Hollow fiber spinning machine

Uitrusting/faciliteit: Uitrusting




    The hollow fiber spinline is used to produce hollow fiber membranes via a dry-wet immersion precipitation phase separation process. The fibers are spun by co-extruding a polymer solution and an internal coagulant into a water containing coagulation bath.

    The dry-wet spinning process consists of three stages of diffusion-induced phase separation:
    1. Solvent evaporation or vapor penetration at the outer
    surface of the extruded polymer solution.
    2. Immersion precipitation through the inside; non-solvent
    from the bore liquid diffuses into the polymer solution.
    3. Immersion precipitation via the outer surface when the nascent fibers enters the coagulation bath


    Dry-wet spinning of hollow fiber membranes has a number of advantages:

    • membrane morphology is tailored by an appropriate
    formulation and spin parameters
    • pore structure is formed both from outside and inside • typical diameters: 200 - 5000 micrometer
    • typical production speed: 5 - 50 m/min


    The hollow fibers are applied in:
    • waste water treatment and drinking water production • wine and beer clarification
    • gas separation e.g. O2/N2 and biogas upgrading
    • (bio)medical e.g. hemodialysis, controlled release


    Naam Hollow fiber spinning machine
    FabrikantenUniversity of Twente

    Vingerafdruk Verken de onderzoeksgebieden waarvoor deze uitrusting is gebruikt. Deze labels worden gegenereerd op basis van de gerelateerde outputs. Samen vormen ze een unieke vingerafdruk.