Nanodiamond-Polymer Composite Fibers and Coatings
While nanocrystalline diamond is quickly becoming one of the most widely studied nanomaterials, achieving a large fraction of diamond nanoparticles in a polymer coating has been an unresolved problem. In this work, polymer nano- and microtibers containing high loadings of 5 nm diamond particles (up to 80 wt % in polyacrylonitrile and 40% in polyamide 11) have been demonstrated using electrospun nanofibers as a delivery vehicle. The electrospun nanofibers with a high load of nanodiamond in the polymers were fused into thin transparent films, which had high mechanical properties; an improvement of 4 times for the Young's modulus and 2 times for the hardness was observed already at 20% nanodiamond in polyamide 11. These films can provide UV protection and scratch resistance to a variety of surfaces, especially in applications where a combination of mechanical, thermal, and dielectric properties is required.
K. D. Behler et al., "Nanodiamond-Polymer Composite Fibers and Coatings," ACS Nano, vol. 3, no. 2, pp. 363-369, American Chemical Society (ACS), Jan 2009.
The definitive version is available at http://dx.doi.org/10.1021/nn800445z
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© 2009 American Chemical Society (ACS), All rights reserved.