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* PDF α Ͻñ ٶϴ. |
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1990 / ȣ: V.2,no.4,Dec |
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ο 罽 ռ (1) -Ƿ ƼŻ Moiety Ұ ν ɼ- |
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Synthesis and Properties of New Side Chain Liquid Crystalline Polymer (I) -Potential of Spiroacetal Moiety as a Mesogen Unit- |
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(ϴб а) ̱ (ѱȭп 2) ֱ濵 (ѱȭп 2) (ϴб ȭа) ֵ (ϴб а) |
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(ϴб а) ̱ (ѱȭп 2) ֱ濵 (ѱȭп& |
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245 ~ 250 : 6 |
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Korean |
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Copolyspiroacetals were synthesized by interfacial polycondensation from 3, 9-bis(4-hydroxyphenyl)-2, 4, 8, 10-tetraoxaspiroundecane(SAB) and 4, 4\\\'-biphenol(BP) with sebacoyl chloride. These copolymers were soluble in polar solvent such as phenol/tetrachloroethane and sulfuric acid, and exibited good thermal stability. But they did not exhibit thermotropic mesophases. The structures of spiroacetal moiety were observed by computer-aided-modeling that had two types of conformational isomers and not linear and/or not planar conformations. |
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Reference |
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