Abstract
Nanomechanical properties of single-walled carbon nanotube (SWNT) reinforced epoxycomposites with varying weight percentage (0, 1, 3, and 5 wt%) of nanotubes were measuredby nanoindentation and nanoscratch techniques. Hardness and elastic moduluswere measured using a nanoindenter. Scratch resistance and scratch damage werestudied using the AFM tip sliding against the SWNT reinforced sample surfaces.Nanoindentation/nanoscratch deformation and fracture behaviour was studied by in situimaging of the indentation impressions/scratch tracks. Viscoelastic properties of thenanocomposites were measured using nanoindentation dynamic mechanical analysis tests.The reinforcing mechanisms are discussed with reference to the nanotube dispersion,interfacial bonding, and load transfer in the SWNT reinforced polymer composites.
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