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Emulsion copolymerization of styrene and butyl acrylate with high solid contents: experimental study and mathematical modeling of the process in a semi-batch reactor

Grant number: 05/01666-6
Support type:Scholarships in Brazil - Doctorate
Effective date (Start): October 01, 2005
Effective date (End): March 08, 2008
Field of knowledge:Engineering - Chemical Engineering - Industrial Operations and Equipment for Chemical Engineering
Principal researcher:Reinaldo Giudici
Grantee:Giovane Marinangelo
Home Institution: Escola Politécnica (EP). Universidade de São Paulo (USP). São Paulo , SP, Brazil


Semicontinuous process of emulsion copolymerization of styrene and butyl acrylate will be studied to obtain high solids content latexes. Bimodal particle size distribution, which favors the increase of solids content without an excessive increase in latex viscosity and destabilization of the emulsion, can be achieved through the renucleation of a secondary population of particles during the polymerization process. A population balance based mathematical model will be developed to predict the particle size distribution in this process and the model will be used to rationalize the experimental observations as well as to predict the behavior of the process.

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