Kulkarni, Sneha A. ; Ogale, Satishchandra B. ; Vijayamohanan, Kunjukrishanan P. (2008) Tuning the hydrophobic properties of silica particles by surface silanization using mixed self-assembled monolayers Journal of Colloid and Interface Science, 318 (2). pp. 372-379. ISSN 0021-9797
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Official URL: http://linkinghub.elsevier.com/retrieve/pii/S00219...
Related URL: http://dx.doi.org/10.1016/j.jcis.2007.11.012
Abstract
Here we describe a novel method of preparing hydrophobic silica particles (100-150 nm; water contact angle of dropcasted film ranging from 60°to 168°) by surface functionalization using different alkyltrichlorosilanes. During their preparation, the molecular surface roughness is also concurrently engineered facilitating a change in both the surface chemical composition and the geometrical microstructure to generate hierarchical structures. The water contact angle has been measured on drop-cast film surface. The enhancement in the water contact angle on 3D (curved) SAMs in comparison to that on 2D (planar) surface is discussed using the Cassie-Baxter equation. These silica particles can be utilized for many potential applications including selective adsorbents and catalysts, chromatographic supports and separators in microfluidic devices.
Item Type: | Article |
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Source: | Copyright of this article belongs to Elsevier Science. |
Keywords: | Silica Particles; Alkyltrichlorosilane; Silanization; Superhydrophobicity |
ID Code: | 26921 |
Deposited On: | 08 Dec 2010 13:00 |
Last Modified: | 04 Jul 2012 06:25 |
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