Facile Modification of Surface of Silica Particles with Organosilanepolyol and Their Characterization 


Vol. 34,  No. 12, pp. 3805-3810, Dec.  2013
10.5012/bkcs.2013.34.12.3805


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  Abstract

The surface modification of silica particles (SPs) was systemically conducted by the treatment of 0.1-10 wt % phenylsilanetriol (PST) on the basis of SPs used through two step processes: 1) the PST coating of SPs via evaporation under reduced pressure and 2) their thermal condensation leading to Si-O-Si bond formation via heating at 130 °C. The evaluation of the modified SPs was conducted by the simple floating test on water and the measurement of the contact angle (CA) of water droplet on the 2-dimensional layer of modified SPs on slide glass. When PST was used about 2 wt % or above on the basis of SPs (about average size: 50 nm) used, the modified SPs were fully floated on the water and all dispersed into upper organic solvent layer after a shaking with the mixture of the water and benzene, indicating that the modified SPs have hydrophobic properties. The modified SPs were characterized by 29Si MAS NMR and physicochemical properties including SEM, TEM, BET, adsorption/desorption isotherms, etc. were measured and compared each other in details. This research demonstrates that the organosilanetriol is a good modifier applicable for the surface modification of inorganic oxide particles using a low amount of modifier on the basis of oxide particles used.

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  Cite this article

[IEEE Style]

J. Lee, J. S. Han, B. R. Yoo, "Facile Modification of Surface of Silica Particles with Organosilanepolyol and Their Characterization," Bulletin of the Korean Chemical Society, vol. 34, no. 12, pp. 3805-3810, 2013. DOI: 10.5012/bkcs.2013.34.12.3805.

[ACM Style]

Joongseok Lee, Joon Soo Han, and Bok Ryul Yoo. 2013. Facile Modification of Surface of Silica Particles with Organosilanepolyol and Their Characterization. Bulletin of the Korean Chemical Society, 34, 12, (2013), 3805-3810. DOI: 10.5012/bkcs.2013.34.12.3805.

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ISSN(Print) 0253-2964
ISSN(Online) 1229-5949