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Kinetics of long‐chain branching in emulsion polymerization
Author(s) -
Mazzotti Marco,
Fiorentino Stefano,
Ghielmi Alessandro,
Morbidelli Massimo,
Storti Giuseppe
Publication year - 1996
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.19961110118
Subject(s) - branching (polymer chemistry) , polymer , monomer , chain transfer , chain (unit) , emulsion polymerization , emulsion , polymer chemistry , molar mass distribution , double bond , kinetic chain length , materials science , kinetics , polymerization , fractionation , transfer agent , chemical engineering , polymer science , chemistry , radical polymerization , organic chemistry , composite material , physics , quantum mechanics , astronomy , engineering
A kinetic model suitable to deal with the case of branched polymers produced in emulsion both in the case of chain transfer to polymer and propagation to terminal double bond is briefly presented and numerically solved through the method of the moments. Thanks to the “numerical fractionation” approach, the whole molecular weight distribution of the polymer is evaluated while accounting for the compartmentalized nature of the system. The results of some illustrative calculations concerning the effects upon the molecular properties of the final polymer of starved semibatch monomer feed policies, addition of a chain transfer agent and propagation to terminal double bond are discussed.