Abstract
Polyesters synthesized (by a melt-phase transesterification route) from terephthalic acid, hydroquinone diacetate, 6-acetoxy-2-naphthoic acid, 2,5-bis(acetoxyaryl)-1,3,4-oxadiazoles and (1,3,4-oxadiazole-2,5-diyl)dibenzoic acids have been studied by differential scanning calorimetry, hot-stage polarized light microscopy and thermal gravimetric analysis. Their fibre-forming properties have also been explored. Many of these polyesters have high thermal stability (>400°C), a liquid-crystalline melt phase and a light colour. Some also yield strong, stiff fibres.
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