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Preparation and characterization of surface modified silica nanoparticles with organo-silane compounds

Authors
Lee, Chang HunPark, Sun HeeChung, WonkeunKim, Joong YeonKim, Sung Hyun
Issue Date
5-7월-2011
Publisher
ELSEVIER SCIENCE BV
Keywords
Silica nanoparticles; Surface functionalized silica particles; Organo-silane compounds
Citation
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, v.384, no.1-3, pp.318 - 322
Indexed
SCIE
SCOPUS
Journal Title
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
Volume
384
Number
1-3
Start Page
318
End Page
322
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/112011
DOI
10.1016/j.colsurfa.2011.04.010
ISSN
0927-7757
Abstract
In this study, surface functionalized silica nanoparticles were prepared through a continuous two-step sol-gel process. After the TEOS-derived silica particles were synthesized, silane compounds were added during the second sol-gel process without any filtration or purification processes. The introductions of the organic chains to their surfaces were measured using C-13 solid-state NMR. The effects of the hydrophilicity of the organo-chains on the silica particles were evaluated and analyzed by water contact angle and water wettability tests. The differences of surface charge in the dispersion state were analyzed by measuring the zeta-potential and the variations in the charge were measured as a function of pH. (C) 2011 Elsevier B.V. All rights reserved.
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