Effect Factors on the Preparation of Polystyrene Microspheres by Emulsifier-Free Emulsion Polymerization

Emulsifier-free emulsion polymerization is a technique derived from conventional emulsion polymerization in which polymerization is carried out in the absence of emulsifiers. This technique is useful for the preparation of polymer colloids with narrow particle size distributions and well defined surface properties. Emulsifier-free emulsion polymerization eliminates the disadvantages of conventional emulsion polymerizations stemming from the use of emulsifiers, e.g. impurities in products caused by residual emulsifier and poor water-resistance of films induced by polymer latex.