Preparation of Poly(Vinyl Acetate) in the Presence of Supercritical Carbon Dioxide 


Vol. 12,  No. 4, pp. 191-197, Dec.  2006


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  Abstract

Polymerization in supercritical carbon dioxide has been getting attention since it is easier to separate the remaining reactants from product polymer and since it is a cleaner process that produces neither wastewater nor air pollutants, compared to the conventional polymerization processes. In this study, poly(vinyl acetate) (PVAc) that is necessary in producing poly(vinyl alcohol) (PVA) with a lot of industrial applications was manufactured in the presence of supercritical carbon dioxide for the second time in the world. A poly(dimethylsiloxane)(PDMS)-derivative surfactant and three initiators were employed in the polymerization of vinyl acetate (VAc) at 338.15 K and 34.5 MPa. Investigation was carried out to find out the effect of the amounts and types of initiators and sufactants as well as the effect of reaction time on the yield and the molecular weight of PVAc. The weight average molecular weight (Mw) of PVAc was in the range of 60,000 ~ 140,000 g/mol, and the number average molecular weight was in the range of 30,000 ~ 70,000 g/mol. The yield of PVAc was spread over 10 ~ 80%, based on the amount of VAc monomer.

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  Cite this article

[IEEE Style]

P. SM, N. SK, L. WS, S. JJ, "Preparation of Poly(Vinyl Acetate) in the Presence of Supercritical Carbon Dioxide," Clean Technology, vol. 12, no. 4, pp. 191-197, 2006. DOI: .

[ACM Style]

Paek SM, Noh SK, Lyoo WS, and Shim JJ. 2006. Preparation of Poly(Vinyl Acetate) in the Presence of Supercritical Carbon Dioxide. Clean Technology, 12, 4, (2006), 191-197. DOI: .

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