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Colloids

Colloids

Children at play often make suspensions such as mixtures of mud and water, flour and water, or a suspension of solid pigments in water known as tempera paint. These suspensions are heterogeneous mixtures composed of relatively large particles that are visible to the naked eye or can be seen with a magnifying glass. They are cloudy, and the suspended particles settle out after mixing. On the other hand, a solution is a homogeneous mixture in which no settling occurs and in which the dissolved...

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Updated: Jul 10, 2025

Preparation of Hollow Polystyrene Particles and Microcapsules by Radical Polymerization of Janus Droplets Consisting of Hydrocarbon and Fluorocarbon Oils

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Published on: January 25, 2018

Fast Interfacial Polymerization for Stabilizing Emulsion Droplets with Polymer Films beyond Emulsifiers.

Xiaodong Lian¹, Yapei Wang¹

¹Department of Chemistry, Renmin University of China, Beijing 100872, P. R. China.

Langmuir : the ACS Journal of Surfaces and Colloids

|November 20, 2023

Summary

Concerns over traditional emulsifiers are driving innovation in emulsion stabilization. This perspective explores emulsifier-free emulsion droplets prepared via fast interfacial polymerization, offering a promising alternative.

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Published on: January 7, 2019

Area of Science:

Materials Science
Colloid and Surface Chemistry

Background:

Traditional emulsion stabilization relies on amphiphilic emulsifiers, raising environmental and health concerns.
The widespread use of these substances necessitates the development of safer, alternative stabilization methods.

Purpose of the Study:

To review traditional emulsion stabilization methods, focusing on steric hindrance.
To introduce and discuss fast interfacial polymerization as a novel strategy for creating stable, emulsifier-free emulsion droplets.
To explore the potential development directions for this new technique.

Main Methods:

Review of established emulsion stabilization techniques.
Introduction to the fast interfacial polymerization method for creating polymer films around emulsion droplets.
Discussion of the mechanism and advantages of this approach.

Main Results:

Outlined three traditional emulsion stabilization methods based on emulsifier types.
Highlighted the steric hindrance mechanism in emulsion stabilization.
Presented fast interfacial polymerization as a viable strategy for emulsifier-free emulsion production.

Conclusions:

Fast interfacial polymerization offers a promising route to stable, emulsifier-free emulsion droplets.
This method has the potential to overcome the limitations associated with traditional amphiphilic emulsifiers.
Further research and development in this area could lead to significant advancements in emulsion technology.