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Zeolite-based composite PEEK-WC membranes: Gas transport and surface properties
- Source :
-
Microporous & Mesoporous Materials . Oct2008, Vol. 115 Issue 1/2, p67-74. 8p. - Publication Year :
- 2008
-
Abstract
- Abstract: Mixed matrix membranes (MMMs) have been prepared by using different protocols in order to improve the affinity between NaA (LTA) zeolite and a modified polyetheretherketone (PEEK-WC). A terpenic resin has been added to the polymer–zeolite slurry for enhancing the polymer chain flexibility and, consequently, its adhesion with the crystals. Coupling agents such as γ-aminopropyl-diethoxymethyl silane (APDEMS) and diethanolamine (DEA) have been used to modify the zeolite surface. The instrumental analyses showed a relative efficiency of these treatments with respect to the simple dispersion of the inorganic fillers within the polymer matrix. At high zeolite concentration (30wt%), MMMs are characterised by gas transport properties lower than neat polymer-based membrane. DEA-based treatment seems the more encouraging approach also taking into account that as the filler concentration decreases, the occurrence of defects at the interface becomes less significant. [Copyright &y& Elsevier]
- Subjects :
- *ZEOLITES
*POLYMERS
*SILANE compounds
*ANALYTICAL chemistry
Subjects
Details
- Language :
- English
- ISSN :
- 13871811
- Volume :
- 115
- Issue :
- 1/2
- Database :
- Academic Search Index
- Journal :
- Microporous & Mesoporous Materials
- Publication Type :
- Academic Journal
- Accession number :
- 33530902
- Full Text :
- https://doi.org/10.1016/j.micromeso.2008.01.048