RT info:eu-repo/semantics/article
T1 Mixed matrix membranes of 6FDA-6FpDA with surface functionalized γ-alumina particles. An analysis of the improvement of permselectivity for several gas pairs
A1 tena, ALBERTO
K1 Membranes
K1 Polymers
K1 Separation
K1 mixed matrix membranes
K1 alumina
AB Herein, mixed matrix membranes including alumina particles whose surfaces have been differently modified have been made and characterized. The polymeric matrix is a fluorinated polyimide, 6FDA-6FpDA, whereas the inorganic constituent parts are neat, silanized or poly-vinyl-pirrolidone-coated nanometric γ-Al2O3 particles of 40 nm in diameter, which have been added in an approximated percentage of a 12% w/w.All the modified or unmodified added particles lead to similar improvements in the permselectivity of the gas pairs studied. Only in the case of the O2/N2 pair the increase in selectivity for the silanized particles is not as effective as the observed permeability enhancement for the uncoated and PVP-coated particles. In case of CO2/CH4, the 1991 Robeson's upper bond line is overpassed.The characteristics of the permselectivity improvement for the different inorganic particles have been analyzed in terms of the properties of the particle–polymer interfacial properties.
PB Elsevier
YR 2010
FD 2010
LK https://uvadoc.uva.es/handle/10324/66102
UL https://uvadoc.uva.es/handle/10324/66102
LA eng
NO Chemical Engineering Science. 2010 Mar 15;65(6):2227-35.
NO Producción Científica
DS UVaDOC
RD 23-nov-2024