Synthesis of polystyrene suspensions in the conditions for obtaining an emulsifier at the interface

  • Dinara Adikanova K.I. Satpaev Kazakh National Technical University, Almaty
  • Gulzhakhan Yeligbayeva K.I. Satpaev Kazakh National Technical University, Almaty, Kazakhstan
  • Erengaip Shaikhutdinov K.I. Satpaev Kazakh National Technical University, Almaty, Kazakhstan
  • Inessa Gritskova M.V. Lomonosov Moscow State University of Fine Chemical Technology, Moscow
Keywords: polymer suspensions, narrow particle size distribution, interface, emulsifier

Abstract

Emulsion polymerization of styrene was investigated using salts of stearic and lauric acids with cations of different metals (K+, Li+, Ba2+, Ca2+, Zn2+) as emulsifiers. Emulsifier was injected in two ways: using prepared salts introduced into the aqueous phase (1) or salts formed at the monomer/water phase boundary at the moment of polymerization (2). The second method of the emulsifier introduction proved to be more effective. In this case, there was a significant reduction in the interfacial tension promoting the intense microemulsification of a monomer. The kinetics of the polymerization was studied by the method of dilatometry. Interfacial tension at the monomer/water phase boundary was measured by stalagmometric method. Sizes of the particles of polymer suspensions were determined by electrophoretic light scattering.

It has been shown that the polystyrene suspension having a narrow particle size distribution and a diameter of 0.2 microns can be obtained using 0.5% of lithium stearate as an emulsifier in the conditions of its synthesis at the phase boundary, with a volume ratio of the monomer/aqueous phase 1:10 and the concentration of the initiator 1%. Monodispersed granules of polystyrene suspensions with a diameter of 0.2 micron are highly promising as carriers of protein cell to create diagnostic kits for various diseases.

References

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Published
2015-08-09
How to Cite
Adikanova, D., Yeligbayeva, G., Shaikhutdinov, E., & Gritskova, I. (2015). Synthesis of polystyrene suspensions in the conditions for obtaining an emulsifier at the interface. Chemical Bulletin of Kazakh National University, 78(2), 84-90. https://doi.org/https://doi.org/10.15328/cb630

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