The rheological, thermodynamic and structural properties of two liquid crystalline polyesters—poly(oxyfumaroyloxy‐ 1,4‐phenylene carbonyloxyalkyleneoxycarbonyl‐ 1,4‐phenylene)s with six and ten methylene groups (PES‐6 and PES‐ 10, respectively) and a statistical copolyester (co‐PES) have been investigated. It has been shown that they all form a smectic LC‐phase. The change from homopolyesters to co‐PE S expands the temperature range of the LC‐state. The high sensitivity of the structure to the prehis…
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