• [Note]
  • Preparation and Ion-Conducting Properties of New Double Comb-like Acrylonitrile Copolymers Containing Itaconate Units
  • Lee CW, Seol WH, Choi BK, Gong MS
  • 이타코네이트 단위를 포함하는 새로운 이중 측쇄 아크릴로니트릴 공중합체의 제조 및 이온전도 특성 조사
  • 이칠원, 설완호, 최병구, 공명선
Abstract
Bis(2-methoxyethyl)itaconate (bis(ME)I) was prepared for a new gel electrolyte containing double comb-like itaconate unit by esterification reaction of 2-methoxyethanol with itaconic acid. The copolymers were composed of AN/bis(ME)I = 9/1 ~ 1/1. The optimum mechanical properties and conductivity were obtained from the composition of AN/bis(ME)I = 5/1 and 6/1(25 ~ 35 wt%), LiClO4(15 wt%) and plasticizer (EC/PC = 1/1) (40 ~ 50 wt%). They showed a tough film and maintained a mechanical stability as a free standing film. The plasticized polymer gel electrolytes obtained from them showed ion conductivity of 8.12 x 10(-4) ~ 1.87 x 10(-3) S/cm. The maximum conductivity value obtained from our study was one order of magnitude higher than that of other PEO-based polymer electrolyte at ambient temperature.

이중 측쇄 이타코네이트 단위를 가지는 새로운 겔 전해질로 이용하기 위하여 bis(2-methoxyethyl)itaconate (bis(ME)I)를 itaconic acid와 2-methoxyethanol과 에스테르화 반응에 의하여 합성하였다. AN과 bis(ME)I의 공중합체들은 라디칼 중합에 의하여 AN/bis(ME)I = 9/1 ~ 1/1 조성을 가지는 것을 합성하였다. 최적의 기계적 성질과 이온전도도는 AN/bis(ME)I = 5/1 과 6/1 (25 ~ 35wt%), LiClO4(15wt%) 그리고 가소제 (EC/PC=1/1) (40 ~ 50wt%)에서 보여주었다. 가소화 겔 이온전도체는 질기고 안정된 기계적 성질을 보여주었으며 이온전도도는 8.12 X 10(-4) ~ 1.87 X 10(-3)S/cm을 보여주었다. 최대 이온전도성을 보여주는 이온전도체는 전형적인 PEO를 중심으로 한 이온전도성 고분자보다 10배 이상 높은 이온전도성을 보여주었다.

Keywords: ion-conducting polymer; polyacrylonitrile-co-bis(2-methoxyethyl)itaconate; gel electrolyte; double comb-like polymer

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  • Polymer(Korea) 폴리머
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This Article

  • 2001; 25(4): 602-607

    Published online Jul 25, 2001

  • Received on May 26, 2001