Copolymerization of VDF and HFP in Supercritical Carbon Dioxide: A Robust Approach for Modeling Precipitation and Dispersion Kinetics

Liborio Ivano Costa, Onofrio Scialdone, Alessandro Galia, Giuseppe Filardo, Liborio I. Costa, Giuseppe Storti, Massimo Morbidelli, Loredana Ferro

Risultato della ricerca: Article

11 Citazioni (Scopus)

Abstract

A kinetic model is developed for the heterogeneous free-radical copolymerization of vinylidene fluoride and hexafluoropropylene in supercritical CO 2. The model accounts for polymerization in both the dispersed (polymer-rich) phase and in the continuous (polymer-free) supercritical phase, for radical interphase transport, diffusion limitations, and chain-length-dependent termination in the polymer-rich phase. A parameter evaluation strategy is developed and detailed to estimate most of the kinetic parameters a priori while minimizing their evaluation by direct fitting. The resulting model predictions compare favorably with the experimental results of conversion and MWD at varying monomer feed composition, monomer concentration, interphase area, and pressure of the system. © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Lingua originaleEnglish
pagine (da-a)24-44
Numero di pagine21
RivistaMacromolecular Reaction Engineering
Volume6
Stato di pubblicazionePublished - 2012

    Fingerprint

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)
  • Polymers and Plastics

Cita questo