Reddy, GSMNarasimhaswamy, TRay, Suprakas SRaju, KM2019-05-072019-05-072018-06Reddy, G.S.M., Narasimhaswamy, T., Ray, S.S. & Raju, K.M. 2018. Synthesis and mesophase characterization of methacrylate based three phenyl ring core side chain liquid crystalline copolymers. Journal of Molecular Liquids, Vol 259, pp. 416-4230167-73221873-3166https://doi.org/10.1016/j.molliq.2018.03.036https://www.sciencedirect.com/science/article/pii/S0167732217360762?via%3Dihubhttp://hdl.handle.net/10204/10979Copyright: 2018 Elsevier. Due to copyright restrictions, the attached PDF file only contains the abstract version of the full-text item. For access to the full-text item, please consult the publisher's website. The definitive version of the work is published in Journal of Molecular Liquids, Vol 259, pp. 416-423A new series of side chain liquid crystalline copolymers consisting of a mesogenic monomer and a nonmesogenic n-butyl methacrylate are prepared by free radical solution polymerization. The mesogenic monomer is synthesized by a multistep route and is built with side arm core consisting of three phenyl rings linked by an ester and a terminal alkoxy chain at one end and hexamethylene spacer between methacyrlate unit and the phenyl ring core. The copolymers are synthesizedwith different feed ratios of liquid crystallinemonomer and n-butyl methacrylate to realize composition dependent copolymers. The mesogenic monomers are characterized by FTIR, (sup)1H and (sup)13C NMR while for a representative mesogen solution two-dimensional (2D) NMR experiments are also carried out. The hot-stage optical polarized microscopy, differential scanning calorimetry and variable temperature powder X-ray diffraction investigations revealed the existence of enantiotropic nematic (N) and smectic C (SC) mesophases for the copolymers. The weight average and number average molecular weight of the copolymers are found to be in the range 1.6 × 10(sup)4 to 3.7 × 10(sup)4 g/mol from gel permeation chromatography. Thermal degradation profile of mesogenic copolymers investigated by thermogravimetric analysis revealed that the copolymers are stable till 335 °C in nitrogen atmosphere. The copolymer compositions were determined using 1H NMR analysis.enCopolymersPhenyl ringLiquid crystallineArticleReddy, G., Narasimhaswamy, T., Ray, S. S., & Raju, K. (2018). Synthesis and mesophase characterization of methacrylate based three phenyl ring core side chain liquid crystalline copolymers. http://hdl.handle.net/10204/10979Reddy, GSM, T Narasimhaswamy, Suprakas S Ray, and KM Raju "Synthesis and mesophase characterization of methacrylate based three phenyl ring core side chain liquid crystalline copolymers." (2018) http://hdl.handle.net/10204/10979Reddy G, Narasimhaswamy T, Ray SS, Raju K. Synthesis and mesophase characterization of methacrylate based three phenyl ring core side chain liquid crystalline copolymers. 2018; http://hdl.handle.net/10204/10979.TY - Article AU - Reddy, GSM AU - Narasimhaswamy, T AU - Ray, Suprakas S AU - Raju, KM AB - A new series of side chain liquid crystalline copolymers consisting of a mesogenic monomer and a nonmesogenic n-butyl methacrylate are prepared by free radical solution polymerization. The mesogenic monomer is synthesized by a multistep route and is built with side arm core consisting of three phenyl rings linked by an ester and a terminal alkoxy chain at one end and hexamethylene spacer between methacyrlate unit and the phenyl ring core. The copolymers are synthesizedwith different feed ratios of liquid crystallinemonomer and n-butyl methacrylate to realize composition dependent copolymers. The mesogenic monomers are characterized by FTIR, (sup)1H and (sup)13C NMR while for a representative mesogen solution two-dimensional (2D) NMR experiments are also carried out. The hot-stage optical polarized microscopy, differential scanning calorimetry and variable temperature powder X-ray diffraction investigations revealed the existence of enantiotropic nematic (N) and smectic C (SC) mesophases for the copolymers. The weight average and number average molecular weight of the copolymers are found to be in the range 1.6 × 10(sup)4 to 3.7 × 10(sup)4 g/mol from gel permeation chromatography. Thermal degradation profile of mesogenic copolymers investigated by thermogravimetric analysis revealed that the copolymers are stable till 335 °C in nitrogen atmosphere. The copolymer compositions were determined using 1H NMR analysis. DA - 2018-06 DB - ResearchSpace DP - CSIR KW - Copolymers KW - Phenyl ring KW - Liquid crystalline LK - https://researchspace.csir.co.za PY - 2018 SM - 0167-7322 SM - 1873-3166 T1 - Synthesis and mesophase characterization of methacrylate based three phenyl ring core side chain liquid crystalline copolymers TI - Synthesis and mesophase characterization of methacrylate based three phenyl ring core side chain liquid crystalline copolymers UR - http://hdl.handle.net/10204/10979 ER -