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Synthesis and Characterization of Some Polyesters and Poly(ester-imide)s Based on Bisphenol-A Derivatives

'Petru Poni' Institute of Macromolecular Chemistry, Aleea Grigore Ghica Voda 41A, Iasi 700487, Romania

^* To whom correspondence should be addressed.

	Abstract

Aromatic polyesters and poly(ester-imide)s based on bisphenol-A derivatives were prepared by solution polycondensation at high temperature of three diols with an aromatic diacide chloride containing two preformed ester groups, namely terephthaloyl-bis-(4-oxybenzoylchloride) or two diacide chlorides containing preformed imide rings, namely 4-chloroformyl-N(p-chloroformylphenyl)-phthalimide and 2,2-bis[N-(4-chloroformylphenyl)phthalimidyl] hexafluoropropane. The polymers were easily soluble in polar organic solvents, such as N-methylpyrrolidone, N,N-dimethylformamide, N,N-dimethylacetamide and chloroform. They showed high thermal stability, the decomposition temperature being above 320 °C and the glass transition temperature in the range 92–196 °C. Some of the polymers exhibited thermotropic liquid crystalline behavior.

Key Words: Polyesters, poly(ester-imide)s, polycondensation, thermostability

First published on March 25, 2009
High Performance Polymers 2009, doi:10.1177/0954008308100413


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