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Integration of Carbon Nanotubes and Carbide Nanoparticles in Polymer Matrices for Enhanced Properties

This research explores the integration of carbon nanotubes (CNTs) and carbide nanoparticles in a polymer matrix, particularly Ultra High Molecular Weight Polyethylene, to enhance mechanical properties. Key objectives include improving nanotube/particle loading and characterizing shear-thickening effects using advanced testing methods such as Transmission Electron Microscopy, nanoindentation, and tensile testing. The study also involves molecular dynamics and modeling to better understand the interactions within the composite, paving the way for innovative, high-performance materials.

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Integration of Carbon Nanotubes and Carbide Nanoparticles in Polymer Matrices for Enhanced Properties

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  1. Integration and Transient Shear-Thickening Effects of Carbon Nanotubes and Carbide Nanoparticles in a Polymer Matrix

  2. Background Information • Carbon Nanotubes • Discovery by Iijima in 1991 • Unique properties due to size and structure • Conductive, strong, lightweight, etc. • SW, DW, and MW varieties • SW better for nanocomposites • Polymer • Ultra High Molecular Weight Polyethylene

  3. Goals • Improve nanotube/particle integration and loading to improve mechanical properties (strength, hardness, etc.) • Characterize shear-thickening effect of nanotubes/particles in polymer matrix • Combine loaded polymer with other materials to create prototype complex material

  4. First Phase: Synthesis

  5. Second Phase: Testing/Characterization • Testing • Transmission Electron Microscopy, for surface morphology. • Nanoindentation, for hardness. • Nanoindentation, for storage modulus. • Tensile testing, for tensile strength. • Tensile testing, for Young’s modulus. • Characterization • Analyze mechanical properties during dynamic and static loading to determine characteristics of shear-thickening effects

  6. Third Phase: Molecular Dynamics • Empirical models for fiber in composite matrix • Equivalent-continuum modeling method • Traditional fiber composite models do not apply • Must take into account large interfacial area relative to polymer matrix volume • Must take into account secondary forces such as VdW forces • Nanocomposite models • Polymer matrix/CNT • Polymer matrix/CNT interfacial modeling • Van der Waals modeling • σ-ε behavior • Analyzed by comparing to rule of mixtures

  7. Questions?

  8. References • R. Andrews, A. Berkovich, J.C. Hower, D. Jacques, & T. Rantell. “Fabrication of Carbon Multi-wall Nanotube/Polyer Composites by Shear Mixing.” University of Kentucky, Center for Applied Energy Research. • W.C. Oliver and G.M. Pharr. Measurement of hardness and elastic modulus by instrumented indentation: Advances in understanding and refinements to methodology. J. Mater. Res. 19 (2004), 3. • Wetzel, Eric D. et al. "Protective Fabrics Utilizing Shear Thickening Fluids." 2004. • Yuezhen Bin, MayunaKitanaka, Dan Zhu, and Masaru Matsuo. Department of Textile and Apparel Science, Faculty of Human Life and Environment, Nara Women’s University, Nara 630-8263, Japan.

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