Modeling of the Particle Size Distribution in Emulsion Polymerization

摘要: A mathematical model to predict the evolution of latex particle size distribution in an emulsion polymerization reactor was developed. The framework is based on population balance approach. It general framework, readily expandable incorporate physiochemical phenomena interest reacting system interest. includes such mechanistic details as (1) generation from radicals entering micelles; (2) dependence radical entry mechanism; (3) coupling concentration aqueous phase and phase; (4) determination by into, exit from, termination inside particle; (5) thermodynamic equilibrium between monomer phase. solved efficiently with orthogonal collocation. Dynamic simulations were compared experimental data taken literature for styrene (monomer), potassium persulfate (initiator), sodium dodecyl sulfate (emulsifier). variables considered total number particles formed, duration nucleation period, conversion at end variation volume fraction time, conversion–time curves different monomer, initiator, emulsifier concentrations. Close agreement found data. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci,