Abstract
The free-radical bulk polymerization of lauryl methacrylate (LMA) in the presence of 2,2'-azobisisobutyronitrile (AIBN) has been studied by differential scanning calorimetry (DSC) in dynamic and isothermal modes. The measured heats of reaction Δ H, increased with the concentration of the initiator. The enthalpy of polymerization in the presence of a large excess of AIBN was obtained by extrapolation. At low concentrations of AIBN, a constant heat of polymerization of LMA (−41.7kJ mol −1) was obtained after correcting for both the incomplete conversion to polymer and the decomposition enthalpy of AIBN.
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