Kinetic Study of Seeded Emulsion Polymerization of Vinyl Acetate

Abstract

Abstract: Aseries of seeded emulsion polymerization of vinyl acetate have been carried out using a dilatometer with a infrared monitor and a computer recording system in the initiator concentration range from 5.030×10^-5mol/Lto 1.002×10^-3mol/L. Due to the polymeriza-tion started from the interval II, the effect of the particle growth on the rate parameters has been avoided. Based on the experiment data of conversion vs time, we got the polymerization rate in quasi-steady state, and then calculated the entry rate coefficient ρ, exit rate coeffi-cient k and k_pn. The results showed that the polymerization rate, ρ, k and k_pn increased lin-early with increasing initiator concentration. Also, k_pn is linear to the polymerization rate.

Key words: Vinyl acetate, Seeded emulsion polymerization, Kinetics, Initiator concentration

CLC Number:

O632.33

TrendMD:

GUAN Rong, Gilbert R. G. . Kinetic Study of Seeded Emulsion Polymerization of Vinyl Acetate[J]. Chem. J. Chinese Universities, 1997, 18(8): 1384.

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Kinetic Study of Seeded Emulsion Polymerization of Vinyl Acetate

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