pH-responsive aqueous foams stabilized by ionizable latex particles

被引：111

作者：

Binks, Bernard P. ^{[1
]}

Murakami, Ryo

Armes, Steven P.

Fujii, Syuji

Schmid, Andreas

机构：

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

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

[3] Osaka Inst Technol, Dept Appl Chem, Asahi Ku, Osaka 5358585, Japan

来源：

LANGMUIR | 2007年 / 23卷 / 17期

基金：

英国工程与自然科学研究理事会;

关键词：

D O I：

10.1021/la700444a

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We have designed a type of colloidal particle whose surface characteristics are sensitive to the pH of the aqueous phase in which they are dispersed. Particles of polystyrene latex stabilized by poly(acrylic acid) can act as stabilizers of aqueous foams by adsorbing at the air-water surface. Foams can be prepared and stabilized only at pH values below the isoelectric point where particles are either uncharged and flocculated or acquire a positive charge. At high pH where particles are anionic, no foam forms. This influence of pH on foarnability and stability applies to both pH-dependent and pH-responsive systems.

引用

收藏

页码：8691 / 8694

页数：4

相关论文

共 19 条

[1] Foam superstabilization by polymer microrods [J].

Alargova, RG ;

Warhadpande, DS ;

Paunov, VN ;

Velev, OD .

LANGMUIR, 2004, 20 (24) :10371-10374

[2]

Binks B.P., 2006, COLLOIDAL PARTICLES, DOI DOI 10.1017/CBO9780511536670.009

[3] Phase inversion of particle-stabilized materials from foams to dry water [J].

Binks, Bernard P. ;

Murakami, Ryo .

NATURE MATERIALS, 2006, 5 (11) :865-869

[4] Effects of pH and salt concentration on oil-in-water emulsions stabilized solely by nanocomposite microgel particles [J].

Binks, BP ;

Murakami, R ;

Armes, SP ;

Fujii, S .

LANGMUIR, 2006, 22 (05) :2050-2057

[5] Inversion of emulsions stabilized solely by ionizable nanoparticles [J].

Binks, BP ;

Rodrigues, JA .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2005, 44 (03) :441-444

[6] Aqueous foams stabilized solely by silica nanoparticles [J].

Binks, BP ;

Horozov, TS .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2005, 44 (24) :3722-3725

[7] Three-dimensional opal-like silica foams [J].

Carn, Florent ;

Saadaoui, Hassan ;

Masse, Pascal ;

Ravaine, Serge ;

Julian-Lopez, Beatriz ;

Sanchez, Clement ;

Deleuze, Herve ;

Talham, Daniel R. ;

Backov, Renal .

LANGMUIR, 2006, 22 (12) :5469-5475

[8] Syntheses of shell cross-linked micelles using acidic ABC triblock copolymers and their application as pH-responsive particulate emulsifiers [J].

Fujii, S ;

Cai, YL ;

Weaver, JVM ;

Armes, SP .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2005, 127 (20) :7304-7305

[9] Long-range structural order, Moire patterns, and iridescence in latex-stabilized foams [J].

Fujii, Syuji ;

Ryan, Anthony J. ;

Armes, Steven P. .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2006, 128 (24) :7882-7886

[10] Disjoining pressures zeta potentials and surface tensions of aqueous non-ionic surfactant/electrolyte solutions: theory and comparison to experiment [J].

Karraker, KA ;

Radke, CJ .

ADVANCES IN COLLOID AND INTERFACE SCIENCE, 2002, 96 (1-3) :231-264