Abstract
The kinetics of the free radical polymerization of six isomeric dimethyl phenyl methacrylates, initiated with dilauroyl peroxide, were examined by DSC in the temperature range 323–398 K. It was found that the rates of polymerization depend on the mode of methyl substitutions in the aromatic ring; differences for the enthalpies of polymerization and Arrhenius activation energies were also observed. The differences in reaction rate constants tend to decrease with increasing polymerization temperatures and by extrapolation to higher temperatures vanish almost completely at about 400 K.
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