Synthesis and characterization of chiral side-chain liquid-crystalline polymer containing menthol ester
作者： Tong-Ying Jiang , Bao-Yan Zhang , Mei Tian , Ying Wang
DOI: 10.1002/APP.12500
关键词: Optical rotation 、 Differential scanning calorimetry 、 Chirality (chemistry) 、 Mesogen 、 Polymer chemistry 、 Chemistry 、 Thermogravimetric analysis 、 Thermotropic crystal 、 Glass transition 、 Polymer 、 Crystallography
摘要: The synthesis of new chiral side-chain liquid-crystalline polysiloxanes containing p-(allyoxy)benzoxy-p-chlorophenyl (ABCH) as mesogenic units and undecylenic acid menthol ester (UM) nonmesogenic is presented. chemical structures monomers polymers are confirmed by IR spectroscopy. Differential scanning calorimetry (DSC) thermogravimetric analysis (TGA) used to measure thermal properties those polymers. Mesogenic characterized polarized optical microscope (POM), DSC, small-angle X-ray diffraction. Analytic results revealed that P0–P6 thermotropic with low glass transition; Polymers P2–P6 exhibit smectic marble texture, rotation, a sharp reflection at angles in diffraction; P0, P1 only without chirality; P7 exhibits chirality properties. All the good stability temperature 5% mass loss over 297°C. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 89: 2845–2851,
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