Optimization of Synthesis of Expandable Polystyrene by Multi-Stage Initiator Dosing

Derakhshanfard, F.; Vaziri, A.; Fazeli, N.; Heydarinasab, A.

Document Type : Full article

Authors

¹ Department of chemical Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran

² Department of chemical Engineering, Science and Research Branch, Islamic Azad University, P.O. Box 14155/4933, Tehran, Iran

Abstract

Suspension polymerization process is commonly used to produce expandable polystyrene. In the conventional method for producing this polymer, two different initiators are added to the process at two different temperature levels. In the industrial scale, this process is time consuming and difficult to control. A new method (Multi-Stage Initiator Dosing, MID) is proposed, in which, the initiator is dosed into the reactor. In the laboratory and bench scale tests of this new method results in better control of the process, shorter reaction times and better quality of the product. Optimum temperature and dosing intervals are determined. The properties of the prepared samples by MID and conventional methods are compared with each other. According to the results obtained with the implementation of new methods for the production of expandable polystyrene reduce time process and consuming amount of initiator and because the initiator dosing in several stages, the suspension control would be easier. Also absorption rate was higher pentane and grain size better than the conventional.

Keywords

Main Subjects

Polymer Engineering and Technology,

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Iranian Journal of Chemical Engineering(IJChE)

Optimization of Synthesis of Expandable Polystyrene by Multi-Stage Initiator Dosing

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References

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Volume 13, Issue 1 - Serial Number 1
Winter 2016
Pages 20-31

Optimization of Synthesis of Expandable Polystyrene by Multi-Stage Initiator Dosing

References

References

[19] Li, H. Wu, S. and Wu, J. et al.," A facile approach to the fabrication of graphene-based nanocomposites by latex mixing and in situ reduction", Colloid. Polym. Sci., 291 (8), 2279 (2013).

Volume 13, Issue 1 - Serial Number 1Winter 2016Pages 20-31

Volume 13, Issue 1 - Serial Number 1
Winter 2016
Pages 20-31