Rheological evaluation of the influence of polymer concentration and molar mass distribution on the formation and performance of asymmetric gas separation membranes prepared by dry phase inversion (Articolo in rivista)

Type
Label
  • Rheological evaluation of the influence of polymer concentration and molar mass distribution on the formation and performance of asymmetric gas separation membranes prepared by dry phase inversion (Articolo in rivista) (literal)
Anno
  • 2005-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.polymer.2005.10.041 (literal)
Alternative label
  • Jansen, J.C., Macchione, M., Oliviero, C., Mendichi, R., Ranieri, G. A., Drioli, E (2005)
    Rheological evaluation of the influence of polymer concentration and molar mass distribution on the formation and performance of asymmetric gas separation membranes prepared by dry phase inversion
    in Polymer (Guildford)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Jansen, J.C., Macchione, M., Oliviero, C., Mendichi, R., Ranieri, G. A., Drioli, E (literal)
Pagina inizio
  • 11366 (literal)
Pagina fine
  • 11379 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 46 (literal)
Rivista
Note
  • Scopus (literal)
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • a Institute on Membrane Technology, ITM-CNR, Via P. Bucci, Cubo 17/C, 87036 Rende (CS), Italy. b University of Calabria, Department of Chemistry, Via P. Bucci, Cubo 14/D, 87036 Rende (CS), Italy. c Istituto per lo Studio delle Macromolecole (ISMAC-CNR), Via E. Bassini 15, 20133 Milan, Italy (literal)
Titolo
  • Rheological evaluation of the influence of polymer concentration and molar mass distribution on the formation and performance of asymmetric gas separation membranes prepared by dry phase inversion (literal)
Abstract
  • Asymmetric gas separation membranes were prepared by the dry-casting technique from PEEKWC, a modified amorphous glassy poly(ether ether ketone). The phase inversion process and membrane performance were correlated to the properties of the polymer and the casting solution (molar mass, polymer concentration, solution rheology and thermodynamics). It was found that a broad molar mass distribution of the polymer in the casting solution is most favourable for the formation of a highly selective membrane with a dense skin and a porous sub-layer. Thus, membranes with an effective skin thickness of less than 1 mm were obtained, exhibiting a maximum O2/N2 selectivity of 7.2 and a CO2/CH4 selectivity of 39, both significantly higher than in a corresponding thick dense PEEKWC membrane and also comparable to or higher than that of the most commonly used polymers for gas separation membranes. The CO2 and O2 permeance were up to 9.5!10K3 and 1.8!10K3 m3/(m2 h bar) (3.5 and 0.67 GPU), respectively. (literal)
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