caa a22 4500 463235304 CHVBK 20180405153254.0 cr unu---uuuuu 170326e20070801xx s 000 0 eng 10.1007/s10404-006-0130-7 doi (NATIONALLICENCE)springer-10.1007/s10404-006-0130-7 Free radical polymerization in multilaminated microreactors: 2D and 3D multiphysics CFD modeling [Elektronische Daten] [Christophe Serra, Guy Schlatter, Nicolas Sary, Friedhelm Schönfeld, Georges Hadziioannou] This paper investigates the modeling of styrene free radical polymerization in two different types of microreactor. A multiphysics model which simultaneously takes into account the hydrodynamics, thermal and mass transfer (convection, diffusion and chemical reaction) is proposed. The set of partial differential equations resulting from the model is solved with the help of the finite elements method either in a 2D or a 3D approach. The different modeled microreactors are on one hand an interdigital multilamination microreactor with a large focusing section, and on the other hand a simple T-junction followed by a straight tube with three different radii. The results are expressed in terms of reactor temperature, polydispersity index, number-average degree of polymerization and monomer conversion for different values of the chemical species diffusion coefficient. It was found that the 2D approach gives the same results as the 3D approach but allows to dramatically reduce the computing time. Despite the heat released by the polymerization reaction, it was found that the thermal transfer in such microfluidic devices is high enough to ensure isothermal conditions. Concerning the polydispersity index, the range of diffusion coefficients over which the polydispersity index can be maintained close to the theoretical value for ideal conditions increases as the tube reactor radius decreases. The interdigital multilamination microreactor was found to act as a tubular reactor of 0.78mm ID but with a shorter length. This underlines that the use of microfluidic devices can lead to a better control of polymerization reactions. Springer-Verlag, 2006 Numerical simulation nationallicence Free radical polymerization nationallicence Microreactor nationallicence Modeling nationallicence Serra Christophe Laboratoire d'Ingénierie des Polymères pour les Hautes Technologies, CNRS UMR 7165, ECPM—ULP Strasbourg, 25 rue Becquerel, 67087, Strasbourg Cedex 2, France aut Schlatter Guy Laboratoire d'Ingénierie des Polymères pour les Hautes Technologies, CNRS UMR 7165, ECPM—ULP Strasbourg, 25 rue Becquerel, 67087, Strasbourg Cedex 2, France aut Sary Nicolas Laboratoire d'Ingénierie des Polymères pour les Hautes Technologies, CNRS UMR 7165, ECPM—ULP Strasbourg, 25 rue Becquerel, 67087, Strasbourg Cedex 2, France aut Schönfeld Friedhelm Institut für Mikrotechnik Mainz GmbH, Carl-Zeiss-Str. 18-20, 55129, Mainz, Germany aut Hadziioannou Georges Laboratoire d'Ingénierie des Polymères pour les Hautes Technologies, CNRS UMR 7165, ECPM—ULP Strasbourg, 25 rue Becquerel, 67087, Strasbourg Cedex 2, France aut Microfluidics and Nanofluidics Springer-Verlag 3/4(2007-08-01), 451-461 1613-4982 3:4<451 2007 3 10404 https://doi.org/10.1007/s10404-006-0130-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10404-006-0130-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Serra Christophe Laboratoire d'Ingénierie des Polymères pour les Hautes Technologies, CNRS UMR 7165, ECPM—ULP Strasbourg, 25 rue Becquerel, 67087, Strasbourg Cedex 2, France aut NATIONALLICENCE 700 1- Schlatter Guy Laboratoire d'Ingénierie des Polymères pour les Hautes Technologies, CNRS UMR 7165, ECPM—ULP Strasbourg, 25 rue Becquerel, 67087, Strasbourg Cedex 2, France aut NATIONALLICENCE 700 1- Sary Nicolas Laboratoire d'Ingénierie des Polymères pour les Hautes Technologies, CNRS UMR 7165, ECPM—ULP Strasbourg, 25 rue Becquerel, 67087, Strasbourg Cedex 2, France aut NATIONALLICENCE 700 1- Schönfeld Friedhelm Institut für Mikrotechnik Mainz GmbH, Carl-Zeiss-Str. 18-20, 55129, Mainz, Germany aut NATIONALLICENCE 700 1- Hadziioannou Georges Laboratoire d'Ingénierie des Polymères pour les Hautes Technologies, CNRS UMR 7165, ECPM—ULP Strasbourg, 25 rue Becquerel, 67087, Strasbourg Cedex 2, France aut NATIONALLICENCE 773 0- Microfluidics and Nanofluidics Springer-Verlag 3/4(2007-08-01), 451-461 1613-4982 3:4<451 2007 3 10404 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer