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

• Tipo: Artigo em Revista Científica Internacional
• Data: 2013

Autores

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

Revista

Título: Macromolecular Reaction Engineering

Vol. 8 Nº 4

Páginas: 282-294

ISSN: 1862-832X

Editora: Wiley-Blackwell

Indexação

ISI Proceedings

ISI Web of Science

Scopus

INSPEC

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Engenharia química

CORDIS: Ciências Tecnológicas > Engenharia > Engenharia química

Projetos Associados

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

Outras Informações

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).

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Notas: Article first published online: 11 JUL 2013

Nº de páginas: 13