Nanoindentation and nanoscratch of sub-micron polymer nanocomposite films on compliant substrate
- Resource Type
- Authors
- Jaime C. Grunlan; Andreas A. Polycarpou; Tyler Guin; Ayesha Asif; Mohammad Humood; Kyriaki Polychronopoulou
- Source
- Thin Solid Films. 736:138905
- Subject
- Nanocomposite
Materials science
Silicon
Polymer nanocomposite
Graphene
Metals and Alloys
chemistry.chemical_element
Surfaces and Interfaces
Substrate (electronics)
Nanoindentation
Surfaces, Coatings and Films
Electronic, Optical and Magnetic Materials
law.invention
chemistry.chemical_compound
chemistry
law
Indentation
Materials Chemistry
Polyethylene terephthalate
Composite material
- Language
- ISSN
- 0040-6090
Polymer thin films are deposited onto rigid materials for testing mechanical properties. However, the functionality of nanocomposites typically requires compliant substrates. Hence, it is important to investigate the nanomechanical properties of these films deposited on both substrates. This study compares the nanoindentation and nanoscratch behavior of Polyvinylamine (PVAm)/ Graphene oxide (GO) nanocomposite films on rigid silicon and compliant Polyethylene Terephthalate (PET) substrates. Contrary to the indentation rule of adhering to 10% of film depth, we obtain different measured hardness and reduced modulus on each film/substrate system with reduced modulus and hardness values of the PVAm/GO film on Silicon being 2 and 1.3 times higher than the film on PET at 10% film thickness. Experimenting on both substrates showed that extremely shallow indentation depths (