Influence of the Reactive Emulsifier-HPMA on the Properties of the Acrylate Emulsion

Abstract

The acrylate emulsion was prepared via pre-emulsified and semicontinuous seeded emulsion polymerization technology when nonreactive emulsifiers such as sodium dodecyl-benzenesulfonate (DSB) are replaced with reactive emulsifiers such as sodium2-hydroxy-3-(methacryloyloxy)propane-1-sulfonate (HPMAS). Influence of HPMAS on the particle size, water resistance, viscosity, rheology, and stability of the emulsion was studied. Results show that the particle size and the viscosity of the emulsion are increased with the added amount of HPMAS. However, water resistance of film first is increased and then decreased with the increase of the added amount of HPMAS. The water resistance of the film is best when the added amount of HPMAS is 2.0%. The viscosity of the emulsion is increased with the increase of the added amount of HPMAS. Both the mechanical stability and the freezing-thaw stability of the emulsion are improved when DSB is replaced with HPMAS during the course of the emulsion polymerization. The emulsion is of rheological properties of pseudo-plastic fluid and belongs to non-Newtonian fluid.

Keywords:

• Acrylate emulsion
• HPMAS
• polymer synthesis
• properties
• reactive emulsifier
• rheology

Acknowledgements

This work has been supported by the Science and Technology Department of Zhejiang Province under Grant no. 2010C31040. In addition, the financial support of Zhejiang Provincial Natural Science Foundation of China (No. Y4100152) is gratefully acknowledged. The authors are very grateful to all the members of the discussion group for their helpful comments.