On the Development and Validation of a Mathematical Model for the Free-Radical Copolymerization Kinetics with Crosslinking of Styrene/Divinylbenzene in Carbon Dioxide at Supercritical Conditions

摘要

A mathematical model for the free-radical copo ymerization kinetics with crosslinking of vinyl/divinyl monomers in carbon dioxide at supercritical conditions is described, and illustrated for styrene/divinylbenzene. Since the polymerization mechanism is not well established, in this first approach to the problem three possible scenarios are considered and studied: (ⅰ) homogeneous solution copolymerization with carbon dioxide as the solvent; (ⅱ) bead suspension copolymerization, and (ⅲ) dispersion copolymerization. Discussion is centered on model development, determination of the polymerization process, and calculation of partition of components among the phases.