A Method of Controlling Dispersity by Monomer Feeding Protocol and Forced Gelation in Nongelling Step-Growth Branched Polymerization Systems

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Abstract

Changes in dispersity of step-growth linear polymer were calculated for systems where monomer was added to polymerization reactor in portions, each after the previous ones reached certain conversion or after predetermined time. For step-growth branching polymerization involving di- and trifunctional monomers used in the ratios that do not lead to gelation it was shown that the monomer mixtures can be forced to gel, when they are introduced to the reactor in several portions.

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