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    MICROFLUIDIC-BASED WET SPINNING OF INDIVIDUAL SOLID POLYMER FIBERS
    8.
    发明公开
    MICROFLUIDIC-BASED WET SPINNING OF INDIVIDUAL SOLID POLYMER FIBERS 审中-公开

    公开(公告)号：EP4269671A1

    公开(公告)日：2023-11-01

    申请号：EP22170061.0

    申请日：2022-04-26

    申请人： EMPA Eidgenössische Materialprüfungs- und Forschungsanstalt

    发明人： Wei, Kongchang ,  Boesel, Luciano ,  Rossi, René

    IPC分类号： D01F8/04 ,  D01F8/18 ,  D01D5/06 ,  D01D5/34

    摘要： A method for producing an individual solid polymer fiber from a precursor liquid (L1) comprising polymerizable and/or cross-linkable polymer precursors by microfluidic-based wet spinning comprises the steps of: a) Introducing the precursor liquid (L1) into a first capillary tube (11) coaxially protruding into a second capillary tube (12); b) Producing a liquid fiber with core-shell structure in the second capillary tube (12); c) Optionally, injecting the liquid fiber with core-shell structure produced in step b) into a third capillary (13) tube to produce a fiber with core-shell-sheath structure; d) Guiding the liquid fiber with core-shell structure, optionally having a sheath, as produced in step b) or in step c) through a stationary liquid phase (SP); e) Curing the liquid sheet of the fiber with core-shell structure at least in one of steps c) and d) to provide a fiber having a liquid core (22) embedded in a cured shell (21); f) Collecting the fiber; g) After step f), solidifying the liquid core (22) of the fiber; h) Removing the cured shell (21) from the solid core (22') to obtain the solid polymer fiber.