Synthesis and properties of ellipsoidal hematite/silicone core-shell particles |
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| Authors: | Masato Nakade Tetsuro Ikeda Makoto Ogawa |
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| Affiliation: | (1) Research and Development Division, KOSé Corporation, Azusawa 1-18-4, Itabashi-ku, Tokyo 174-0051, Japan;(2) School of Science and Engineering, Waseda University, Tokyo, Japan;(3) Department of Earth Sciences, Waseda University, Nishi-waseda 1-6-1, Shinjuku-ku, Tokyo 169-8050, Japan |
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| Abstract: | Monodispersed ellipsoidal hematite particles were synthesized and coated with silicone using a silane-coupling agent, phenyltriethoxysilane.
The thickness of the silicone shell was controlled by the concentration of phenyltriethoxysilane and the presence of n-hexadecyltrimethylammonium chloride, which was thought to modify the surface properties of the hematite particles to be organophilic.
The hematite/silicone core-shell particles were strongly hydrophobic and had a good dispersibility and stability in toluene.
Hollow ellipsoidal silicone particles were obtained by the dissolution of hematite with hydrochloric acid from the core-shell
particles. |
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