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oai:uvadoc.uva.es:10324/219002023-03-16T09:12:02Zcom_10324_1157com_10324_931com_10324_894col_10324_1298

Porosimetric characterization of polysulfone ultrafiltration membranes by image analysis and liquid–liquid displacement technique Calvo Díez, José Ignacio Peinador Dávila, René Israel Prádanos del Pico, Pedro Lourdes Bottino, Aldo Comite, Antonio Firpo, Raffaella Hernández Giménez, Antonio Ultrafiltration Pore size distribution Liquid–Liquid Displacement Porosimetry Electron microscopy MolecularWeight Cut-Off Producción Científica Structural and surface properties of two commercial polysulfone ultrafiltration membranes have been evaluated by different techniques. Pore size distributions have been determined by Liquid–Liquid Displacement Porosimetry (LLDP) as well as by image analysis performed onto Field Emission Scanning Electron Microscopy (FESEM) images of the membrane surfaces. Fourier TransformInfrared Spectroscopy (FTIR) has been used to investigate membrane composition, and in particular, to obtain proper information on the presence of an additive within the membrane structure. Porosimetric results obtained by the two independent techniques compared reasonably well and the Molecular Weight Cut Off (MWCO) of the two membranes estimated from LLDP pore size distribution was found to be in good agreement with the nominal values given by manufacturers. 2016-12-22T08:57:13Z 2016-12-22T08:57:13Z 2015 info:eu-repo/semantics/article Desalination 2015, vol. 357, p. 84–92 0011-9164 http://uvadoc.uva.es/handle/10324/21900 10.1016/j.desal.2014.11.012 eng http://www.sciencedirect.com/science/article/pii/S0011916414006031 info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-nd/4.0/ Attribution-NonCommercial-NoDerivatives 4.0 International Elsevier SI