Macromolecular Rapid Communications
Macromolecular Rapid Communications
5 years ago

Propagation Kinetics of Isoprene–Glycidyl Methacrylate Copolymerizations Investigated via PLP–SEC

Propagation Kinetics of Isoprene–Glycidyl Methacrylate Copolymerizations Investigated via PLP–SEC
Marco Drache, Florian Brandl, Robin A. Hutchinson, Enrique Saldívar-Guerra, David Contreras-López, Tristan Nentwig, Jan E. S. Schier, Sabine Beuermann
Pulsed-laser polymerization combined with polymer analysis by NMR and size-exclusion chromatography is used to study the radical copolymerization kinetics of isoprene (IP) with glycidyl methacrylate (GMA). The copolymer is characterized by a close-to-alternating microstructure, with the addition of IP leading to a significant decrease in the composition-averaged propagation rate coefficient. A rigorous fitting strategy is developed to fit a mixed penultimate model to the data, with the selectivity of the IP, but not the GMA, macroradical dependent on the penultimate unit. The addition of isoprene (IP) to radical polymerizations of glycidyl methacrylate (GMA) leads a close-to-alternating microstructure and causes a sharp reduction in reaction rate. A rigorous fitting strategy is developed to fit a mixed penultimate model to the data, with the selectivity of monomer addition to an isoprene macroradical dependent on the penultimate unit (PUE).

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1002/marc.201700105

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