About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
Mechanical Behavior at the Nanoscale VI
|
Presentation Title |
Tuning the Fracture Toughness of Polymer-infiltrated Nanoparticle Films via Nanoconfinement |
Author(s) |
Kevin Turner, Yiwei Qiang, Daeyeon Lee |
On-Site Speaker (Planned) |
Kevin Turner |
Abstract Scope |
Physical nanoconfinement of polymers in nanocomposites with high filler content (>50 wt%) can dramatically alter the mechanical properties of the polymers in the composite. Here, we investigate the fracture behavior of polymer-infiltrated nanoparticle films (PINFs) prepared by capillary-driven infiltration of polymers into nanoparticle (NP) packings. PINFs have applications as multifunctional coatings and membranes and also provide a unique platform to investigate the role of nanoconfinement on fracture. PINFs with different molecular weight (MW) polymers and varying NP size, and hence different degrees of confinement, were prepared. The fracture toughness of these materials was experimentally measured to investigate the role of nanoconfinement on the failure behavior of PINFs. The results show increasing toughness of the PINFs with increasing MW as expected, but also show that confinement plays a large role in fracture behavior. The full results and the contributions of nanoscale polymer confinement on fracture properties will be discussed. |
Proceedings Inclusion? |
Planned: |
Keywords |
Polymers, Mechanical Properties, Composites |