Viscoelastic Properties of Iron Oxide–Poly(ethylene oxide) Nanocomposites via Nanoindentation Experiments

POSTER

Abstract

Current research aims to characterize the viscoelastic properties of iron oxide (Fe3O4) nanoparticle (NP) infused poly(ethylene oxide) (PEO) nanocomposites. Iron oxide NPs with varying surface chemistries (hydroxyl, amine, and polyethylene glycol diphosphate surface groups) were used to prepare nanocomposites with varying concentrations of iron oxide less than 1% by weight. Nanoindentation experiments were carried out on hot pressed cylindrical samples using a Hysitron TI950 Triboindenter with a Berkovich tip. Samples were subjected to stress relaxation experiments where loading rates were varied while hold times and unloading rates were held constant. Loading curves were fit to identify the influence of loading rate on loading response as a function of NP surface chemistry and NP concentration.

*This material is based upon work supported by NSF Grant 1825254.

Presenters

  • Donovan Weiblen

    • Materials Science and Engineering, Rensselaer Polytechnic Institute
    • materials science and engineering, rensselaer polytechnic institute

Authors

  • Donovan Weiblen

    • Materials Science and Engineering, Rensselaer Polytechnic Institute
    • materials science and engineering, rensselaer polytechnic institute

  • Vanessa R Swepson

    • Chemistry and Chemical Biology, Rensselaer Polytechnic Institute

  • Liam Haining

    • Computer Science, Rensselaer Polytechnic Institute

  • Grace L Gionta

    • Chemical and Biological Engineering, Rensselaer Polytechnic Institute

  • Deniz Rende

    • Center for Materials, Devices and Integrated Systems, Rensselaer Polytechnic Institute
    • materials science and engineering, rensselaer polytechnic institute

  • Rahmi Ozisik

    • Rensselaer Polytechnic Institute
    • Materials Science and Engineering, Rensselaer Polytechnic Institute
    • materials science and engineering, rensselaer polytechnic institute