Shear-induced coagulation kinetics of semibatch seeded emulsion polymerization

A kinetic model has been developed to simulate the shear-induced coagulation process during semibatch seeded emulsion polymerization of acrylic monomers. DLVO theory was used to calculate the potential energy barrier against coagulation of the latex particles. The coagulation rate constant was postu...

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Bibliographic Details
Published inChemical engineering science Vol. 51; no. 7; pp. 1079 - 1087
Main Authors Chern, C.S., Kuo, Y.N.
Format Journal Article
LanguageEnglish
Published Oxford Elsevier Ltd 1996
Elsevier
Subjects
Applied sciences
Copolymerization
Exact sciences and technology
Organic polymers
Physicochemistry of polymers
Preparation, kinetics, thermodynamics, mechanism and catalysts
Kinetic model
Experimental test
Emulsion copolymerization
Coagulation
Theoretical study
Radical copolymerization
Methyl methacrylate copolymer
Seeded polymerization
Butyl acrylate copolymer
Semicontinuous
Latex
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Summary:A kinetic model has been developed to simulate the shear-induced coagulation process during semibatch seeded emulsion polymerization of acrylic monomers. DLVO theory was used to calculate the potential energy barrier against coagulation of the latex particles. The coagulation rate constant was postulated to be proportional to an exponential function of the relatively mean free path length between two particles. Experimental data available in the literature were used to evaluate the proposed model. Agreement between the model predictions and experimental data was good. The model was then used to study the effects of important reaction parameters (such as the total solids content, seed particle size and concentration, initiator concentration, and surfactant feed profile) on the stability of the emulsion polymer produced in a semibatch reactor.
ISSN:0009-2509
1873-4405
DOI:10.1016/S0009-2509(96)80007-8