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Mesomorphic behavior and microstructure of side chain liquid crystalline copolysiloxane polymers II. With an oligo(ethylene oxide) unit and a cyano unit in the side chain

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Abstract

This manuscript proposes a packing arrangement model for a co-mesogenic sidechain liquid crystalline copolysiloxane polymer copoly[4-allyloxy-benzoic acid [4′-2-(2-methoxyethoxy) ethoxy] biphenyl]-4-y1 ester-co-4-allyloxy-[(4-cyano)-4′-phenyl] carboxyl benzoate ester (copoly [(MS3BDBE2)-co-(MCN)]x/y depending on the relative molar composition of each mesogen. From the analysis of the thermal data, X-ray diffraction data, and solid state NMR spin-lattice relaxation (T1ρ H) data, we have found two side chain molecules in the mesophase layer coming from the same or a different polymer backbone. They are presumed to be mixed and form a bilayer smectic C mesophase at lower MCN concentrations as well as at higher MCN concentrations.

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  1. Department of Chemical Engineering, Cheng-Shiu Institute of Technology, Kaohsiung, 833, Taiwan, ROC

    Wei-Shan Lee

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  1. Wei-Shan Lee
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Lee, WS. Mesomorphic behavior and microstructure of side chain liquid crystalline copolysiloxane polymers II. With an oligo(ethylene oxide) unit and a cyano unit in the side chain. J Polym Res 6, 107–115 (1999). https://doi.org/10.1007/s10965-006-0077-0

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  • DOI: https://doi.org/10.1007/s10965-006-0077-0

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