- Previous Article
- Next Article
- Table of Contents
Polymer(Korea), Vol.25, No.4, 602-607, July, 2001
이타코네이트 단위를 포함하는 새로운 이중 측쇄 아크릴로니트릴 공중합체의 제조 및 이온전도 특성 조사
Preparation and Ion-Conducting Properties of New Double Comb-like Acrylonitrile Copolymers Containing Itaconate Units
E-mail:
초록
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.
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.
Keywords:ion-conducting polymer;polyacrylonitrile-co-bis(2-methoxyethyl)itaconate;gel electrolyte;double comb-like polymer
- Gray F, Armand M, "Handbook of Battery Materials", J.O. Besenhard, ed., Part III, chap. 8, Wiley-VCH, New York, and references therein (1999)
- Powers RA, MacArthur DM, "Lithium and Lithium Ion Batteries", Powers Associates, Ohio (1996)
- Linden D, "Handbook of Batteries", 2nd ed., MacGraw Hill, London (1994)
- Murata K, Izuchi S, Yoshihisa Y, Electrochim. Acta, 45(8-9), 1501 (2000)
- Feuillade G, Perche P, J. Appl. Electrochem., 5, 63 (1975)
- Lauter U, Meyer WH, Wegner G, Macromolecules, 30(7), 2092 (1997)
- Tunemi K, Ohno H, Tsuchida E, Electrochim. Acta, 28, 591 (1983)
- Killis A, LeNest JF, Gandini A, Cheradame H, Cohen JP, Solid State Ion., 14, 231 (1984)
- Tada T, Sato M, Takeno N, Kameshima T, Nachacho T, Shigekara K, Macromol. Chem. Phys., 195, 571 (1994)
- Angell CA, Liu C, Sanches E, Nature, 362, 137 (1993)
- Watanabe M, Yamada W, Sanui K, Ogata N, J. Chem. Soc. -Chem. Commun., 929 (1993)
- Iijima T, Tyoguchi Y, Eda N, Denki Kagaku, 63, 619 (1985)
- Croce F, Brown SD, Greenbaum SG, Slane S, Salomon M, Chem. Mater., 5, 1268 (1993)
- Stallworth PE, Greenbaum SG, Croce F, Slane S, Salomon M, Electrochim. Acta, 40(13-14), 2137 (1995)
- Kim H, Kim E, Rhee SB, Korea Polym. J., 4(2), 83 (1996)
- Kim DW, Kim YR, Sun YK, Oh BK, Moon SI, Jin BS, Polym.(Korea), 21(5), 861 (1997)
- Rhee HW, Park JK, Gong MS, Polym.(Korea), 22(6), 872 (1998)
- Moon SI, Gong MS, Polym.(Korea), 22(5), 699 (1998)
- Choi BK, Kim SH, Gong MS, J. Korean Electrochem. Soc., 3, 169 (2000)
- Choi BK, Kim YW, Gong MS, Ahn SH, Electrochim. Acta, submitted