Temperature-induced phase separation of side-chain LCP/LMWLC blends
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- Temperature-induced phase separation of side-chain LCP/LMWLC blends
- Ahn, WonSool; Ha, KiRyong; Park, Lee Soon
- LIQUID-CRYSTALS; BEHAVIOR; POLYMERS; 7CB; low molecular weight liquid crystal (LMWLC); phase separation; side-chain liquid crystal polymer (SCLCP); temperature-induced
- Issue Date
- TAYLOR & FRANCIS LTD
- MOLECULAR CRYSTALS AND LIQUID CRYSTALS, v.458, no., pp.191 - 197
- A blend of side-chain liquid crystal polymer (SCLCP) and low molecular weight liquid crystal (LMWLC) was used to investigate a phase separation behavior induced by temperature. Phase separation at room temperature was observed only for the compositions higher than 60 wt% LMWLC because of good miscibility between two components. An interesting phenomenon was observed when the film transmittance for a phase-separated sample as a function of temperature was measured under cross-polarizer. That is, transmittance below T(NI) of LMWLC was observed lower than that below T(SI) of SCLCP, which was not expected initially. The fact was considered as a micro-phase separation induced by an interfacial effect between SCLCP and LMWLC phase
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