Abstract
AbstractFree‐radical acrylic homo‐ and copolymerization kinetics are reviewed, focusing on secondary reactions that impact the polymerization rate and polymer molecular weight (MW) under industrially‐relevant synthesis conditions. Dependent on the monomer type (acrylate, methacrylate, styrene), mechanisms that must be considered include chain‐end depropagation, monomer self‐initiation, formation and reaction of midchain radicals, and incorporation of macromonomers formed by β‐scission of midchain radicals. The relative importance of these reactions varies with temperature and, for copolymerization, monomer composition. A comprehensive treatment of these complexities has been completed for polymerizations conducted up to 180 °C, but further work is required to extend the applicability of the model to even higher temperatures.
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