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

Giuseppe Filardo, Onofrio Scialdone, Liborio Ivano Costa, Alessandro Galia, 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
RivistaDefault journal
Volume6
Stato di pubblicazionePublished - 2012

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Carbon Dioxide
Copolymerization
Carbon dioxide
Polymers
Kinetics
Monomers
Carbon Monoxide
Free radicals
Chain length
Kinetic parameters
Free Radicals
Polymerization
Chemical analysis
1,1-difluoroethylene

All Science Journal Classification (ASJC) codes

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

Cita questo

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title = "Copolymerization of VDF and HFP in Supercritical Carbon Dioxide: A Robust Approach for Modeling Precipitation and Dispersion Kinetics",
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. {\circledC} 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.",
author = "Giuseppe Filardo and Onofrio Scialdone and Costa, {Liborio Ivano} and Alessandro Galia and Costa, {Liborio I.} and Giuseppe Storti and Massimo Morbidelli and Loredana Ferro",
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TY - JOUR

T1 - Copolymerization of VDF and HFP in Supercritical Carbon Dioxide: A Robust Approach for Modeling Precipitation and Dispersion Kinetics

AU - Filardo, Giuseppe

AU - Scialdone, Onofrio

AU - Costa, Liborio Ivano

AU - Galia, Alessandro

AU - Costa, Liborio I.

AU - Storti, Giuseppe

AU - Morbidelli, Massimo

AU - Ferro, Loredana

PY - 2012

Y1 - 2012

N2 - 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.

AB - 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.

UR - http://hdl.handle.net/10447/76595

M3 - Article

VL - 6

SP - 24

EP - 44

JO - Default journal

JF - Default journal

ER -