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Polymerization Kinetics of Ethylene Oxide Methacrylates in Ionic Media

✍ Scribed by Sara Pedrón; Julio Guzmán; Nuria García

Book ID
102484164
Publisher
John Wiley and Sons
Year
2011
Tongue
English
Weight
449 KB
Volume
212
Category
Article
ISSN
1022-1352

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✦ Synopsis

Abstract

The radical polymerization of ethylene oxide (PEGylated) methacrylates in ionic media has been studied. Lithium salts interact with the monomer causing a significant increase in the propagation rate constant, k~p~, and also providing an ionic and highly viscous medium that sharply decreases the termination rate coefficient, k~t~. Both features make the polymerization reactions with lithium salts faster compared to the bulk monomer. The systems are studied by means of FT‐IR spectroscopy to identify the interactions between the monomer and the lithium salt. In addition, an extensive kinetic study by PLP‐SEC has been performed to study the influence of the lithium salt on k~p~ and k~t~ in the polymerization of these monomers. These results are compared to those obtained when ionic liquids are used as polymerization medium.
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