Self-assembly of latex particles at droplet interface to prepare monodisperse emulsion droplets

被引：18

作者：

He, Xiaodong ^{[1
]}

Ge, Xuewu ^{[1
]}

Liu, Huarong ^{[1
]}

Zhou, Huaxing ^{[1
]}

Zhang, ZhiCheng ^{[1
]}

机构：

[1] Univ Sci & Technol China, Dept Polymer Sci & Engn, Hefei 230026, Anhui, Peoples R China

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2007年 / 301卷 / 1-3期

基金：

中国国家自然科学基金;

关键词：

self-assembly; latex particles; droplet interface; monodisperse; Pickering emulsion;

D O I：

10.1016/j.colsurfa.2006.12.026

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：

Monodispersed Pickering emulsion droplets were prepared by self-assembling of sulfonated polystyrene (SPS) latex particles at droplet interface. The stability of emulsion was obviously improved by pre-dispersing the latex particles in oil-water two phase and then mixing them into emulsion. For oil-in-water emulsion, the optimal stability was obtained by pre-dispersing 0.33 weight fraction of the latex particles in oil phase initially. Several parameters were considered during the preparation, including sulfonation time of the SPS latex particles, the dispersed percent of the latex particles in oil-water two phases, the pre-dispersion time of water phase dispersate and oil-water volume ratio. When sulfonation time of the latex particles was close to 60 h, the stability of the particles stabilized emulsion droplets was the best. The increase of pre-dispersion time of water phase dispersate and oil-water volume ratio could obviously decrease the dispersity of emulsion droplets. Finally, monodisperse emulsion droplets were obtained with average droplet diameter 7.4 mu m and standard deviation 0.37. The emulsion droplets could re-assemble into ordered array. (C) 2006 Elsevier B.V. All rights reserved.

引用

页码：80 / 84

页数：5

共 22 条

[1] Emulsions stabilised solely by colloidal particles [J].

Aveyard, R ;

Binks, BP ;

Clint, JH .

ADVANCES IN COLLOID AND INTERFACE SCIENCE, 2003, 100 :503-546

[2] Types of phase inversion of silica particle stabilized emulsions containing triglyceride oil [J].

Binks, BP ;

Rodrigues, JA .

LANGMUIR, 2003, 19 (12) :4905-4912

[3] Interfacial structure of solid-stabilised emulsions studied by scanning electron microscopy [J].

Binks, BP ;

Kirkland, M .

PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2002, 4 (15) :3727-3733

[4] Solid wettability from surface energy components: Relevance to pickering emulsions [J].

Binks, BP ;

Clint, JH .

LANGMUIR, 2002, 18 (04) :1270-1273

[5] Pickering emulsions stabilized by monodisperse latex particles: Effects of particle size [J].

Binks, BP ;

Lumsdon, SO .

LANGMUIR, 2001, 17 (15) :4540-4547

[6] Particles as surfactants - similarities and differences [J].

Binks, BP .

CURRENT OPINION IN COLLOID & INTERFACE SCIENCE, 2002, 7 (1-2) :21-41

[7] Colloidal crystallization induced by capillary force [J].

Cong, H ;

Cao, WX .

LANGMUIR, 2003, 19 (20) :8177-8181

[8] Self-assembled structure of nanoparticles at a liquid-liquid interface [J].

Dai, LL ;

Sharma, R ;

Wu, CY .

LANGMUIR, 2005, 21 (07) :2641-2643

[9] Colloidosomes: Selectively permeable capsules composed of colloidal particles [J].

Dinsmore, AD ;

Hsu, MF ;

Nikolaides, MG ;

Marquez, M ;

Bausch, AR ;

Weitz, DA .

SCIENCE, 2002, 298 (5595) :1006-1009

[10] Rapid preparation of crystalline colloidal arrays using a strong electric field dialysis [J].

Dong, J ;

Qian, WP ;

Cao, YX ;

Xiao, XX ;

Xiao, ZD .

JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, 2006, 6 (04) :1009-1013

← 1 2 3 →