Structural Assignment of Side Chain Liquid Crystalline Monomer and Polymer by 1-D and 2-D Solution NMR Studies |
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| Authors: | G. Siva Mohan Reddy T. Narasimhaswamy K. Mohana Raju |
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| Affiliation: | 1. Department of Polymer Science &2. Technology, Sri Krishnadevaraya University, Anantapur, India;3. Department of Applied Chemistry, University of Johannesburg, Doornfontein, Johannesburg, South Africa;4. Polymer Division, Central Leather Research Institute, Adyar, Chennai, India |
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| Abstract: | In the present study, the synthesis and characterization of a methacrylic-based side chain liquid crystalline monomer and its polymer were investigated with the aid of both 1-D and 2-D nuclear magnetic resonance (NMR) techniques. The mesophase characteristics of the monomer and polymer were determined by hot-stage optical polarized microscopy (HOPM). The nematic and smectic phases were observed for the monomer and polymer. Furthermore, 13C spin-lattice relaxation time measurements were performed on the above systems in order to monitor molecular dynamics. The present study provides an opportunity to carry out a systematic comparison of the evolution of structural as well as dynamical changes of the monomer and the polymer. |
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| Keywords: | 2-D NMR 13C NMR 1H NMR Liquid crystals Mesophase |
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