Synthesis and characterization of 6-[4-(trans -4-pentylcyclohexyl)phenoxy]hexyl acrylate homopolymer and copolymers |
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| Authors: | A V Sesha Sainath K Yonetake T Aita T Inoue K Koyama |
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| Institution: | 1. Venture Business Laboratory of Yamagata University, Yonezawa 992-8510, Japan;2. Department of Polymer Science and Engineering, Faculty of Engineering, Yamagata University, Yonezawa 992-8510, Japan |
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| Abstract: | The compound 6-4-(trans -4-pentylcyclohexyl)phenoxy]hexyl acrylate (2) was prepared and homopolymerized. The block copolymer and copolymer of 2 with styrene were synthesized by photopolymerization and solution techniques, respectively. These polymers were characterized by IR and 1H NMR spectra and size exclusion chromatography. Polarizing optical microscopy (POM) and X-ray diffraction (XRD) studies revealed that these polymers exhibited smectic A (SmA) phases. POM showed that the homopolymer showed a higher order SmA phase than did the block copolymer and copolymer. After magnetically forced alignment the samples exhibited similar optical texture but the domain size of the liquid crystalline phase increased. Differential scanning calorimetry, POM and XRD data suggest that the SmA domain size decreased in the order hompolymer > block copolymer > copolymer. |
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| Keywords: | photonic crystal fibres liquid crystal photonic bandgap fibre sensor |
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