Track-etching process for precision filter
Track-etching technology is based on the irradiation of polymer materials with energetic heavy ions leading to the formation of linear damaged tracks across the irradiated polymeric layer or film. These tracks are then revealed into pores using a well-chosen wet chemical etching.
Track-etching technology is used to manufacture porous polymer membranes with randomly distributed cylindrical pores which are also characterised by a smooth flat surface and a sharp cut-off.
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Spin-off de l'UCL créée en 2006, la société it4ip a développé une technologie unique et brevetée, appelée « track etched », pour la production de membranes aux propriétés exceptionnelles. Ces membranes consistent en un film fin et poreux qui filtre gaz et liquides, et le savoir-faire réside notamment dans le contrôle de la taille et du nombre de perforations qui y sont créées.
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