Abstract
Heat transport in polymer nanocomposites reinforced with graphite nanoplatelets (GNPs) and nanofluids of Al2O3 is studied using high-precision thermal conductivity measurements. The resistance to heat conduction across interfaces between nanoscale fillers and the matrix has a strong effect on energy transport in these nanocomposites. The thermal conductivity is observed to increase when GNPs are pretreated with nitric acid to improve interfacial bonding. The thermal interface resistance extracted from the polymer nanocomposites is comparable to that obtained for carbon nanotube suspensions but is much greater than the value extracted from the aluminum oxide nanofluids.
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