Summary
The effect on the mesophase behaviour of the substitution of mesogenic bibenzoate groups by non-mesogenic terephthalate units is studied. Time-resolved synchrotron X-ray and DSC experiments indicate that copolymers with an amount of terephthalate units as high as 29 mol% exhibit liquid crystalline properties, and a smectic mesophase is obtained on cooling, which further experiences a transformation into a three-dimensional crystal. The two transitions are rather sharp and well defined, in contrast to other similar copolymers.
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Pérez-Manzano, J., Fernández-Blázquez, J., Bello, A. et al. Liquid-crystalline copolymers of bibenzoate and terephthalate units. Polym. Bull. 56, 571–577 (2006). https://doi.org/10.1007/s00289-006-0520-8
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DOI: https://doi.org/10.1007/s00289-006-0520-8