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

• Type: Article in International Scientific Journal
• Date: 2013

Authors

Leandro G. Aguiar (Author) FEUP; Miguel A. D. Gonçalves (Author) FEUP; Virgínia D. Pinto (Author) FEUP; Rolando C. S. Dias (Author) FEUP; Mário Rui P. F. N. Costa (Author) FEUP; Reinaldo Giudici (Author) Other

Journal

Title: Macromolecular Reaction Engineering

Vol. 8 No. 4

ISSN: 1862-832X

Publisher: Wiley-Blackwell

Indexing

ISI Proceedings

ISI Web of Science

Scopus

INSPEC

Scientific classification

FOS: Engineering and technology > Chemical engineering

CORDIS: Technological sciences > Engineering > Chemical engineering

Associated Projects

LA 20 - PROJECTO ESTRATÉGICO - LA 20 - 2013-2014

Other information

DOI: 10.1002/mren.201300171

Abstract (EN): 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 8C 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 8C as compared to 90 8C, likely an effect of the chain mobility.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 19