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    Highly Elastic, Transparent, and Conductive 3D-Printed Ionic Composite Hydrogels

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    Type
    Article
    Authors
    Odent, Jérémy cc
    Wallin, Thomas J.
    Pan, Wenyang
    Kruemplestaedter, Kevin
    Shepherd, Robert F.
    Giannelis, Emmanuel P.
    Date
    2017-07-17
    Online Publication Date
    2017-07-17
    Print Publication Date
    2017-09
    Permanent link to this record
    http://hdl.handle.net/10754/625798
    
    Metadata
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    Abstract
    Despite extensive progress to engineer hydrogels for a broad range of technologies, practical applications have remained elusive due to their (until recently) poor mechanical properties and lack of fabrication approaches, which constrain active structures to simple geometries. This study demonstrates a family of ionic composite hydrogels with excellent mechanical properties that can be rapidly 3D-printed at high resolution using commercial stereolithography technology. The new material design leverages the dynamic and reversible nature of ionic interactions present in the system with the reinforcement ability of nanoparticles. The composite hydrogels combine within a single platform tunable stiffness, toughness, extensibility, and resiliency behavior not reported previously in other engineered hydrogels. In addition to their excellent mechanical performance, the ionic composites exhibit fast gelling under near-UV exposure, remarkable conductivity, and fast osmotically driven actuation. The design of such ionic composites, which combine a range of tunable properties and can be readily 3D-printed into complex architectures, provides opportunities for a variety of practical applications such as artificial tissue, soft actuators, compliant conductors, and sensors for soft robotics.
    Citation
    Odent J, Wallin TJ, Pan W, Kruemplestaedter K, Shepherd RF, et al. (2017) Highly Elastic, Transparent, and Conductive 3D-Printed Ionic Composite Hydrogels. Advanced Functional Materials 27: 1701807. Available: http://dx.doi.org/10.1002/adfm.201701807.
    Sponsors
    J.O. and T.J.W. contributed equally to this work. J.O. gratefully thanks the Belgian American Educational Foundation (BAEF) for its financial support. The authors gratefully acknowledge support from NPRP Grant # 5-1437-1-243 from Qatar National Research Fund, Award # CMMI-1537413 from the National Science Foundation and the Grant ID W911F-16-0095 from the Army Research Office. The authors also acknowledge use of facilities at the Cornell Center for Materials Research (CCMR) supported by the National Science Foundation under Award No. DMR-1120296 and the support of Award No. KUS-C1-018-02 made by King Abdullah University of Science and Technology (KAUST). The authors acknowledge Brian Cavelry for providing with the Touchdown the Bear design file.
    Publisher
    Wiley
    Journal
    Advanced Functional Materials
    DOI
    10.1002/adfm.201701807
    ae974a485f413a2113503eed53cd6c53
    10.1002/adfm.201701807
    Scopus Count
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