01652nam a2200277Ia 4500003001000000005001700010040000900027245010500036490005700141520071400198650002700912650001900939650002700958650002200985650002501007700001401032700001601046700001901062700002001081700001701101700001501118700002201133700002201155856015601177008004101333MX-MdCICY20260521091119.0  cCICY10aGas separation of 6FDA-6FpDA membranes Effect of the solvent on polymer surfaces and permselectivity0 vJournal of Membrane Science, 293(1-2), p.22-28, 20073 aThe aim of this work has been to analyze how different solvents used in the manufacture of gas separation membranes, based on 6FDA-6FpDA, influence permeability and selectivity. It has been shown that a low boiling point and/or a repulsive interaction between the solvent and the polymer increase both selectivity and permeability for O2/N2 and, specially, for CO2/CH4 gas pairs. These results have been explained in terms of fractional free volume and intersegmental mobility. In particular it has been shown that good solubility of the polymer results in a high glass transition temperature and planar surface as characterised by the fractal dimension of the resulting membranes, obtained from AFM analysis.14aFLUORINATED POLYIMIDES14aGAS SEPARATION14aFRACTIONAL FREE VOLUME14aFRACTAL DIMENSION14aSOLUBILITY PARAMETER12aRecio, R.12aPalacio, L.12aPrádanos, P.12aHernández, A.12aLozano, A.E.12aMarcos, A.12aDe La Campa, J.G:12aDe La Campa, J.G:40uhttps://drive.google.com/file/d/1oZGSIbyYgksBKg91567QSQzbj99Tt7md/view?usp=drivesdkzPara ver el documento ingresa a Google con tu cuenta: @cicy.edu.mx250602s9999    xx |||||s2   |||| ||und|d