Kinetics of Copolymerization of PEG-Containing Multiacrylates with Acrylic Acid
نویسندگان
چکیده
The compositional dependence of the polymerization kinetics of multiacrylate copolymers with acrylic acid (AA) was examined. The multiacrylates considered were dior triacrylate esters of oligo(ethylene glycol) (OEG). The multiacrylate polymerization rate increased with the OEG chain length in the absence of added AA. This monomer size dependence was due to mobility-related effects on the pendant double-bond reactivity. AA-containing systems exhibited a slight rate enhancement at high conversions, relative to multiacrylate homopolymer formulations, reflecting changes in the fractional concentration of pendant double bonds. These effects were captured in a free volume-based model of the diffusioncontrolled polymerization kinetics.
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