A Structural Investigation of Some Terminally Cyano-Substituted Side Chain Liquid-Crystalline Polysiloxanes |
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| Authors: | H H Sutherland Z Ali Adib G W Gray D Lacey G Nestor K J Toyne |
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| Institution: | 1. Department of Physics , University of Hull , Hull, HU6 7RX, England;2. Department of Chemistry , University of Hull , Hull, HU6 7RX, England |
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| Abstract: | Abstract A series of terminally cyano substituted side chain polysiloxanes have been characterized using optical microscopy, D.S.C., and X-ray diffraction. Values for the lamellar spacings, d, of the interdigitated smectic A phases were obtained, and the variations in d with temperature and length of the flexible aliphatic spacer are discussed. The spacing for m = 4, 5, and 6 increased regularly with m whereas the short m = 3 spacer gave an anomalously high value. |
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