Stimulus-responsive emulsifiers based on nanocomposite microgel particles

被引：287

作者：

Fujii, S

Read, ES

Binks, BP

Armes, SP

机构：

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

[2] Univ Hull, Dept Chem, Surfactant & Colloid Grp, Kingston Upon Hull HU6 7RX, N Humberside, England

来源：

ADVANCED MATERIALS | 2005年 / 17卷 / 08期

基金：

英国工程与自然科学研究理事会;

关键词：

D O I：

10.1002/adma.200401641

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Lightly crosslinked poly(4-vinylpyridine)-silica nanocomposite microgel particles are used to prepare either oil-in-water or water-in-oil "Pickering" emulsions at around pH 8-9. Rapid demulsification occurs below pH 3, since the addition of acid leads to the protonation of 4-vinylpyridine residues which, in turn, impart hydrophilic character to the nanocomposite particles, hence promoting their desorption from the droplet interface (see Figure).

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页码：1014 / +

页数：6

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