High-Performance Pristine Graphene/Epoxy Composites With Enhanced Mechanical and Electrical Properties
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High-strength conductive pristine graphene/epoxy composites are prepared by two simple processing methods - freeze dry/mixing and solution processing. PVP-stabilized graphene is aggregation-resistant and allows for excellent dispersion in both the resin and final composite, as confirmed by optical microscopy and SEM images. The superior dispersion quality results in excellent nanofiller/matrix load transfer, with a 38% increase in strength and a 37% improvement in modulus for 0.46 vol% graphene loading. The composites have a very low electrical percolation threshold of 0.088 vol%. Despite the effectiveness of both methods, the freeze-drying method is more promising and versatile enough to be used for graphene dispersion in a wide range of other composite precursors. High-strength, low-percolation conductive pristine graphene/epoxy composites are prepared. Two processing methods are used for nanofiller loading: freeze-dry mixing and solution processing. The freeze-dry mixing method is versatile enough to be used for graphene dispersion in a wide range of other composite precursors. 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Macromolecular Materials and Engineering
author list (cited authors)
Wajid, A. S., Ahmed, H., Das, S., Irin, F., Jankowski, A. F., & Green, M. J.
complete list of authors
Wajid, Ahmed S||Ahmed, HS Tanvir||Das, Sriya||Irin, Fahmida||Jankowski, Alan F||Green, Micah J