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Synthesis and characterization of a series of liquid crystal polymers with X‐shaped two‐dimensional mesogenic units
Author(s) -
Li Z. F.,
Li L.,
Zhang S. Y.,
Cao S. K.,
Zhou Q. F.
Publication year - 1997
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/(sici)1099-1581(199711)8:11<674::aid-pat700>3.0.co;2-g
Subject(s) - mesogen , thermotropic crystal , liquid crystal , materials science , differential scanning calorimetry , polymer , crystallography , condensation polymer , polymer chemistry , optical microscope , liquid crystalline , chemical engineering , composite material , scanning electron microscope , thermodynamics , chemistry , physics , optoelectronics , engineering
A series of liquid crystal polymers (LCPs) with X‐shaped two‐dimensional mesogenic units has synthesized via low temperature solution polycondensation. The liquid crystalline behaviors of the polymers were characterized using differential scanning calorimetry, polarized microscopy and X‐ray diffraction. It was found that all the polymers show nematic thermotropic liquid crystalline characteristics, and their melting temperature T m and isotropization temperature T i change regularly with varying of the length of the flexible spacer and of the side groups © 1997 John Wiley & Sons, Ltd.