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Side‐chain functionalized liquid crystalline polymers and blends, 4. Phase behavior of functionalized liquid crystalline copolymers containing maleic acid fragments
Author(s) -
Barmatov Evgueni,
Barmatova Marina,
Kremer Friedrich,
Shibaev Valery
Publication year - 2000
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/1521-3935(20001101)201:17<2597::aid-macp2597>3.0.co;2-7
Subject(s) - copolymer , mesogen , maleic anhydride , polymer chemistry , maleic acid , polymer , liquid crystal , side chain , materials science , intramolecular force , phase (matter) , hydrogen bond , chemistry , organic chemistry , liquid crystalline , molecule , optoelectronics
A number of new functionalized LC copolymers containing mesogenic oxycyanobiphenyl groups and 3–41 mol‐% of maleic acid has been obtained by free‐radical copolymerization in solution. A significant effect of intramolecular hydrogen bonds on the phase behavior of these copolymers is observed: for a maleic acid content of up to 8 mol‐% LC copolymers form only the nematic and between 10–41 mol‐% the SmA phase is formed. The process of formation of anhydrides in functionalized LC polymers at 130°C is investigated. It is shown that the formation of five‐membered intramolecular anhydride rings does not influence the phase behavior of the LC polymers.