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Author(s): Miguel A. D. Gonçalves
Virgínia D. Pinto
Rolando C. S. Dias
Mário Rui P. F. N. Costa
Leandro G. Aguiar
Reinaldo Giudici
Title: Gel Formation in Aqueous Suspension Nitroxide-Mediated Radical Co-Polymerization of Styrene/Divinylbenzene
Issue Date: 2013
Abstract: Results from an experimental study concerning gel formation with nitroxide-mediated radical polymerization (NMRP) of styrene (S) and divinylbenzene (DVB) in aqueous suspension are reported. Influence of certain polymerization parameters on the dynamics of network formation was measured, namely the polymerization temperature and initial composition. Soluble polymer formed at different polymerization times was analyzed by size exclusion chromatography (SEC) with refractive index (RI) and multi angle laser light scattering (MALLS) detection. Concentration of pendant double bonds (PDB) was quantified by means of ICl titration and the morphology of the S/DVB particles was inspected by SEM. Incidence of cyclizations was assessed and the improvement of network homogeneity when using NMRP/FRP is discussed.
Subject: Engenharia química, Engenharia química
Chemical engineering, Chemical engineering
Scientific areas: Ciências da engenharia e tecnologias::Engenharia química
Engineering and technology::Chemical engineering
Document Type: Artigo em Revista Científica Internacional
Rights: restrictedAccess
Appears in Collections:FEUP - Artigo em Revista Científica Internacional

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