Stability of emulsions with nonadsorbing polymers

被引：46

作者：

Meller, A ^{[1
]}

Stavans, J ^{[1
]}

机构：

[1] WEIZMANN INST SCI,DEPT PHYS COMPLEX SYST,IL-76100 REHOVOT,ISRAEL

来源：

LANGMUIR | 1996年 / 12卷 / 02期

关键词：

D O I：

10.1021/la950440h

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We present an experimental study of the effects of hydrophilic, nonadsorbing polymers on the stability of monodisperse oil-in-water emulsions. Above some threshold polymer concentration, the chains induce droplet segregation into fluid and solid phases due to the depletion effect. At higher polymer concentrations, polymers induce the formation of gel-like structures of droplets. Phase diagrams of droplet volume fraction versus polymer concentration are presented. At large droplet volume fractions where droplets are deformed, the polymers enhance considerably the stability of the emulsion against droplet coalescence. We compare our results with recent experiments and models of colloid-polymer mixtures.

引用

页码：301 / 304

页数：4

共 23 条

[1] THE ROLE OF FREE SURFACTANT IN DESTABILIZING OIL-IN-WATER EMULSIONS [J].