Modeling of Network Formation in Nitroxide-Mediated Radical Copolymerization of Vinyl/Divinyl Monomers Using a Multifunctional Polymer Molecule Approach

被引：31

作者：

Hernandez-Ortiz, Julio C. ^{[1
]}

Vivaldo-Lima, Eduardo ^{[1
]}

Penlidis, Alexander ^{[2
]}

机构：

[1] Univ Nacl Autonoma Mexico, Fac Quim, Dept Ingn Quim, Mexico City 04510, DF, Mexico

[2] Univ Waterloo, Dept Chem Engn, Polymer Res Inst, Waterloo, ON N2L 3G1, Canada

来源：

MACROMOLECULAR THEORY AND SIMULATIONS | 2012年 / 21卷 / 05期

关键词：

controlled radical polymerization; crosslinking; gels; kinetics (polym; mathematical modeling; GENERAL KINETIC-ANALYSIS; CROSS-LINKING; STYRENE POLYMERIZATION; POLYACRYLATE NETWORKS; SIZE DISTRIBUTION; DIVINYL MONOMERS; GEL FORMATION; RAFT PROCESS; GELATION; CYCLIZATION;

D O I：

10.1002/mats.201100091

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A mathematical model for the kinetics of copolymerization with crosslinking of vinyl/divinyl monomers in the presence of stable nitroxyl radicals is presented. A reaction scheme considering multifunctional polymer molecules is proposed. The Flory-Stockmayer theory is used for the post-gelation period. Average crosslink and cyclization densities are calculated using two different approaches. Good agreement between predicted profiles and experimental data from our and other groups is observed in all cases. Overall monomer concentration, controller/initiator ratio, and crosslinker initial concentration are found to be the governing factors for the development of average crosslink and cyclization densities and therefore for the homogeneity of the resulting polymer network.

引用

页码：302 / 321

页数：20

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