Synthesis and Characterization of Nanodiamond-Polymer Composites
B.T. Branson, J.L. Davidson, C.M. Lukehart
Vanderbilt University, US
Keywords: nanodiamond, composite, dispersion
Abstract:The exceptional material properties of detonation nanodiamond (ND) suggest this material would be an ideal nanoscale filler in polymer composites. Incorporating ND into polymer composites has been hindered by the nanomaterial’s poor solubility and tendency to aggregate into micron sized clusters. Methods to break the clusters of ND into dispersed, 5 nm particles has recently been reported. Furthermore, surface functionalization techniques improve the dispersion of ND in polymer resins and may increase the particle-matrix interaction. ND-epoxy specimens were prepared to investigate the how particle aggregation, surface functionalization, and particle loading affect the polymer’s mechanical properties. Dispersion and surface functionalization were characterized using dynamic light scattering, FTIR, TEM, and thermogravimetric analysis. Mechanical properties were measured using tensile testing, hardness testing, and nanoindentation. Results show that ND is an effective filler in polymer composites.