Journal
COMPOSITES SCIENCE AND TECHNOLOGY
Volume 70, Issue 5, Pages 719-724Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compscitech.2009.12.026
Keywords
Onion-like carbon; Polymer-matrix composites (PMCs); Dielectric properties
Categories
Funding
- RF President's Grants Council [NSh-636.2008.3]
- program Development of potential of high school [2.1.2/2115, 2.1.2/5257]
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Composites of polystyrene and onion-like carbon (OLC), produced from detonation nanodiamonds (NDs), have been fabricated by forge-rolling method Optical microscopy and optical absorption spectroscopy were used for control of dispersion of OLC in polymer matrix after repeating rolling cycles The impedance measurements of composites with different filler loading indicated the percolation threshold at similar to 20-25 wt.% OLC concentration The permittivity of the polystyrene/OLC composites varies from 2 to 10 with changing the OLC loading from 5 to 35 wt% Fitting the experimental data with model based on the Maxwell-Garnett approximation lead to conclusion that the shear deformation applied under the composite preparing disintegrates OLC agglomerates to the size similar to 40-50 nm equal to the medium size of OLC in dimethylformamide slurry (C) 2010 Elsevier Ltd All rights reserved
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