PVDF-MFI mixed matrix membranes as VOCs adsorbers
作者： M. Drobek , A. Figoli , S. Santoro , N. Navascués , J. Motuzas
DOI: 10.1016/J.MICROMESO.2015.01.005
关键词: Zeolite 、 Layer (electronics) 、 Adsorption 、 Porosity 、 Hexane 、 Polymer 、 Composite number 、 Chromatography 、 Materials science 、 Chemical engineering 、 Membrane
摘要: This work focuses on the preparation of porous mixed matrix membranes (MMMs) by non-solvent induced phase separation (NIPS) using poly(vinylidenefluoride) (PVDF) as polymer and nano-sized silicalite-1 (S-1) Ti-silicalite-1 (TS-1) seeds MFI zeolite structure inorganic fillers. These MMMs have been used VOCs adsorbers. Different seed concentrations (up to 22 wt.%) were homogeneously dispersed into polymeric evaluate influence amount zeolites membrane characteristics. In all cases, asymmetric membranes, made up two layers obtained: bottom side exhibited spherulitic structure; whereas, at top side, a smooth layer was observed. With respect neat PVDF hydrophobic character found be improved addition; in particular S-1 nano-seeds. The mechanical properties reduced addition filler, although resistance still sufficiently preserved. Experiments hexane adsorption carried out order performance adsorbers Volatile Organic Compounds (VOCs) removal. as-prepared composite revealed high capacity, confirming their potential for removing traces from waste air environment.
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