In
this study, we combined the kinetic measurement and the computational
simulation to build a kinetic model for the hybridization of cobalt-mediated
radical polymerization (CMRP) and atom transfer radical polymerization
(ATRP), which is a novel method for the one-pot synthesis of block
copolymers of less activated monomers and more activated monomers,
such as PVAc-b-PMMA and PVAc-b-PSty.
The rate constants of the two most important reactions for PVAc radical,
the dissociation of PVAc-CoIII(acac)2 and the
deactivation with CuII(PMDETA)Br2, have been
evaluated at 40 °C as 4.99 × 10–3 s–1 and 4.19 × 106 M–1 s–1, respectively. These two kinetic parameters
associated with other rate constants allowed us to build a quantitative
model that can simulate the polymerization behavior observed in the
hybridization of CMRP and ATRP and thus rationalize the mechanism
more precisely.
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