Mathematical Modeling of NMRP of Styrene-Divinylbenzene over the Pre- and Post-Gelation Periods Including Cyclization

被引：18

作者：

Aguiar, Leandro G. ^{[1
]}

Goncalves, Miguel A. D. ^{[2
]}

Pinto, Virginia D. ^{[2
]}

Dias, Rolando C. S. ^{[2
]}

Costa, Mario Rui P. F. N. ^{[3
]}

Giudici, Reinaldo ^{[1
]}

机构：

[1] Univ Sao Paulo, Escola Politecn, Dept Engn Quim, BR-05508010 Sao Paulo, Brazil

[2] LSRE Inst Politecn Braganca, P-5300 Braganca, Portugal

[3] Univ Porto, LSRE Fac Engn, P-4200456 Oporto, Portugal

来源：

MACROMOLECULAR REACTION ENGINEERING | 2014年 / 8卷 / 04期

基金：

巴西圣保罗研究基金会;

关键词：

crosslinking; cyclization; modeling; networks; NMRP; FREE-RADICAL POLYMERIZATION; NUMERICAL FRACTIONATION TECHNIQUE; GENERAL KINETIC-ANALYSIS; SUSPENSION COPOLYMERIZATION; GEL FORMATION; AUTOPOLYMERIZATION; MINIEMULSION; STYRENE/DIVINYLBENZENE; SEMIBATCH; REACTORS;

D O I：

10.1002/mren.201300171

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Nitroxide-mediated polymerization of styrene-divinylbenzene has been modeled using generating functions of length distributions, pseudo-kinetic propagations, and numerical fractionation with the crosslinking rate depending on generation. Cyclization reactions are tackled by balances of sequences, yielding fair predictions of the measured pendant double bond concentration. With reduction in crosslinking, agreement for the experiments at 90 degrees C between predicted and measured weight-average, molecular weight, and weight fraction of gel is observed. A much higher relative crosslinking reactivity is observed at 130 degrees C as compared to 90 degrees C, likely an effect of the chain mobility.

引用

页码：295 / 313

页数：19

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