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Block copolymer derived membranes for sustained carbon dioxide − methane separations / Sarah E. Querelle in Industrial & engineering chemistry research, Vol. 49 N° 23 (Décembre 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 23 (Décembre 2010) . - pp. 12051–12059 Titre : Block copolymer derived membranes for sustained carbon dioxide − methane separations Type de document : texte imprimé Auteurs : Sarah E. Querelle, Auteur ; Chen, Liang, Auteur ; Marc A. Hillmyer, Auteur Année de publication : 2011 Article en page(s) : pp. 12051–12059 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Polymer Résumé : Using a reactive block polymer precursor, membranes with a bicontinuous nanostructure containing a poly((N,N-dimethylamino)ethyl methacrylate) phase within a cross-linked poly(cyclooctene) framework were formed. These membranes were evaluated for their CO2 selectivity over CH4. Low pressure experiments demonstrated that the CO2 and CH4 permeabilities remain the same with pure and mixed gas feeds. This shows that the membranes are able to maintain their selectivity for CO2. This selectivity was only slightly decreased at moderate temperature (35 °C) and higher pressures (up to 40 bar) using a 50/50 CO2/CH4 mixed gas feed. The bicontinuous block polymer membranes resist the plasticization effect by using a cross-linked phase to sustain the properties of the selective block, and not by changing chain mobility through new chemistry. These bicontinuous block polymer membranes may be valuable for CO2 removal from natural gas streams. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie100461k [article] Block copolymer derived membranes for sustained carbon dioxide − methane separations [texte imprimé] / Sarah E. Querelle, Auteur ; Chen, Liang, Auteur ; Marc A. Hillmyer, Auteur . - 2011 . - pp. 12051–12059. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 23 (Décembre 2010) . - pp. 12051–12059 Mots-clés : Polymer Résumé : Using a reactive block polymer precursor, membranes with a bicontinuous nanostructure containing a poly((N,N-dimethylamino)ethyl methacrylate) phase within a cross-linked poly(cyclooctene) framework were formed. These membranes were evaluated for their CO2 selectivity over CH4. Low pressure experiments demonstrated that the CO2 and CH4 permeabilities remain the same with pure and mixed gas feeds. This shows that the membranes are able to maintain their selectivity for CO2. This selectivity was only slightly decreased at moderate temperature (35 °C) and higher pressures (up to 40 bar) using a 50/50 CO2/CH4 mixed gas feed. The bicontinuous block polymer membranes resist the plasticization effect by using a cross-linked phase to sustain the properties of the selective block, and not by changing chain mobility through new chemistry. These bicontinuous block polymer membranes may be valuable for CO2 removal from natural gas streams. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie100461k