Utilize este identificador para referenciar este registo: http://hdl.handle.net/10198/9611
Título: Mathematical modeling of NMRP of styrene–divinylbenzene over the pre- and post-gelation periods including cyclization
Autor: Aguiar, Leandro
Gonçalves, Miguel
Pinto, Virgínia
Dias, Rolando
Costa, Mário Rui
Giudici, Reinaldo
Palavras-chave: Crosslinking
Cyclization
Modeling
Networks
NMRP
Data: 2014
Editora: WILEY-VCH
Citação: Aguiar, Leandro ; Gonçalves, Miguel; Pinto, Virgínia; Dias, Rolando; Costa, Mário Rui; Giudici, Reinaldo (2014) - Mathematical modeling of NMRP of styrene–divinylbenzene over the pre- and post-gelation periods including cyclization. Macromolecular Reaction Engineering. 8, p. 295-313
Resumo: 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 °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 °C as compared to 90 °C, likely an effect of the chain mobility.
URI: http://hdl.handle.net/10198/9611
DOI: 10.1002/mren.201300171
Versão do Editor: http://onlinelibrary.wiley.com/doi/10.1002/mren.201300171/abstract
Aparece nas colecções:DTQB - Artigos em Revistas Indexados ao ISI/Scopus

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