Unexpected Facile Redistribution of Adsorbed Silica Nanoparticles Between Latexes

被引：47

作者：

Balmer, Jennifer A. ^{[1
]}

Mykhaylyk, Oleksandr O. ^{[1
]}

Fairclough, J. Patrick A. ^{[1
]}

Ryan, Anthony J. ^{[1
]}

Armes, Steven P. ^{[1
]}

Murray, Martin W. ^{[2
]}

Murray, Kenneth A. ^{[2
]}

Williams, Neal S. J. ^{[2
]}

机构：

[1] Univ Sheffield, Dept Chem, Sheffield S3 7HF, S Yorkshire, England

[2] AkzoNobel, Slough SL2 5DS, Berks, England

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2010年 / 132卷 / 07期

基金：

英国工程与自然科学研究理事会;

关键词：

COLLOIDAL NANOCOMPOSITES; EMULSION POLYMERIZATION; EFFICIENT SYNTHESIS; PARTICLES; ADSORPTION; MICROGELS;

D O I：

10.1021/ja910139a

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Addition of excess sterically stabilized P2VP latex to a colloidal dispersion of P2VP-silica nanocomposite particles (with silica shells at Full monolayer coverage) leads to the facile redistribution Of the silica nanoparticles such that partial coverage of all the P2VP latex particles is achieved. This silica exchange. which is complete within I h at 20 degrees C as judged by small-angle x-ray scattering, is observed for nanocomposite particles prepared by heterofluocculation, but not for nanocomposite particles prepared by in situ copolymerization. These observations are expected to have important implications for the optimization of nanocomposite formulations in the coatings industry.

引用

页码：2166 / +

页数：5

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