Proceedings of Japanese Liquid Crystal Society Annual meeting
Online ISSN : 2432-5988
Print ISSN : 1880-3490
ISSN-L : 1880-3490
2013 Japanese Liquid Crystal Conference
Session ID : PA30
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PA30 Thermal Properties and Liquid Crystal Formation of Linear Polyurethane With Mesogenic Groups
*Genichiro ShimadaMasanori NataSeiji Ujiie
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CONFERENCE PROCEEDINGS FREE ACCESS

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Abstract
Liquid crystalline polyurethanes (LCPUs) having amino groups were synthesized from amphiphilic liquid crystalliine compounds. Their thermal and orientational properties were examined by polarizing microscopic observation, DSC and the X-ray diffraction. The amphiphilic liquid crystalline compounds formed smectic and nematic phases. The smectic layer structures with both hydrophilic and hydrophobic sublayer were formed through a microphase segregation. LCPUs synthesized from the amphiphilic liquid crystalline compounds exhibited a nematic phase. A bending behavior of fibers and films of LCPUs was observed through UV light irradiations due to photoisomerization of azobenzene moieties.
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© 2013 Japanese Liquid Crystal Society
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