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    • 4. 发明公开
    • FLEXIBLE, SEMICONDUCTING NANOCOMPOSITE MATERIALS BASED ON NANOCRYSTALLINE CELLULOSE AND POLYANILINE
    • 柔性,半导电纳米复合材料基于纳米结晶纤维素和聚苯胺
    • EP2691467A1
    • 2014-02-05
    • EP12765618.9
    • 2012-03-28
    • FPInnovations
    • HAMAD, Wadood, YasserATIFI, Siham
    • C08L79/02C08J5/24C08L1/02
    • H01B1/20B82Y30/00C08L1/04C08L79/02
    • A new approach is conceived for the development of organic polymeric conducting materials synthesized from nanocomposites of nanocrystalline cellulose (NCC) and polyaniline (PANI). The process involves oxidative-radical polymerization of aniline in the presence of NCC using either in situ or emulsion polymerization. The resulting NCC-PANI nanocomposite material can be obtained in film or powder form and exhibits electrical conductive properties typical of semiconducting materials. Unlike PANI, a brittle conductive polymer, NCC-PANI nanocomposite materials can be engineered to possess significant flexibility, strength and/or hardness as a result of the NCC acting as a reinforcing scaffold. Depending on the preparation conditions, electrical conductivities for the NCC-PANI nanocomposite materials prepared according to this disclosure range from 9.98 x 10
      -5 to 1.88 x 10
      -2 S.cm
      -1 ; they could also have hardness > 0.189 GPa or be formed into flexible films of tensile strength of the order of 9.74 MPa and stretch of the order of 0.54%. These unique electrical and mechanical properties render these materials suitable for use in a variety of value-added industrial products, such as batteries, electronics, electrical sensors, separation membranes, anti-static coatings for aerospace applications, as well as anti-corrosive coatings for automotives and other industrial applications.