I. Spiliopoulos, J. Mikroyannidis
Jan 27, 1998
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Influential Citations
93
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Quality indicators
Journal
Macromolecules
Abstract
4,4‘‘-Diamino-5‘-phenyl- or 4-alkoxyphenyl-m-terphenyl and 4,4‘‘-dicarboxy-5‘-phenyl-m-terphenyl were synthesized through pyrylium salts and used for the preparation of rigid-rod polyamides and polyimides. The polymers were characterized by inherent viscosity, elemental analysis, FT-IR, UV−vis, 1H NMR, 13C NMR, X-ray, DSC, TMA, TGA, isothermal gravimetric analysis, and moisture absorption. It was shown that the presence of the 4-alkoxyphenyl pendent groups enhanced remarkably the solubility of polymers as well as reduced the Tg's and thermal stability. In addition, the polyamide bearing 4-(dodecyloxy)phenyl side groups displayed softening.