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Fabrication of sodalite-polymer nanocomposite membranes

Li, D. and Wang, H. (2008) Fabrication of sodalite-polymer nanocomposite membranes. In: Chemeca 2008: Towards a Sustainable Australasia, 28 September - 1 October, Newcastle, NSW, Australia pp. 993-1000.


This study focuses on the fabrication of sodalite-polyimide nanocomposite membranes by applying organic-functionalised sodalite nanocrystals. Sodalite nanocrystals with amino organic functional groups (=Si-(CH{3})(CH{2}) {3}NH{2}) were synthesized by direct transformation of silicalite nanocrystals. The produced sodalite crystals had an average particle size of 103 nm and good dispersibility in DMF organic solvent. By incorporating organic-functionalised sodalite nanoparticles into polyimide polymers, sodalite-polyimide nanocomposite membranes with up to 15 wt% zeolite nanocrystal loading were fabricated. Their SEM image for cross-section indicated that there were no voids between organic polyimide polymers and inorganic nanocrystals. The mass loss of polyimide was 100% after TGA, compared to 86.8% of sodalite-polyimide nanocomposite membranes. DTG results showed that the differential temperature of nanocomposite membranes centred at around 580 C, which was higher than that of pure polyimide polymers (570 C).

Item Type: Conference Paper
Publisher: Engineers Australia
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