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Specific features of liquid-crystalline comb-like polymers with mesogenic groups

✍ Scribed by V.P. Shibaev; V.M. Moiseenko; Ya.S. Freidzon; N.A. Platé

Publisher
Elsevier Science
Year
1980
Tongue
English
Weight
447 KB
Volume
16
Category
Article
ISSN
0014-3057

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✦ Synopsis

The results of structural investigation of the new type of the liquid-crystalline thermotropic methacrylic polymers are discussed. These polymers contain mesogenic groups as models for cholesteric, nematic and smectic types of low-molecular liquid crystals. The groups are attached to the backbone through methylene bridges of various lengths. The polymers of the first group have amorphous structure; the polymers of the second group are characterized by liquid crystalline structure and those of the third group can exist in both crystalline and liquid-crystalline states, manifesting properties of enantiotropic liquid crystals. The temperatures and heats of phase transitions have been determined. It is shown that the ability to realize the liquid-crystalline state of comb-like polymers with mesogenic groups depends on and is determined by the proceess of ordering of these groups.

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