균일한 자성 고분자 입자의 합성

안병현; Byung Hyun Ahn

Journal of the Korean Industrial and Engineering Chemistry, Vol.19, No.3, 316-321, June, 2008

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균일한 자성 고분자 입자의 합성

Synthesis of Monodispersed Magnetic Polymer Particle

안병현^†

부경대학교 신소재공학부

Byung Hyun Ahn^†

Division of Material Engineering, Pukyong National University, Pusan 608-739, Korea

E-mail:

초록

Styrene과 4-vinylpyridine의 공중합체(poly(st-co-4vp)) 입자를 무유화제 유화중합에 의해 합성하고 이 입자 내부에 iron pentacarbonyl을 침투시킨 후 열분해 시켜 입자의 표면과 내부에 산화철 나노입자를 갖는 자성 poly(st-co-4vp) 입자를 제조하였다. 얻어진 자성 poly(st-co-4vp) 입자의 크기와 분포, 열적 특성 및 자성 특성에 대해서 조사하였다. 자성 poly(st-co-4vp) 입자는 크기가 약 250 nm 정도로 매우 균일하였으며 약 14%의 산화철을 가졌다. 산화철은 XRD 시험에 의해 대부분 Fe3O4임이 확인되었으며 superconducting susceptometer (SQUID) 시험에 의해 자성 poly(st-co-4vp) 입자가 초상자성을 가짐을 확인하였다.

Monodispersed particles of poly(styrene-co-4-vinylpyridine), poly(st-co-4vp) were prepared by soapless emulsion polymerization. Iron oxide was formed on the surface and inside of the poly(st-co-4vp) particles by thermal decompostion of iron pentacarbonyl. The obtained magnetic poly(st-co-4vp) particles was mondispersed and the average size was 250 nm. The magnetic poly(st-co-4vp) particles had 14% of iron oxide, which was identified as Fe3O4 by XRD. The magnetic poly(st-co-4vp) particles had superparamagnetism according to superconducting susceptometer (SQUID).

Keywords:magnetic polymer particle;soapless emulsion polymerization;iron pentacarbonyl;superparamagnetism

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[2] Haik Y, Pai V, Chen CJ, J. Magn. Magn. Mater., 194, 254 (1999)

[3] Setchell CH, J. Chem. Technol. Biotechnol. B, 35, 175 (1985)

[4] Shinkai M, Honda H, Kobayashi T, Biocatalysis, 5, 61 (1991)

[5] Kondo A, Kamura H, Higashitani K, Appl. Microbiol., 41, 99 (1994)

[6] Meza M, Hafeli U, Schutt W, Zborowski M, Et AL, Scientific and Clinical Applications of Magnetic Carriers, Plenum Press, New York (1997)

[7] Elaissari A, Rodrigue M, Meunier F, Herve C, J. Magn. Magn. Mater., 225, 127 (2001)

[8] Gupta PK, Hung CT, Life Sci., 44, 175 (1989)

[9] Yanase N, Noguchi H, Asakura H, Suzuta T, J. Appl. Polym. Sci., 50, 765 (1993)

[10] Xu X, Friedman G, Humfeld KD, Majetich SA, Asher SA, Chem. Mater., 14, 1249 (2002)

[11] Xu X, Friedman G, Humfeld KD, Majetich SA, Asher SA, Adv. Mater., 13, 1681 (2001)

[12] Dresco PA, Zaitsev VS, Gambino RJ, Chu B, Langmuir, 15(6), 1945 (1999)

[13] Wormuth K, J. Colloid Interface Sci., 241(2), 366 (2001)

[14] Deng Y, Wang L, Yang W, Fu S, Elaissari A, J. Magn. Magn. Mater., 257, 69 (2003)

[15] Ugelstad J, Berge A, Ellingsen T, Schmid R, Nilsen TN, Mork PC, Stenstad P, Hornes E, Olsvik O, Prog. Polym. Sci, 17, 87 (1992)

[16] Caruso F, Caruso RA, Mohwald H, Science, 282(5391), 1111 (1998)

[17] Lindlar B, Boldt M, Eiden-Assmann S, Maret G, Adv. Mater., 14(22), 1656 (2002)

[18] Ma ZY, Guan YP, Liu HZ, J. Polym. Sci. A: Polym. Chem., 43(15), 3433 (2005)

[19] Okubo M, Minami H, Komura T, J. Appl. Polym. Sci., 88(2), 428 (2003)

[20] Lu A, Salabas EL, Schuth F, Angew. Chem.-Int. Edit., 46, 1222 (2007)

[21] Burke NAD, Stover HDH, Dawson FP, Chem. Mater., 14, 4752 (2002)

[22] Butter K, Philips AP, Vroege GJ, J. Magn. Magn. Mater., 252, 1 (2002)

[23] Hyeon T, Lee SS, Park J, Chung Y, Bin Na H, J. Am. Chem. Soc., 123(51), 12798 (2001)

[24] Polymer Handbook, 3rd Edition, eds J. Brandrup and E. H. Immergut, John Wiley (1989)

[25] Fox TG, Bull. Am. Phys. Soc., 1, 123 (1956)