RT Journal Article
T1 Gas transport properties of polypropylene/clay composite membranes
A1 García Villaluenga, Juan Pedro
A1 Khayet Souhaimi, Mohamed
A1 Lopez Manchado, M. A.
A1 Valentin, J. L.
A1 Seoane Rodríguez, Benjamín
A1 Mengual Cabezón, Juan Ignacio
AB Polypropylene 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 the temperature range 25-65 degrees C. Physical properties of polypropylene membranes were investigated using X-ray diffraction, thermogravimetric analyser, tensile testing and differential scanning calorimetry. The results showed that the filled membranes exhibit lower gas permeability compared to the unfilled polypropylene membrane. For helium, a reduced diffusivity is mainly responsible for the reduction in the permeability, in contrast, for nitrogen and oxygen, both diffusivity and solubility were reduced by the presence of fillers. The X-ray diffraction spectra showed that the incorporation of the unmodified and modified clay did not affect the crystallographic nature of polypropylene.
PB Elsevier
SN 0014-3057
YR 2007
FD 2007-04
LK https://hdl.handle.net/20.500.14352/50989
UL https://hdl.handle.net/20.500.14352/50989
LA eng
NO © 2007 Elsevier Ltd. The authors of this study gratefully acknowledge the financial support of the Ministry of Science and Technology (MCYT, Spain) through its project No. PPQ2003-03299 and MAT 2004-00825. Dr. López Manchado also acknowledges the concession of a Ramón & Cajal contract from the MCYT.
NO Ministry of Science and Technology (MCYT, Spain)
DS Docta Complutense
RD 7 abr 2025