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논문 기본 정보

자료유형
학술저널
저자정보
Park, Jong-Ryul (Division of Advanced Materials Science and Engineering, Kongju National University) Bang, Moon-Soo (Division of Advanced Materials Science and Engineering, Kongju National University) Choi, Jae-Kon (Deptartment of Biochemical & Polymer Engineering, Chosun University)
저널정보
한국고무학회 Elastomers and composites 엘라스토머 및 콤포지트 제52권 제3호
발행연도
2017.1
수록면
173 - 179 (7page)

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Side-chain liquid crystalline polymers having polysiloxane skeletons were synthesized by a thiol-ene reaction, using two kinds of mesogenic groups: a cholesteryl group for induction into a cholesteric liquid crystal phase and a triazomesogenic group for imparting light-sensitivity. All the synthesized polymers were crystalline, except the one with a single cholesteryl group. Crystallinity, glass transition temperature, and melt transition temperature increased with increasing content of the azomesogenic group. The polymer (P-C10A0) with a single cholesteryl group has a cholesteric phase, the one (P-C0A10) with a single azomesogenic group has a smectic phase, and those with both types of mesogenic groups showed both smectic and cholesteric phases. The temperature ranges of the two liquid crystalline phases in the co-polymers were independent of the contents of the two types of mesogenic groups. The rate of photoisomerization of the light-sensitive azobenzene group in the polymer decreased with increasing azobenzene content due to steric hindrance between the azomesogenic groups.

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