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 microfibers 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.
Behler
Kristopher D
KD
A.J. Drexel Nanotechnology Institute and Department of Materials Science and Engineering, Drexel University, 3141 Chestnut Street, Philadelphia, Pennsylvania 19104, USA.
Stravato
Antonella
A
Mochalin
Vadym
V
Korneva
Guzeliya
G
Yushin
Gleb
G
Gogotsi
Yury
Y
D000180:Acrylic Resins / Q000737:chemistry; D018130:Diamond / Q000737:chemistry*; D005240:Feasibility Studies; D008855:Microscopy, Electron, Scanning; D046529:Microscopy, Electron, Transmission; D053761:Nanocomposites / Q000737:chemistry*; D009757:Nylons / Q000737:chemistry; D011108:Polymers / Q000737:chemistry*; D013056:Spectrophotometry, Ultraviolet
D000180:Acrylic Resins; D009757:Nylons; D011108:Polymers; C010504:polyacrylonitrile; D018130:Diamond