Abstract
AbstractRandom copolyesters of different compositions were synthesized by melt polycondensation of poly(ethylene terephthalate) and 3‐bromo ‐ and 3,5‐dibromo‐p‐hydroxybenzoic acids. The copolymer compositions were determined by proton nuclear magnetic resonance spectroscopy. The thermal behavior of these copolyesters was investigated by differential scanning calorimetry. The glass transition temperature, crystallization temperature, and decomposition temperature were found to increase with increase in the paraoxybenzoate content of the copolyesters. The limiting viscosity number and the weight‐average molecular weight were determined.
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