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    Semi-metallic, strong conductive polymer microfiber, method and fast response rate actuators and heating textiles

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    WO2016087945A2.pdf
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    Description:
    Published Application
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    Type
    Patent
    Patent Status
    Published Application
    Authors
    Zhou, Jian cc
    Li, Er Qiang
    Lubineau, Gilles cc
    Thoroddsen, Sigurdur T cc
    Mulle, Matthieu
    Assignee
    King Abdullah University Of Science And Technology
    KAUST Department
    Physical Science and Engineering (PSE) Division
    Date
    2016-06-09
    Submitted Date
    2014-12-03
    Permanent link to this record
    http://hdl.handle.net/10754/620505
    
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    Abstract
    A method comprising: providing at least one first composition comprising at least one conjugated polymer and at least one solvent, wet spinning the at least one first composition to form at least one first fiber material, hot-drawing the at least one fiber to form at least one second fiber material. In lead embodiments, high-performance poly(3,4-ethylenedioxy- thiophene)/poly(styrenesulfonate) (PEDOT/PSS) conjugated polymer microfibers were fabricated via wet- spinning followed by hot-drawing. In these lead embodiments, due to the combined effects of the vertical hot-drawing process and doping/de-doping the microfibers with ethylene glycol (EG), a record electrical conductivity of 2804 S · cm-1 was achieved. This is believed to be a six-fold improvement over the best previously reported value for PEDOT/PSS fibers (467 S · cm-1) and a twofold improvement over the best values for conductive polymer films treated by EG de-doping (1418 S · cm-1). Moreover, these lead, highly conductive fibers experience a semiconductor-metal transition at 313 K. They also have superior mechanical properties with a Young's modulus up to 8.3 GPa, a tensile strength reaching 409.8 MPa and a large elongation before failure (21%). The most conductive fiber also demonstrates an extraordinary electrical performance during stretching/unstretching: the conductivity increased by 25% before the fiber rupture point with a maximum strain up to 21%. Simple fabrication of the semi-metallic, strong and stretchable wet-spun PEDOT/PSS microfibers can make them available for conductive smart electronics. A dramatic improvement in electrical conductivity is needed to make conductive polymer fibers viable candidates in applications such as flexible electrodes, conductive textiles, and fast-response sensors and actuators.
    Application Number
    WO 2016087945 A2
    WO2016087945A3
    Additional Links
    http://www.google.com/patents/WO2016087945A2
    http://worldwide.espacenet.com/publicationDetails/biblio?CC=WO&NR=2016087945A2&KC=A2&FT=D
    Collections
    Patents; Physical Science and Engineering (PSE) Division

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