Development of Cyclic Propagation Kinetics for Modeling the Nitroxide-mediated Radical Copolymerization of Styrene - Divinylbenzene

• 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

Pages: 282-294

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.201300105

Abstract (EN): A kinetic model including the cyclic propagation (cyclization) is proposed for the nitroxide-mediated radical copolymerization of styrene-divinylbenzene. The method involves a balance of sequences of units, which connect a radical center and a pendant double bond present in the same polymer chain. The rate constant for cyclization was considered a function of the sequence length. Good agreement between the model predictions and experimental data for solution and suspension controlled copolymerizations was found. The rate constant of cyclization for the smallest ring (3 monomeric units) was estimated to be 700s(-1) at 90 degrees C, and the activation energy was estimated to be 32500calmol(-1).

Language: English

Type (Professor's evaluation): Scientific

Notes: Article first published online: 11 JUL 2013

No. of pages: 13