A Structural Investigation of Some Terminally Cyano-Substituted Side Chain Liquid-Crystalline Polysiloxanes
Titel:
A Structural Investigation of Some Terminally Cyano-Substituted Side Chain Liquid-Crystalline Polysiloxanes
Auteur:
Sutherland, H. H. Adib, Z. Ali Gray, G. W. Lacey, D. Nestor, G. Toyne, K. J.
Verschenen in:
Liquid crystals
Paginering:
Jaargang 3 (1988) nr. 10 pagina's 1293-1300
Jaar:
1988-10-01
Inhoud:
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.