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Modeling of Polyurethane Synthesis by Reactive Extrusion by Jean-Pierre Puaux; Philippe Cassagnau; Grigore Bozga; Iosif Nagy is a Engineering article available to read on EtoBox.

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This paper describes a modeling and simulation study for the polyurethane synthesis by bulk copolymerization of dicyclohexylmethane 4,4diisocyanate with a mixture of a polyether diol and 1,4-butane diol, in a co-rotating twin-screw extruder. The process model is based on linear chain growth theory, a kinetic expression previously published in literature and the axial dispersion model, in both the hypothesis of non-segregated and totally segregated fluid structures. The numerical simulations evidenced that the effect of segregation phenomenon appears to be significant, particularly in the evaluation of the product polydispersity. Also, the polymerization process features an important sensitivity of the polymer molecular weight in respect to the inlet monomer molar ratio.

Who reads Modeling of Polyurethane Synthesis by Reactive Extrusion?

Author

Jean-Pierre Puaux; Philippe Cassagnau; Grigore Bozga; Iosif Nagy

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0255-2701)

Published

2006

Language

EN

Field

Engineering (Physical Sciences)