Documents disponibles écrits par cet auteur

Poly(tetrafluoroethylene) sputtered polypropylene membranes for carbon dioxide separation in membrane gas absorption / Julianna A. Franco in Industrial & engineering chemistry research, Vol. 50 N° 7 (Avril 2011) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 50 N° 7 (Avril 2011) . - pp. 4011–4020 Titre : Poly(tetrafluoroethylene) sputtered polypropylene membranes for carbon dioxide separation in membrane gas absorption Type de document : texte imprimé Auteurs : Julianna A. Franco, Auteur ; Sandra E. Kentish, Auteur ; Jilska M. Perera, Auteur Année de publication : 2011 Article en page(s) : pp. 4011–4020 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Dioxide  Gas  Absorption Résumé : This work presents a study of the use of polypropylene (PP) membranes that have been sputtered with poly(tetrafluoroethylene) (PTFE) in a radio frequency plasma reactor. Plasma treatment results in the deposition of an ultrathin microporous coating which has a high degree of fluorination and nano- and microscale roughness. The treated membrane maintains similar pore characteristics and a similar thickness to untreated PP, and therefore, it is likely that the treatment film provides a negligible resistance to CO2 mass transfer relative to that of the bulk PP membrane. The absorption results presented in this paper show that the plasma-treated membrane has a comparable or superior performance to that of PTFE for CO2 mass transfer into monoethanolamine solvent. A flat sheet membrane configuration is used to test the properties of the material and to show that the treated membrane has a comparable CO2 mass-transfer rate to PTFE after 25 days of solvent exposure. Results suggest that all membrane materials are at least partially wetted but that the extent of wetting is lower in the PTFE and plasma-sputtered membrane, relative to untreatred polypropylene. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie102019u [article] Poly(tetrafluoroethylene) sputtered polypropylene membranes for carbon dioxide separation in membrane gas absorption [texte imprimé] / Julianna A. Franco, Auteur ; Sandra E. Kentish, Auteur ; Jilska M. Perera, Auteur . - 2011 . - pp. 4011–4020. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 7 (Avril 2011) . - pp. 4011–4020 Mots-clés : Dioxide  Gas  Absorption Résumé : This work presents a study of the use of polypropylene (PP) membranes that have been sputtered with poly(tetrafluoroethylene) (PTFE) in a radio frequency plasma reactor. Plasma treatment results in the deposition of an ultrathin microporous coating which has a high degree of fluorination and nano- and microscale roughness. The treated membrane maintains similar pore characteristics and a similar thickness to untreated PP, and therefore, it is likely that the treatment film provides a negligible resistance to CO2 mass transfer relative to that of the bulk PP membrane. The absorption results presented in this paper show that the plasma-treated membrane has a comparable or superior performance to that of PTFE for CO2 mass transfer into monoethanolamine solvent. A flat sheet membrane configuration is used to test the properties of the material and to show that the treated membrane has a comparable CO2 mass-transfer rate to PTFE after 25 days of solvent exposure. Results suggest that all membrane materials are at least partially wetted but that the extent of wetting is lower in the PTFE and plasma-sputtered membrane, relative to untreatred polypropylene. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie102019u