Modeling of the Free-Radical Copolymerization Kinetics with Cross Linking of Vinyl/Divinyl Monomers in Supercritical Carbon Dioxide

A mathematical model for free-radical copolymerization kinetics with cross linking of vinyl/divinyl monomers in carbon dioxide at supercritical conditions was developed. The copolymerization of styrene and divinylbenzene is analyzed as a case study. The effects of the kinetic and physical parameters...

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Bibliographic Details
Published inIndustrial & engineering chemistry research Vol. 44; no. 8; pp. 2823 - 2844
Main Authors Quintero-Ortega, Iraís A, Vivaldo-Lima, Eduardo, Luna-Bárcenas, Gabriel, Alvarado, Juan F. J, Louvier-Hernández, José F, Sanchez, Isaac C
Format Journal Article
LanguageEnglish
Published American Chemical Society 13.04.2005
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Summary:A mathematical model for free-radical copolymerization kinetics with cross linking of vinyl/divinyl monomers in carbon dioxide at supercritical conditions was developed. The copolymerization of styrene and divinylbenzene is analyzed as a case study. The effects of the kinetic and physical parameters on monomer conversion, molecular-weight development, copolymer composition, appearance of the gelation point, gel fraction, and average cross-link density are studied. Model predictions show the expected trends, although the system is quite sensitive to pressure, which provides an interesting and promising way to tailor some of the polymer properties.
Bibliography:istex:EEAF669A9D67C3735C8633E419B4A8499D3EF49F
ark:/67375/TPS-P4X5TSGV-T
ISSN:0888-5885
1520-5045
DOI:10.1021/ie048922o