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Thermal and liquid crystalline properties of liquid crystalline polymethacrylates with ammonium units and their non‐ionic family
Author(s) -
Ujiie Seiji,
Tanaka Yutaka,
Iimura Kazuyoshi
Publication year - 2000
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/1099-1581(200008/12)11:8/12<450::aid-pat991>3.0.co;2-7
Subject(s) - ionic liquid , thermotropic crystal , materials science , ionic bonding , phase (matter) , chemical engineering , phase transition , thermal stability , liquid crystalline , glass transition , polymer chemistry , organic chemistry , polymer , composite material , chemistry , ion , thermodynamics , physics , engineering , catalysis
Ionic and non‐ionic liquid crystalline polymethacrylates were synthesized, and their thermal and liquid crystalline properties were compared. Both the ionic and non‐ionic liquid crystalline polymethacrylates exhibited a thermotropic smectic A phase. An isotropization temperature of the ionic liquid crystalline polymethacrylate was higher than for the non‐ionic liquid crystalline polymethacrylate. Moreover, the ionic liquid crystalline polymethacrylate showed a higher glass transition temperature when compared to the non‐ionic liquid crystalline polymethacrylate. The ionic and non‐ionic liquid crystalline polymethacrylates formed a partial bilayer structure in the smectic A phase. Copyright © 2000 John Wiley & Sons, Ltd.