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

被引：50

作者：

Lee, Chang Hun ^{[1
]}

Park, Sun Hee ^{[1
]}

Chung, Wonkeun ^{[1
]}

Kim, Joong Yeon ^{[1
]}

Kim, Sung Hyun ^{[1
]}

机构：

[1] Korea Univ, Dept Chem & Biol Engn, Seoul 136701, South Korea

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2011年 / 384卷 / 1-3期

基金：

新加坡国家研究基金会;

关键词：

Silica nanoparticles; Surface functionalized silica particles; Organo-silane compounds; POLYMERIZATION CATALYSTS; CONTROLLED-RELEASE; DELIVERY-SYSTEM; DRUG-DELIVERY; PARTICLES; DEPOSITION; PHASE; SUSPENSIONS; STABILITY; ROUTE;

D O I：

10.1016/j.colsurfa.2011.04.010

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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.

引用

页码：318 / 322

页数：5

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