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Tough and flexible conductive triple network hydrogels based on agarose/polyacrylamide/polyvinyl alcohol and poly(3,4-ethylenedioxythiophene):polystyrene sulfonate

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    0545131 - ÚMCH 2022 RIV GB eng J - Journal Article
    Azar, M. G. - Dodda, J. M. - Bělský, P. - Šlouf, Miroslav - Vavruňková, V. - Kadlec, J. - Remiš, T.
    Tough and flexible conductive triple network hydrogels based on agarose/polyacrylamide/polyvinyl alcohol and poly(3,4-ethylenedioxythiophene):polystyrene sulfonate.
    Polymer International. Roč. 70, č. 10 (2021), s. 1523-1533. ISSN 0959-8103. E-ISSN 1097-0126
    Institutional support: RVO:61389013
    Keywords : triple-network hydrogel * conductivity * PEDOT
    OECD category: Polymer science
    Impact factor: 2.990, year: 2020
    Method of publishing: Limited access
    https://onlinelibrary.wiley.com/doi/10.1002/pi.6232

    Herein, we demonstrate a simple and cost-effective way to fabricate conductive triple network hydrogels based on agarose (Ag), polyacrylamide (PAM) and poly(vinyl alcohol) (PVA) with a combination of physical–chemical crosslinked networks. The conductivity was generated by doping poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS) into the triple network matrix of Ag-PAM-PVA. All hydrogels were homogeneous in the swollen state and incorporation of PEDOT:PSS did not influence the morphology significantly on a microscale, (light microscopy and cryogenic low-vacuum SEM). On the nanoscale, small-angle X-ray scattering showed some differences between hydrogels with/without PEDOT:PSS and also between double/triple networks. The tensile and compressive properties were enhanced at a lower concentration of PEDOT:PSS, with a maximum tensile strength of 0.47 MPa, at an elongation of 119%. Fortunately, all hydrogels have shown conductivity in the range of 0.3−1.5 mS cm−1 which is comparable with the conductivity of skin tissues and hence they can be conveniently optimized for use in biosensors or other devices related to skin/internal tissues.
    Permanent Link: http://hdl.handle.net/11104/0321941

     
     
Number of the records: 1