caa a22 4500 465788351 CHVBK 20180323112016.0 cr unu---uuuuu 170327e19900501xx s 000 0 eng 10.1007/BF00419974 doi (NATIONALLICENCE)springer-10.1007/BF00419974 Liquid crystal copolyethers with mixed mesogenic units and flexible spacers [Elektronische Daten] [A. Misyan, C. Ober] Summary: Liquid crystalline copolyethers were prepared from monomer pairs selected from biphenol (BP), dihydroxy-α-methylstilbene (DHMS), and 2,2′-dimethyl-4,4′-dihydroxyazoxybenzene (DMAz) which were copolymerized with either dibromononane or dibromodecane spacers by phase transfer catalysis. Nematic LC mesophases were observed for most copolymers, but some exhibited dual mesophases. Smectic to nematic transitions were found in polymers with intermediate ratios of DMAz and DHMS with the nonamethylene spacer. These polymers showed excellent solubility in THF and CHCl3. The longest mesophase range which consisted of two mesophases was found in a polymer composed of a 4:1 ratio of DHMS to BP and a nonane spacer. Springer-Verlag, 1990 Misyan A. Materials Science and Engineering, Cornell University, Bard Hall, 14853-1501, Ithaca, NY, USA aut Ober C. Materials Science and Engineering, Cornell University, Bard Hall, 14853-1501, Ithaca, NY, USA aut Polymer Bulletin Springer-Verlag 23/5(1990-05-01), 535-542 0170-0839 23:5<535 1990 23 289 https://doi.org/10.1007/BF00419974 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00419974 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Misyan A. Materials Science and Engineering, Cornell University, Bard Hall, 14853-1501, Ithaca, NY, USA aut NATIONALLICENCE 700 1- Ober C. Materials Science and Engineering, Cornell University, Bard Hall, 14853-1501, Ithaca, NY, USA aut NATIONALLICENCE 773 0- Polymer Bulletin Springer-Verlag 23/5(1990-05-01), 535-542 0170-0839 23:5<535 1990 23 289 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer