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Side‐chain functionalized liquid crystalline polymers and blends, 6. Phase behavior, structure and magnetic properties of Cu(II) containing liquid crystalline ionomers
Author(s) -
Barmatov Evgueni,
Prosvirin Andrey,
Barmatova Marina,
Galyametdinov Yuri,
Haase Wolfgang,
Shibaev Valery
Publication year - 2000
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/(sici)1521-3927(20000301)21:6<281::aid-marc281>3.0.co;2-j
Subject(s) - materials science , phase (matter) , copper , ionomer , polymer , ion , anisotropy , polymer chemistry , chemical engineering , composite material , chemistry , copolymer , organic chemistry , physics , quantum mechanics , metallurgy , engineering
The new series of the LC ionomers containing copper ions has been obtained and their phase behavior has been studied. It was shown that at low metal ion concentrations in the LC ionomers (˜2 mol‐%) the induction of the SmA phase is observed. An increase in the copper ion concentration is accompanied by a slight rise in clearing and glass transition temperatures. The magnetic properties of LC ionomers were studied at the first time. It was shown that LC ionomers are antiferromagneties with a strong exchange interaction J = 174–178 cm –1 . Temperature dependencies of the magnetic moment and the magnetic anisotropy are adequately described in the framework of the 1‐D‐Heisenberg linear‐chain model.