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Received August 13, 2001
Accepted November 19, 2001
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This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits
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Properties of Iron Oxide Particles Prepared in the Presence of Dextran
Department of Chemical Engineering, Chung Ang University, 221, Huksuk-Dong, Dongjak-Ku, Seoul 156-756, Korea 1Department of Chemical Engineering, KyungHee University, Seochun-Ri, Kiheung-Eup, Yongin-Gun, Kyunggi-Do 449-701, Korea
sgkim@cau.ac.kr
Korean Journal of Chemical Engineering, May 2002, 19(3), 480-485(6), 10.1007/BF02697160
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Abstract
Stable aqueous ferrofluids consisting of superparamagnetic iron oxide particles with nanometer size were prepared by adding aqueous dextran solutions of ferric and ferrous chlorides to ammonium hydroxide. The growth of the core particles was shown to be inhibited by the presence of dextran. Procedures to increase the rate of reaction by varying reaction parameters also inhibited the core growth as long as supply of core material was kept constant. The core particles actually existed in the fluid as chain aggregates, the size of which became smaller with the concentration of dextran by a dense coating of the core particles. The aggregate size was also affected by supplying oxygen in the reaction bath and varying the initial total iron concentration, but it was kept fairly constant with the variation in the other reaction parameters.
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References
Babes L, Denizot B, Tanguy G, Le Jeune JJ, Jallet P, J. Colloid Interface Sci., 212(2), 474 (1999)
Coe EM, Bereman RD, Monte WT, J. Inorg. Biochem., 60, 149 (1995)
Groman EV, Josephson L, Lewis JM, "Biodegradable Superparamagnetic Materials for Use in Clinical Applications," U.S. Patent, 4,827,945 (1989)
Gunther WHH, Fujii DK, Kellar KE, Black CDV, Desai VC, Beeber M, Wellons J, Fahlvik AK, Naevestad A, "Superparamagnetic Contrast Media with Starch and Polyalkylene Oxides," U.S. Patent, 6,123,920 (2000)
Hasegawa M, ito Y, Yamada H, Nagae H, Tozawa N, Hino Y, Kito K, Hokukoku S, Lawaczeck R, Ebert W, Pfefferer D, Wagner S, Kresse M, "Water Soluble Carboxypolysaccharide-Magnetic Iron Oxide Complex Having a Small Particle Diameter," U.S. Patent, 5,766,572 (1998)
Jung CW, Jacobs P, Magn. Reson. Imaging, 13(5), 661 (1995)
Jung CW, Magn. Reson. Imaging, 13(5), 675 (1995)
Kawaguchi T, Hasegawa M, J. Mater. Sci. Mater. Med., 11, 31 (2000)
Kellar KE, Fujii DK, Gunther WHH, Briley-Saebo K, Spiller M, Koenig SH, Magn. Resonn. Mater. Phys. Biol. And Med., 8, 207 (1999)
Lopez-Perez JA, Lopez-Quintela MA, Mira J, Rivas J, IEEE Trans. Magn., 33(5), 4359 (1997)
Mendenhall GD, Geng YP, Hwang J, J. Colloid Interface Sci., 184(2), 519 (1996)
Nowik I, Semmler W, Molodtsov S, Hyperfine Interactions, 112(1-4), 77 (1997)
Palmacci S, Josephson L, "Synthesis of Polysaccharide Covered Superparamagnetic Oxide Colloids," U.S. Patent, 5,262,176 (1993)
Popplewell J, Phys. Technol., 15, 150 (1984)
Coe EM, Bereman RD, Monte WT, J. Inorg. Biochem., 60, 149 (1995)
Groman EV, Josephson L, Lewis JM, "Biodegradable Superparamagnetic Materials for Use in Clinical Applications," U.S. Patent, 4,827,945 (1989)
Gunther WHH, Fujii DK, Kellar KE, Black CDV, Desai VC, Beeber M, Wellons J, Fahlvik AK, Naevestad A, "Superparamagnetic Contrast Media with Starch and Polyalkylene Oxides," U.S. Patent, 6,123,920 (2000)
Hasegawa M, ito Y, Yamada H, Nagae H, Tozawa N, Hino Y, Kito K, Hokukoku S, Lawaczeck R, Ebert W, Pfefferer D, Wagner S, Kresse M, "Water Soluble Carboxypolysaccharide-Magnetic Iron Oxide Complex Having a Small Particle Diameter," U.S. Patent, 5,766,572 (1998)
Jung CW, Jacobs P, Magn. Reson. Imaging, 13(5), 661 (1995)
Jung CW, Magn. Reson. Imaging, 13(5), 675 (1995)
Kawaguchi T, Hasegawa M, J. Mater. Sci. Mater. Med., 11, 31 (2000)
Kellar KE, Fujii DK, Gunther WHH, Briley-Saebo K, Spiller M, Koenig SH, Magn. Resonn. Mater. Phys. Biol. And Med., 8, 207 (1999)
Lopez-Perez JA, Lopez-Quintela MA, Mira J, Rivas J, IEEE Trans. Magn., 33(5), 4359 (1997)
Mendenhall GD, Geng YP, Hwang J, J. Colloid Interface Sci., 184(2), 519 (1996)
Nowik I, Semmler W, Molodtsov S, Hyperfine Interactions, 112(1-4), 77 (1997)
Palmacci S, Josephson L, "Synthesis of Polysaccharide Covered Superparamagnetic Oxide Colloids," U.S. Patent, 5,262,176 (1993)
Popplewell J, Phys. Technol., 15, 150 (1984)
