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Synthesis and characterization of aromatic/cycloaliphatic poly(amide‐ imide‐imide)s from bis(4‐amino‐ 3,5‐dimethylphenyl) cycloalkane derivatives
Author(s) -
Sowrirajalu Bhuvana,
Muthusamy Sarojadevi
Publication year - 2007
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.2186
Subject(s) - imide , pyromellitic dianhydride , polymer chemistry , thermal stability , inherent viscosity , materials science , polymer , condensation polymer , solubility , diamine , monomer , chemistry , organic chemistry , polyimide , intrinsic viscosity , layer (electronics)
A series of novel aromatic diamines containing cycloaliphatic moieties was synthesized by the reaction of cycloalkanones like cyclohexanone and cycloheptanone with 2,6‐dimethylaniline. The tetrimide diacid was synthesized using the prepared diamine with 3,3′,4,4′‐benzophenonetetracarboxylic acid dianhydride/pyromellitic dianhydride and p ‐aminobenzoic acid. The polymers were prepared by treating the tetrimide diacid with different aromatic diamines. The structures of the monomers and polymers were identified using elemental analysis and Fourier transform infrared, 1 H NMR and 13 C NMR spectroscopy. The polymers show excellent solubility. The polymers are amorphous and have high optical transparency. They also show good thermal stability and their T g value is found to be in the range 268–305 °C. Copyright © 2007 Society of Chemical Industry