Emulsion Polymerization of Vinyl Acetate and Styrene Monomers in Presence of Polymeric Surfactant

Abstract

Polymeric surfactant was prepared from polyoxyethylene methylether (POE, 66 wt%) and styrene (St, 34 wt%) in the presence of benzoyl peroxide as initiator using a macroradical polymerization technique. Fourier Transform Infrared Spectroscopy (FTIR) and ¹HNMR were used to confirm the formation of graft copolymer. The cloud point for the obtained graft copolymer was found to be 75°C. The stabilizing efficiency of this nonionic copolymer as surfactant was tested in the emulsion polymerization of vinyl acetate and styrene monomers in the presence of potassium persulfate (K₂S₂O₈) as initiator. The rate of polymerization was found to be proportional to the 0.9th and 0.76th power of initiator concentrations, and to the 0.77th and 0.66th power of the surfactant concentrations for vinyl acetate and styrene monomers, respectively. The apparent activation energies were found to be 69.13 and 50.27 kJ/mol for emulsion polymerization of vinyl acetate and styrene, respectively.

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References

1. Guytout, A. and K. Tauer . 1994. Advances in Polymer Science, Vol. 111.

2. Napper, D. H. 1970. J. of Colloid and Interface Science, 32(1).

3. Shinoda, K. , N. Saito and H. Arai . 1971. J. of Colloid and Interface Science, 35(4).

4. Barton, J. and I. Capek . 1994. Radical Polymerization in Disperse Systems, T. J. Kemp and J. E. Kenedy , Eds., Bratislava: Ellis Horwood, Chichester and Veda.

5. Urquiola, M. B. , V. L. Dimonie , E. D. Sudol and M. S. El-Aasser . 1992. J. of Polymer Science, Part A. Polym. Chem., 30:2619-2629.

6. Urquiola, M. B. , V. L. Dimonie , E. D. Sudol and M. S. El-Aasser . 1992. J. of Polymer Science, Part A. Polym. Chem., 30:2631-2644.

7. Piirma, I. and J. R. Lenzotti . 1989. British Polymer J., 21:45-51.

8. J-Luce, M. and R. Gerard . 1995. Polymer Advanced Technologies, 6(7): 497-508.

9. Sela, Y. , S. Magdassi and N. Garti . 1994. Colloids and Surfaces A. Physico-Chemical and Engineering Aspects, 83(2): 134-150.

10.

10. Sela, Y. , N. Garti and S. Magdassi . 1993. J. of Dispersion Science and Technology, 14(2):237-247.

11.

11. Ping-Lin, K. and C. Chaur-Jinn . 1993. J. of Polymer Science, Part A. Polym. Chem., 31(1):99-111.

12.

12. Gary, J. L. and I. Piirma . 1991. J. of Applied Polymer Science, 42(5): 1423-1431.

13.

13. Schott, H. 1995. J. of Colloid and Interface. 173:265-277.

14.

14. Ronald, H. , R. Ottewill , S. Fiederick , A. Waite and W. J. Margaret . 1987. British Polymer J., 19:435-440.

15.

15. Schechman, A. L. 1990. 33rd IUPAC Symp. on Macromolecules, Montreal, Section 2.5.6.

16.

16. Capek, I. 1994. Macromol. Chem. Phys., 195:1137.

17.

17. Capek, I. , M. Mlynarova and J. Barton . 1988. Makromol. Chem., 189:341.

18.

18. Capek, I. , M. Riza and M. Akashi . 1995. Eur. Polym. J., 31:895.

19.

19. Capek, I. 1995. J. Macromol. Sci. Pure and Applied Chemistry, A32:749.

20.

20. Polymer Handbook. 1989. J. Brandrup, E. H. Immergut, 3rd Edn., New York: Wiley

21.

21. Capek, I. and P. Potisk . 1995. Eur. Polym. J., 31:1269.

22.

22. Riza, M. , I. Capek , A. Kishida and M. Akashi . 1993. Angew Makromol. Chem., 206:69.

23.

23. Capek, I. 1994. Polymer J., 26:1154.