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Synthesis and characterization of a series of liquid crystal polymers with X-shaped two-dimensional mesogenic units

✍ Scribed by Z. F. Li; L. Li; S. Y. Zhang; S. K. Cao; Q. F. Zhou

Publisher: John Wiley and Sons
Year: 1997
Tongue: English
Weight: 300 KB
Volume: 8
Category: Article
ISSN: 1042-7147
DOI: 10.1002/(sici)1099-1581(199711)8:11<674::aid-pat700>3.0.co;2-g

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✦ Synopsis

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

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