Mathematical Modeling of Batch Emulsion Copolymerization Processes

Casella, Esleide Lopes; Araujo, Odair; Giudici, Reinaldo

doi:10.1081/pre-120026379

Cited by 13 publications

(23 citation statements)

References 30 publications

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“…In addition, a sensitivity analysis has shown that these parameters play an important role in the model predictions. A similar procedure has been adopted in the literature [4,5,22,23]. Tab.…”

Section: Methodsmentioning

confidence: 96%

“…Appropriate weights are selected for conversion and for particle size in order to compensate for the orders of magnitude and experimental errors of measurement of these two variables. These coefficients were chosen as adjustable parameters because either their values significantly depend on the specific system and/or on the model employed, or only few attempts have been made to measure some of these quantities independently [22]. In addition, a sensitivity analysis has shown that these parameters play an important role in the model predictions.…”

Section: Methodsmentioning

confidence: 99%

“…In these equations, R pi is the polymerization rate of the comonomer i (VA = 1 and BA = 2), r is the absorption rate of radicals into the particles [22], and k tp is the termination rate constant in the particles [22]. The coefficient, c, depends on the magnitudes of r, k des , and k tp [22].…”

Section: Modelmentioning

confidence: 98%

“…The coefficient, c, depends on the magnitudes of r, k des , and k tp [22]. Quantities with the subscript e (I e , W e , E e , N 1e , N 2e , P e , P 1e , N pe ) account for the possibility of a semi-continuous operation and represent the feed flow contribution -they are set equal to zero when modeling batch systems.…”

Section: Modelmentioning

confidence: 99%

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Modeling Vinyl Acetate and n‐Butyl Acrylate Emulsion Copolymerization Process

2010

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This work presents a mathematical model for the vinyl acetate and n-butyl acrylate emulsion copolymerization process in batch reactors. The model is able to explain the effects of simultaneous changes in emulsifier concentration, initiator concentration, monomer-to-water ratio, and monomer feed composition on monomer conversion, copolymer composition and, to lesser extent, average particle size evolution histories. The main features of the system, such as the increase in the rate of polymerization as temperature, emulsifier, and initiator concentrations increase are correctly represented by the model. The model accounts for the basic features of the process and may be useful for practical applications, despite its simplicity and a reduced number of adjustable parameters.

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Section: Methodsmentioning

confidence: 96%

Section: Methodsmentioning

confidence: 99%

Section: Modelmentioning

confidence: 98%

Section: Modelmentioning

confidence: 99%

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Modeling Vinyl Acetate and n‐Butyl Acrylate Emulsion Copolymerization Process

2010

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“…Estes parâmetros também podem também sofrer alteração em relação à temperatura do processo, pois influenciam diretamente a taxa de captura de radicais pelas partículas e pelas micelas (CASELLA, ARAUJO e GIUDICI, 2003). Este fenômeno provém do fato de que o acrilato de butila tem a sua taxa de terminação alterada dependo das condições operacionais.…”

Section: Experimentos (Araújo 1997)unclassified

Modelagem matemática de copolimerização em emulsão de acrilato de butila e estireno para determinação dos valores médios de peso molecular e distribuição de tamanho de partículas.

Pereira¹

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Batch and Semicontinuous Styrene–Butadiene Emulsion Copolymerization Reactions

Filho

Araujo²,

Giudici

et al. 2006

Macromolecular Symposia

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In this work an experimental and simulation study of batch and semicontinuous styrene/butadiene emulsion copolymerization process was developed. The mathematical model combines the classical emulsion copolymerization equations, with mass balances, partitioning of components among all liquid phases, micellar and homogenous nucleation mechanisms and mass transfer equations between liquid and gaseous phases. Simulation results show good agreement with experimental measurements of conversion, average particle diameter and pressure.

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Mathematical Modeling of Batch Emulsion Copolymerization Processes

Cited by 13 publications

References 30 publications

Modeling Vinyl Acetate and n‐Butyl Acrylate Emulsion Copolymerization Process

Modeling Vinyl Acetate and n‐Butyl Acrylate Emulsion Copolymerization Process

Modelagem matemática de copolimerização em emulsão de acrilato de butila e estireno para determinação dos valores médios de peso molecular e distribuição de tamanho de partículas.

Batch and Semicontinuous Styrene–Butadiene Emulsion Copolymerization Reactions

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