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Liquid crystal polymers—VI.: Synthesis and properties of main chain thermotropic polyesters with disiloxane spacers

✍ Scribed by B.-W. Jo; J.-I. Jin; R.W. Lenz

Publisher
Elsevier Science
Year
1982
Tongue
English
Weight
666 KB
Volume
18
Category
Article
ISSN
0014-3057

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✦ Synopsis

New

thermotropic, liquid crystalline polymers were synthesized, and their thermal properties and the characteristics of their mesophases were studied by differential scanning calorimetry, by use of a hot stage on a polarizing microscope, and by small-angle light scattering. The polymers had an aromatic ester triad mesogenic group and a flexible siloxane spacer in the main chain. Equimolar copolymers containing both siloxane and decamethylene spacers were also prepared and characterized. All the polymers formed nematic phases, and the thermodynamic characteristics of their nematic-to-isotropic phase transitions could be explained on the basis of their structural features.

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