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Received June 5, 2006
Accepted October 25, 2006
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Examination of the surface properties of kaolinites by inverse gas chromatography: Dispersive properties
Dep’t of Mineral Resources & Energy Eng., Chonbuk National Univ., Jeonju 561-756, Korea
Korean Journal of Chemical Engineering, January 2007, 24(1), 165-169(5), 10.1007/s11814-007-5026-z
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Abstract
The application of inverse gas chromatography (IGC) for the examination of the surface properties of untreated kaolinite and kaolinites surface-treated with titanate coupling agents is discussed. This paper presents and discusses the dispersive properties expressed by γSD, the dispersive component of the surface free energy, as determined at various temperatures. The γSD values of all the samples were negatively correlated with the temperature of IGC measurement. At the same temperature of IGC measurement, the values of γSD determined by IGC were significantly lower for the surface-treated kaolinites than for the untreated ones. The γSD value of the kaolinite surface-treated with isopropyl triisostearoyl titanate (ITT) at 150 ℃exhibited a surface energy close to that (28.3 mJm.2) of polyethylene with no surface polarity.
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References
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Chehimi MM, Pigois-Landureau E, J. Mater. Chem., 4(5), 741 (1994)
Donnet JB, Park SJ, Balard M, Chromatographia, 31, 434 (1991)
Dorris GM, Gray DG, J. Colloid Interface Sci., 77(2), 353 (1980)
James AT, Martin AJP, Biochemistry, 50, 679 (1952)
Jepson WB, Phil. Trans. R. Soc. London, A311, 411 (1984)
Katz HS, Handbook of fillers and reinforcements for plastics, Van Nostrand Reinhold Company, 119 (1978)
Monte SJ, Sugerman G, Org. Plast. Coatings Chem., 38, 49 (1978)
Panzer U, Schreiber H, Macromolecules, 25, 3633 (1992)
Papier E, Balad H, Rahmani Y, Chromatographia, 23, 639 (1987)
Sidqi M, Balard H, Papirer E, Chromatographia, 27, 311 (1989)
Voekel A, Andrzejewska E, Maga R, Andrzejewski M, Polymer, 33, 3109 (1993)
Wu S, J. Macromol. Sci.-Rev. Macromol. Chem. Phys., 10, 1 (1974)
