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

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• 作者：Iraí ; s A. Quintero-Ortega ; Eduardo Vivaldo-Lima ; Gabriel Luna-Bá ; rcenas ; Juan F. J. Alvarado ; José ; F. Louvier-Herná ; ndez ; and Isaac C. Sanchez
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2005
• 出版时间：April 13, 2005
• 年：2005
• 卷：44
• 期：8
• 页码：2823 - 2844
• 全文大小：958K
• 年卷期：v.44,no.8(April 13, 2005)
• ISSN：1520-5045

文摘

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 andphysical 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.