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Termination kinetics of free-radical polymerization in ionic liquids
Authors:Johannes Barth  Gudrun Schmidt-Naake
Affiliation:a Institute for Physical Chemistry, University of Göttingen, Tammannstraße 6, D-37077 Göttingen, Germany
b Institute of Technical Chemistry, Clausthal University of Technology, Erzstraße 18, D-38678 Clausthal-Zellerfeld, Germany
Abstract:Termination rate coefficients, kt, for free-radical polymerization of 15 vol.-% methyl methacrylate (MMA) dissolved in 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)-imide and in 1-butyl-3-methylimidazolium tetrafluoroborate were measured at 10 °C via the single pulse − pulsed laser polymerization − electron paramagnetic resonance (SP-PLP-EPR) technique. Whereas absolute kt in ionic liquid solution is by about one order of magnitude below the associated bulk MMA value, the chain-length dependence of kt is very similar in both liquid environments.
Keywords:Free-radical polymerization kinetics   Ionic liquids   Electron paramagnetic resonance
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