About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
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Symposium
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Mechanical Response of Materials Investigated Through Novel In-Situ Experiments and Modeling
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Presentation Title |
Achieving the Maximum Modulus of Resilience in Polymer Nanocomposites via Sequential Infiltration of Metal Oxides |
Author(s) |
Zhongyuan Li, Nikhil Tiwale , Ashwanth Subramanian, Ying Li, Chang-Yong Nam, Seok-Woo Lee |
On-Site Speaker (Planned) |
Zhongyuan Li |
Abstract Scope |
Engineering the modulus of resilience, the material’s maximum ability to store the elastic strain energy, has been challenging because it requires the asymmetric increase in yield strength and Young’s modulus against their mutual scaling behavior. To overcome this issue, we developed organic–inorganic nanocomposites by utilizing Al2O3 and ZnO infiltration into SU-8 polymer nanopillars. The in-situ nanomechanical measurements revealed a metal-like high yield strength (∼400 MPa) with an unusually low, foam-like Young’s modulus (∼3 GPa), which yields an ultrahigh modulus of resilience (∼26 MJ/m3), surpassing those of most engineering materials. We also developed the interphase composite model that captures the effects of nanoscale oxide on the mechanical properties and confirmed that our experimental data are close to the theoretical limit of modulus of resilience. Our results suggest that the sequential infiltration synthesis is the effective synthesis method for developing a polymer nanocomposite with an enhanced modulus of resilience. |
Proceedings Inclusion? |
Planned: |
Keywords |
Composites, Modeling and Simulation, |