Modelling the semi-batch vinyl acetate emulsion polymerization in a real-life industrial reactor

A detailed dynamic model of the polymerization reaction of vinyl acetate in a real-life industrial reactor is presented. With the recipe and the operating procedures observed in the factory as inputs, the model predicts with reasonable accuracy the final conversion, the average particle diameter, the solid content and the viscosity. The manual and semi-manual operations, and the decision process followed by the operator, are also modelled in order to replicate closely the process carried out in the factory. The model provides further insight into the reaction kinetics and allows us to make knowledge-based decisions. The model is intended to be used for the optimization of the policy of adding monomer in order to reduce the batch time.

[1]  D. H. Napper,et al.  Polymerization of vinyl acetate in aqueous media. Part I. The kinetic behavior in the absence of added stabilizing agents , 1962 .

[2]  F. D. Hartley.  Graft copolymer formation during the polymerization of vinyl acetate in the presence of polyvinyl alcohol , 1959 .

[3]  P. H. H. Araújo,et al.  Optimization of semicontinuous emulsion polymerization reactions by IDP procedure with variable time intervals , 2003, Comput. Chem. Eng..

[4]  C. Finch.  Polyvinyl alcohol; properties and applications , 1973 .

[5]  F. Schork,et al.  Modeling poly(vinyl alcohol)-stabilized vinyl acetate emulsion polymerization. II. Comparison with experiment , 1993 .

[6]  R. Marchessault,et al.  The solubility and swelling of latex particles , 1965 .

[7]  M. Morbidelli,et al.  A model for the coagulation of polyvinyl acetate particles in emulsion , 2000 .

[8]  S. Kaizerman,et al.  Swelling of latex particles , 1954 .

[9]  Mohamed S. El-Aasser,et al.  Emulsion polymerization and emulsion polymers , 1997 .

[10]  Francis J. Doyle,et al.  Population balance PSD model for emulsion polymerization with steric stabilizers , 2003 .

[11]  R. Gilbert,et al.  Induced decomposition of persulfate by vinyl acetate , 2001 .

[12]  E. Sudoł,et al.  Emulsion polymerization of vinyl acetate using a polymerizable surfactant. III. Mathematical model , 1993 .

[13]  A. Parts,et al.  The decomposition of potassium peroxydisulphate in polymerization systems , 1968 .

[14]  P. H. H. Araújo,et al.  Corrigendum to "Optimization of semicontinuous emulsion polymerization reactions by IDP procedure with variable time intervals" [Comput. Chem. Eng. 27 (2003) 1345-1360]] , 2004, Comput. Chem. Eng..

[15]  Yildirim H. Erbil.  Vinyl Acetate Emulsion Polymerization and Copolymerization with Acrylic Monomers , 2000 .

[16]  Arne H. Traaen.  Some investigations of graft copolymer formation in aqueous solutions of vinyl acetate in the presence of polyvinyl alcohol , 1963 .

[17]  A. E. Woodward,et al.  Vinyl acetate emulsion polymerization , 1958 .

[18]  F. Schork,et al.  Modeling poly(vinyl alcohol)‐stabilized vinyl acetate emulsion polymerization. I. Theory , 1993 .

[19]  Francis J. Doyle,et al.  Modeling of particle size distribution in emulsion co-polymerization: comparison with experimental data and parametric sensitivity studies , 2002 .

[20]  E. Sudoł,et al.  Characterization of grafting in the emulsion polymerization of vinyl acetate using poly(vinyl alcohol) as stabilizer , 2001 .

[21]  S. Carrà,et al.  Grafting and adsorption of poly(vinyl) alcohol in vinyl acetate emulsion polymerization , 2005 .

[22]  P. C. Hiemenz,et al.  Principles of colloid and surface chemistry , 1977 .

[23]  A. S. Dunn,et al.  The polymerization of vinyl acetate in aqueous solution initiated by potassium persulphate at 60°C. , 1965 .