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Design of copolymer molecular architecture via design of continuous reactor systems for controlled radical polymerization / Amin Zargar in Industrial & engineering chemistry research, Vol. 48 N° 9 (Mai 2009) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 48 N° 9 (Mai 2009) . - pp. 4245–4253 Titre : Design of copolymer molecular architecture via design of continuous reactor systems for controlled radical polymerization Type de document : texte imprimé Auteurs : Amin Zargar, Auteur ; F. Joseph Schork, Auteur Année de publication : 2009 Article en page(s) : pp. 4245–4253 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Continuous  reactor  trains  Polydispersity  Copolymer Résumé : In controlled radical polymerizations, the lifetime of a growing chain is approximately the residence time in the reactor train. Under these conditions, it is possible to use various continuous reactor trains (CSTRs and PFRs in series) to manipulate the molecular architecture. This work illustrates the design, by iterative simulation, of continuous reactor trains to produce highly specific molecular architectures. In addition to determining the typical parameters of polydispersity, molecular weight, and copolymer composition, the simulation produces information about the sequence structure in the copolymer. Prior work has shown the ability to use moment equations to analyze the sequence structure of batch polymerization and the potential to vary batch reactor conditions to produce copolymers with different sequences from the head to the tail of the copolymer. This work extends the technique of sequence distribution analysis through population balances to continuous reactor trains molecular architectures with specific molecular weight, copolymer composition, and sequence distribution. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie801422w [article] Design of copolymer molecular architecture via design of continuous reactor systems for controlled radical polymerization [texte imprimé] / Amin Zargar, Auteur ; F. Joseph Schork, Auteur . - 2009 . - pp. 4245–4253. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N° 9 (Mai 2009) . - pp. 4245–4253 Mots-clés : Continuous  reactor  trains  Polydispersity  Copolymer Résumé : In controlled radical polymerizations, the lifetime of a growing chain is approximately the residence time in the reactor train. Under these conditions, it is possible to use various continuous reactor trains (CSTRs and PFRs in series) to manipulate the molecular architecture. This work illustrates the design, by iterative simulation, of continuous reactor trains to produce highly specific molecular architectures. In addition to determining the typical parameters of polydispersity, molecular weight, and copolymer composition, the simulation produces information about the sequence structure in the copolymer. Prior work has shown the ability to use moment equations to analyze the sequence structure of batch polymerization and the potential to vary batch reactor conditions to produce copolymers with different sequences from the head to the tail of the copolymer. This work extends the technique of sequence distribution analysis through population balances to continuous reactor trains molecular architectures with specific molecular weight, copolymer composition, and sequence distribution. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie801422w