콜레스테릴기와 아조벤젠기를 갖는 곁사슬 액정고분자의 합성 및 성질Syntheses and Properties of Side Chain Liquid Crystalline Polymers with Cholesteryl and Azobenzene Functional Groups
- Other Titles
- Syntheses and Properties of Side Chain Liquid Crystalline Polymers with Cholesteryl and Azobenzene Functional Groups
- Authors
- 구수진; 조국영; 방문수
- Issue Date
- Apr-2019
- Publisher
- 한국공업화학회
- Keywords
- Azobenzene; Cholesteric; Cholesteryl; Mesogen; Side-chain LCP
- Citation
- APPLIED CHEMISTRY FOR ENGINEERING, v.30, no.2, pp.219 - 225
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- APPLIED CHEMISTRY FOR ENGINEERING
- Volume
- 30
- Number
- 2
- Start Page
- 219
- End Page
- 225
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/3383
- DOI
- 10.14478/ace.2019.1006
- ISSN
- 1225-0112
- Abstract
- Side-chain liquid crystalline polymers with various compositions of azobenzene and cholesteryl functional groups as the mesogenic moiety were synthesized by direct polycondensation, and their properties were investigated. The inherent viscosity values of synthesized polymers were between 0.32 and 0.38 dL/g in 1,1,2,2-tetrachloroethane. All polymers except the SP-A10C0 polymer containing only the azobenzene group were amorphous or exhibited very low crystallinity due to the presence of bulky mesogenic side chains. All synthesized polymers exhibited enantiotropic liquid crystallinity; the SP-A10C0 polymer having only the azobenzene group exhibited a nematic phase, and all other polymers showed a cholesteric phase. In particular, it was found that when the content of cholesteryl groups in the side chain of the polymer increases, the liquid crystallinity decreases due to the bulkiness of cholesteryl groups.
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