Functionalization and Dispersion of Carbon Nanomaterials Using an Environmentally Friendly Ultrasonicated Ozonolysis Process

Author(s)Yeo, Eudora S. Y.
Author(s)Mathys, Gary I.
Author(s)Brack, Narelle
Author(s)Thostenson, Erik T.
Author(s)Rider, Andrew N.
Ordered AuthorEudora S. Y. Yeo, Gary I. Mathys, Narelle Brack, Erik T. Thostenson, Andrew N. Rider
UD AuthorThostenson, Erik T.en_US
Date Accessioned2017-09-13T14:47:06Z
Date Available2017-09-13T14:47:06Z
Copyright DateCopyright © 2017 Journal of Visualized Experimentsen_US
Publication Date2017-05-30
DescriptionPublisher's PDFen_US
AbstractFunctionalization of carbon nanomaterials is often a critical step that facilitates their integration into larger material systems and devices. In the as-received form, carbon nanomaterials, such as carbon nanotubes (CNTs) or graphene nanoplatelets (GNPs), may contain large agglomerates. Both agglomerates and impurities will diminish the benefits of the unique electrical and mechanical properties offered when CNTs or GNPs are incorporated into polymers or composite material systems. Whilst a variety of methods exist to functionalize carbon nanomaterials and to create stable dispersions, many the processes use harsh chemicals, organic solvents, or surfactants, which are environmentally unfriendly and may increase the processing burden when isolating the nanomaterials for subsequent use. The current research details the use of an alternative, environmentally friendly technique for functionalizing CNTs and GNPs. It produces stable, aqueous dispersions free of harmful chemicals. Both CNTs and GNPs can be added to water at concentrations up to 5 g/L and can be recirculated through a high-powered ultrasonic cell. The simultaneous injection of ozone into the cell progressively oxidizes the carbon nanomaterials, and the combined ultrasonication breaks down agglomerates and immediately exposes fresh material for functionalization. The prepared dispersions are ideally suited for the deposition of thin films onto solid substrates using electrophoretic deposition (EPD). CNTs and GNPs from the aqueous dispersions can be readily used to coat carbon- and glass-reinforcing fibers using EPD for the preparation of hierarchical composite materials.en_US
DepartmentUniversity of Delaware. Department of Mechanical Engineering.en_US
DepartmentUniversity of Delaware. Department of Materials Science and Engineering.en_US
DepartmentUniversity of Delaware. Center for Composite Materials.en_US
CitationYeo, E.S., Mathys, G.I., Brack, N., Thostenson, E.T., Rider, A.N. Functionalization and Dispersion of Carbon Nanomaterials Using an Environmentally Friendly Ultrasonicated Ozonolysis Process. J. Vis. Exp. (123), e55614, doi:10.3791/55614 (2017).en_US
PublisherJournal of Visualized Experiments (JoVE)en_US
dc.rightsManuscript is made available in accordance with the University of Delaware Faculty Policy on Open Access and the publisher's policy.en_US
dc.sourceJournal of Visualized Experimentsen_US
TitleFunctionalization and Dispersion of Carbon Nanomaterials Using an Environmentally Friendly Ultrasonicated Ozonolysis Processen_US
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