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García Villaluenga, Juan Pedro ; Khayet Souhaimi, Mohamed ; Godino Gómez, María Paz ; Seoane Rodríguez, Benjamín ; Mengual Cabezón, Juan Ignacio | Elsevier Science BV | 2005-12The effect of the membrane thickness on the pervaporation separation of methanol and methyl tertiary butyl ether mixtures through membranes was studied. Membranes of a wide range of thicknesses were prepared from two different polymers: cellulos[...]texto impreso
Monge, M. A. ; García Villaluenga, Juan Pedro ; Muñoz, A. ; Leguey, T. ; Pareja, R. | 2002-10-08The annealing effect on coextruded linear low-density polyethylene (LLDPE) films has been investigated by positron annihilation lifetime spectroscopy (PALS). From the continuous positron lifetime distribution found for these films, the size dist[...]texto impreso
Barragán García, Vicenta María ; García Villaluenga, Juan Pedro ; Izquierdo Gil, María Amparo ; Godino Gómez, María Paz ; Seoane Rodríguez, Benjamín ; Ruiz Bauzá, Carlos | Elsevier Science BV | 2008-10-15Liquid permeation and uptake measurements of pure water and methanol were carried out using three commercial cation-exchange membranes: Nafion-117 (perfluorinated polyethylene with pendant ether-linked side chains terminated with sulfonated grou[...]texto impreso
García Villaluenga, Juan Pedro ; Seoane Rodríguez, Benjamín ; Compañ, V. | 1998-10-03The permeability and diffusivity of oxygen, carbon dioxide, nitrogen, and helium have been obtained for a range of linear low density polyethylene (LLDPE) films prepared from the same raw materials but with different processing conditions. The m[...]texto impreso
García Villaluenga, Juan Pedro ; Tabe Mohammadi, A. | 2003-05The dependence of permeance and ideal separation factor on pressure ratio and pressure difference across the membrane was studied for a rubbery and a glassy membrane. The membranes tested included commercially available silicone rubber and polyi[...]texto impreso
Barragán García, Vicenta María ; García Villaluenga, Juan Pedro ; Morales Villarejo, Victor ; Izquierdo Gil, María Amparo | Multidisciplinary Digital Publishing Institute | 2020-06The aim of this work is to apply linear non-equilibrium thermodynamics to study the electrokinetic properties of three cation-exchange membranes of different structures in ethanol-water electrolyte solutions. To this end, liquid uptake and elect[...]texto impreso
Barragán García, Vicenta María ; García Villaluenga, Juan Pedro ; Izquierdo Gil, María Amparo ; Pérez Cordón, Rafael | IOP Publishing | 2016-07This paper presents a novel method for determining the temperature of a radiating body. The experimental method requires only very common instrumentation. It is based on the measurement of the stationary temperature of an object placed at differ[...]texto impreso
García Villaluenga, Juan Pedro ; Somovilla, Pilar ; Barragán García, Vicenta María ; Izquierdo Gil, María Amparo | Elsevier | 2016Liquid uptake and streaming potential have been determined in aqueous sodium chloride solutions for five different commercial sulfonated polymer cation-exchange membranes. The selected membranes have distinct morphologies and electrochemical pro[...]texto impreso
Barragán García, Vicenta María ; García Villaluenga, Juan Pedro ; Godino Gómez, María Paz ; Izquierdo Gil, María Amparo ; Ruiz Bauzá, Carlos ; Seoane Rodríguez, Benjamín | Academic Press Inc Elsevier Science | 2009-05-15Solvent uptake, hydraulic and electroosmotic permeabilities, true cation transport number, effective fixed charge concentration, and limiting current values have been determined in aqueous LiCl solutions for three commercial cation-exchange memb[...]texto impreso
García Villaluenga, Juan Pedro ; Seoane Rodríguez, Benjamín | 2001-12-13In recent years, we have investigated gas-transport phenomena in coextruded linear low-density polyethylene (LLDPE) membranes. For the most part, coextruded LLDPE membranes were investigated because of their excellent mechanical properties, whic[...]texto impreso
Khayet Souhaimi, Mohamed ; García Villaluenga, Juan Pedro ; Valentin, J. L. ; López Manchado, Miguel Ángel ; Mengual Cabezón, Juan Ignacio ; Seoane Rodríguez, Benjamín | Elsevier Ltd. | 2005-11-14The effects of silica and silane modified silica fillers on the pervaporation properties of poly (2,6-dimethyl-1,4-phenylene oxide) (PPO) dense membranes have been studied. Crystallinity, thermal and mechanical properties of unfilled and filled [...]texto impreso
García Villaluenga, Juan Pedro ; Barragán García, Vicenta María ; Izquierdo Gil, María Amparo ; Godino Gómez, María Paz ; Seoane Rodríguez, Benjamín ; Ruiz Bauzá, Carlos | John Wiley & SONS INC | 2009-11-05Liquid permeation measurements of water, methanol, and 2-propanol were carried out using a commercial cation-exchange membrane Nafion-117 (perfluorinated polyethylene with pendant ether-linked side chains terminated with sulfonated groups). The [...]texto impreso
García Villaluenga, Juan Pedro ; Seoane Rodríguez, Benjamín ; Hradil, J. ; Sysel, P. | Elsevier Science BV | 2007-11-15Heterogeneous carbon molecular sieves and hypercrosslinked polystyrene microparticles adsorbent-based membranes with a (ODPA-BIS P) polyimide binder were prepared. The effect of adsorbent particles on the gas transport properties of heterogeneou[...]texto impreso
García Villaluenga, Juan Pedro ; Khayet Souhaimi, Mohamed ; Lopez Manchado, M. A. ; Valentin, J. L. ; Seoane Rodríguez, Benjamín ; Mengual Cabezón, Juan Ignacio | Elsevier | 2007-04Polypropylene membranes modified with natural and organically modified montmorillonite clays were prepared. The permeability, diffusivity and solubility of helium, oxygen and nitrogen were determined for the unfilled and filled membranes over th[...]texto impreso
Micrographs obtained using scanning electron microscopy reveal that the drawing of co-extruded linear low-density polyethylene (LLDPE) films produces numerous changes in their surface. It is necessary to analyse the effect of these changes on ga[...]
