Modeling of Continuous Dispersion Copolymerization of Styrene and Acrylonitrile in a Polyol Medium

Autor: Fernand Pla, Christian Fonteix, H. van der Wal
Přispěvatelé: Laboratoire Réactions et Génie des Procédés (LRGP), Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS), Dow Benelux N.V.
Rok vydání: 2010
Předmět:
Materials science
General Chemical Engineering
Kinetic scheme
Continuous stirred-tank reactor
02 engineering and technology
Algorithme
010402 general chemistry
Milieu dispersé
01 natural sciences
7. Clean energy
Industrial and Manufacturing Engineering
In situ
Styrene
chemistry.chemical_compound
Transfer agent
Polymer chemistry
Copolymer
Bilan matière
[SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering
Greffage
Réacteur parfaitement agité
Polymérisation
technology
industry
and agriculture
Condition opératoire
General Chemistry
Dispersion
021001 nanoscience & nanotechnology
0104 chemical sciences
Cinétique
Polymerization
chemistry
Chemical engineering
Modélisation
Phase continue
Copolymérisation radicalaire
Acrylonitrile
0210 nano-technology
Dispersion (chemistry)
Zdroj: Chemical Engineering and Technology
Chemical Engineering and Technology, Wiley-VCH Verlag, 2010, 33 ((11)), pp. 1859-1876. ⟨10.1002/ceat.201000249⟩
ISSN: 0930-7516
1521-4125
DOI: 10.1002/ceat.201000249
Popis: International audience; Acrylonitrile and styrene radical copolymerization in a dispersed medium has been investigated. Experiments were carried out in a continuous stirred-tank reactor in the presence of a stabilizing agent elaborated in situ during polymerization. The continuous phase was a polyol. The numerous elementary chemical mechanisms concerning the copolymerization as well as synthesis and grafting of the stabilizing agent together with several physical phenomena clearly show the complexity of the process. Using justified assumptions and a simplified kinetic scheme, a tendency model of the process was developed, using mass balances and thermodynamics. Its unknown parameters were identified by use of an evolutionary algorithm and experimental data resulting from an adapted experimental strategy. This model was then validated and allowed to forecast, with an acceptable order of magnitude, the number and weight average molecular weights, monomers and transfer agent conversions, amounts of solids, copolymer composition, amounts of grafted copolymer, and average particle diameters versus the operating conditions.
Databáze: OpenAIRE
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