이미다졸-금속 이온 착체를 포함하는 고분자 LB막의 기체 투과성

김병주; 이범종; Byoung Joo Kim; Burm-Jong Lee

Polymer(Korea), Vol.24, No.4, 453-458, July, 2000

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이미다졸-금속 이온 착체를 포함하는 고분자 LB막의 기체 투과성

Gas Permeability of Polymeric LB Films Containing Imidazole-Metal Ion Complexes

김병주, 이범종^†

인제대학교 화학과

Byoung Joo Kim, and Burm-Jong Lee^†

Department of Chemistry, Inje University, Kyungnam 621-170, Korea

E-mail:

초록

이미다졸-금속 이온 구조를 갖는 고분자 Langumuir-Blodgett(LB)막과 이들으이 캐스트막을 다공성막 필터 위에 제조하여 산소와 질소의 투과성을 비교 검토하였다. 양친성 고분자 폴리(N-(2-(4-이미다졸일)에틸)말레이미드-alt-1-옥시테센) (IM-O)은 폴리(무수말레산-alt-1-옥타타센)과 히스타민 반응으로 합성되엇다. IM-O 단분자층은 철(Ⅲ) 이온을 갖는 하층액 위에서 매우 안정하였다. LB막의 분자 구조는 FT-IR을 통하여 결정하였으며, LB막내에 존재하는 금속 이온의 농도는 XPS측정으로 분석하였다. LB막의 균일성과 안정성을 SEM 관찰을 통하여 간접적으로 평가하였다. 본 LB막과 캐스트막의 기체 선택성은 산소보다 질소가 약간 높게 나타났으며, 두 기체에 대하여 모두 고투과성을 나타내었다.

The permeability of oxygen and nitrogen was investigated from the polymeric LB films containing imidazole-metal ion complexes and compared with its corresponding cast films on porous membrane filters. The amphiphilic polymer, poly(N-(2-(4-imidazolyl)ethyl)-maleimide-alt-a-octadecene) (IM-O), was synthesized by reaction of poly(maleic anhydridealt-1-octadecene) with histamine. The IM-O monolayer showed high stability on Fe(Ⅲ) ion-containing subphase. The molecular structure in the LB films was investigated by means of FT-IR spectroscopy. The metal ion concentration incorporated into the LB films was determined by means of XPS measurements. The mechanical stability and uniformith of the LB films on porous substrates were indirectly evidenced by SEM observation. The LB and cast films showed more or less higher selectivity toward nitrogen, and high permeability was found to both oxygen and nitrogen.

Keywords:monolayer;gas permeability;Langmuir-Blodgett(LB) films;selectivity;polymer metal complex

[References]

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[1] Toshima N, "Polymers for Gas Separation," VCH, New York, 1992 (1992)

[2] Rose GD, Quinn JA, Science, 159, 636 (1968)

[3] Ringsdorf GD, Schlarb B, Venzmer J, Angew. Chem.-Int. Edit., 27(1), 113 (1988)

[4] Higashi N, Kunitake T, Kajiyama T, Polym. J., 19, 289 (1987)

[5] Miyashita T, Konno M, Matsuda M, Saito S, Macromolecules, 23, 3531 (1990)

[6] Maximychev AV, Matyukhin VD, Stepina ND, Yanusova LG, Thin Solid Films, 284-285, 866 (1996)

[7] Son JH, Jeong H, Lee BJ, Bull. Korean Chem. Soc., 15(1), 93 (1994)

[8] Kim YG, Im JH, Lee BJ, Kim JH, Mol. Cryst. Liq. Cryst., 337, 269 (1999)

[9] Lee BJ, Kunitake T, Langmuir, 8, 2223 (1992)