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Synthesis and modification of aromatic polyesters with chloroacetyl 3,5-dibromo-p-hydroxybenzoic acid

✍ Scribed by Sedat Ozden; A. M. Charayev; R. C. Bazheva

Publisher
John Wiley and Sons
Year
2009
Tongue
English
Weight
403 KB
Volume
111
Category
Article
ISSN
0021-8995

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✦ Synopsis

Abstract

Aromatic copolyesters based on diphenylolpropane and 3,5‐dibromo‐p‐hydroxybenzoic acid (p‐HBA) were synthesized by an acceptor‐catalyzed polycondensation method. During the synthesis, equimolar mixtures of chloranhydrides of isophthalic and terephthalic acids were used. The effects of p‐HBA on the tensile and thermal properties of the polyesters were investigated. The breaking stress and modulus of elasticity increased with the amount of p‐HBA up to 10% in molar mass. A further increase in p‐HBA caused deterioration of the tensile properties. The elongation at break decreased at low p‐HBA contents (<5%). The addition of p‐HBA increased the molecular packing and the limiting oxygen index and improved the thermal behavior of the synthesized polyesters. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2009

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