synthesized, characterized by IR, NMR, mass spectroscopy, and a physical constant. Novel poly(amide–amide)s were synthesized from VI and aromatic diacid chlorides in N,N ‐dimethylacetamide by a solution polycondensation technique. The polymers were obtained in 98–100% yields and showed reduced viscosities in the range of 0.80–2.68 dL/g. They were readily soluble in aprotic polar solvents. These poly(amide–amide)s showed glass transition temperatures of 277–280°C as measured by DSC and showed no weight loss below 412°C in a nitrogen atmosphere. The polymers showed moisture regain in the range of 9.52–12.67%. © 1998 John Wiley & Sons, Inc. J Appl Polym Sci 68: 1523–1530, 1998