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Synthesis and Properties of Fumed Silicas Modified with Mixtures of Poly(methylphenylsiloxane) and Dimethyl Carbonate
Department of Chemisorption, Chuiko Institute of Surface Chemistry of National Academy of Sciences of Ukraine, Kiev, Ukraine
Department of Chemisorption, Chuiko Institute of Surface Chemistry of National Academy of Sciences of Ukraine, Kiev, Ukraine
Department of Chemisorption, Chuiko Institute of Surface Chemistry of National Academy of Sciences of Ukraine, Kiev, Ukraine
Faculty of Chemistry, Maria Curie-Sklodowska University, Lublin, Poland
Faculty of Chemistry, Maria Curie-Sklodowska University, Lublin, Poland
- 1 Department of Chemisorption, Chuiko Institute of Surface Chemistry of National Academy of Sciences of Ukraine, Kiev, Ukraine
- 2 Department of Chemisorption, Chuiko Institute of Surface Chemistry of National Academy of Sciences of Ukraine, Kiev, Ukraine
- 3 Department of Chemisorption, Chuiko Institute of Surface Chemistry of National Academy of Sciences of Ukraine, Kiev, Ukraine
- 4 Faculty of Chemistry, Maria Curie-Sklodowska University, Lublin, Poland
- 5 Faculty of Chemistry, Maria Curie-Sklodowska University, Lublin, Poland
World Journal of Nano Science and Engineering·Volume 05 (2015)·Pages 152–160·Published 13 November 2015·DOI10.4236/wjnse.2015.54017
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Abstract
Effect of the concentration ratios of organosiloxane/initiator and treatment temperature on the characteristics of hydrophobic products obtained by modification of surface of fumed silica with poly(methylphenylsiloxane) (PMPS) in the presence of dimethyl carbonate has been studied. Morphology, particle size, surface area and coating microstructure of modified silicas were analyzed by methods of transmission electron and atomic force microscopies, nitrogen adsorption-desorption data. Carbon contents in the grafted modifying layer of organosilicas were determined using IR spectroscopy and elemental analysis. Hydrophilic-hydrophobic properties of surface of the obtained modified silicas were estimated by measurements of contact angles of wetting. It was shown that modification of pyrogenic silicas with mixtures of poly(methylphenylsiloxane) and dimethyl carbonate allows to obtain the homogeneous hydrophobic products and serve their nanodispersity.
KeywordsFumed SilicaPoly(methylphenylsiloxane)Dimethyl CarbonateSurface ModificationHydrophilic-Hydrophobic Properties
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