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- W2013669126 abstract "본 실험에서는 cyclic carbonate를 함유하는 styrene 유도체 VBCE를 Williamson 반응으로 합성하였으며 일반적인 조건에서 고분자중합까지 가능함을 보여주었다. 합성한 poly(VBCE)는 PEGMA와의 블렌드를 통하여 고분자전해질로 제조되었으며 이온전도도에 미치는 조성의 영향을 평가하였다. 흥미롭게도 poly(VBCE)의 함량이 0, 1.9, 5.8 mol%로 증가한 경우, 상온 이온전도도는 각각 <TEX>$4.2{times}10^{-5}$</TEX>, <TEX>$1.45{times}10^{-5}$</TEX>, <TEX>$3.93{times}10^{-6}S;cm^{-1}$</TEX>로 감소하는 경향을 보여주었다. DSC 측정결과, poly(VBCE)의 도입이 PEGMA의 <TEX>$T_g$</TEX>에 크게 영향을 주어 도입전 <TEX>$-50^{circ}C$</TEX>에서 <TEX>$-40^{circ}C$</TEX>, <TEX>$-21^{circ}C$</TEX>로 각각 증가되는 현상을 관찰하였다. 이것은 극성 cyclic carbonate의 존재가 이온전도성 기질인 PEGMA의 유동성을 감소시키기 때문으로 이해할 수 있다. 따라서 cyclic carbonate를 고분자기질에 고정시키기 위해서는 기질의 움직임을 감소시키지 않는 분자설계가 필요할 것이다. In this study polystyrene derivative, VBCE, having a cyclic carbonate was synthesized by Williamson reaction and polymerized to poly(VBCE) successfully in an usual polymerization conditions. The obtained polymer was blended with PEGMA and the effect of composition on the ionic conductivity was investigated. Interestingly, the ionic conductivity was decreased from <TEX>$4.2{times}10^{-5}S;cm^{-1}$</TEX> to <TEX>$3.93{times}10^{-6}S;cm^{-1}$</TEX> with the poly(VBCE) contents of 5.8mol%. From the DSC study, it was found that the <TEX>$T_g$</TEX> of the blend was increased from <TEX>$-50^{circ}C$</TEX> to <TEX>$-21^{circ}C$</TEX> by the addition of poly(VBCE). Therefore, it is believed that the presence of a polar cyclic carbonate makes polymer matrix harder and it is necessary to design new structures less hindered the mobility of the matrix." @default.
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- W2013669126 date "2015-02-28" @default.
- W2013669126 modified "2023-09-30" @default.
- W2013669126 title "Synthesis and Ionic Conductivity of Polystyrene Derivative Containing Cyclic Carbonate" @default.
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- W2013669126 doi "https://doi.org/10.5229/jkes.2015.18.1.1" @default.
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