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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Carbon nanofiber electrodes without commercial polymer precursors deliver superior electrochemical performance
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Functional PVDF/rGO/TiO2 nanofiber webs for the removal of oil from water
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Co-assembling Polysaccharide Nanocrystals and Nanofibers for Robust Chiral Iridescent Films
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Nanofibers Produced by Electrospinning of Ultrarigid Polymer Rods Made from Designed Peptide Bundlemers
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Supramolecular Nanofibers Block SARS-CoV-2 Entry into Human Host Cells
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In Situ Growth of Cu/CuO/Cu[subscript 2]O Nanocrystals within Hybrid Nanofibers for Adsorptive Arsen
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Biomimetic Extracellular Scaffolds by Microfluidic Superstructuring of Nanofibers
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Peptide Amphiphile Supramolecular Nanofibers Designed to Target Abdominal Aortic Aneurysms
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Development of Optimized Tissue-Factor-Targeted Peptide Amphiphile Nanofibers to Slow Noncompressible Torso Hemorrhage
Abstract not provided
Multi-channel V-doped CoP hollow nanofibers as high-performance hydrogen evolution reaction electrocatalysts
Abstract not provided
Electrospinning of ultra-high molecular weight polymers into aligned nanofibers and their application in chemical separations
Ultra-high molecular weight (UHMW, >10 6 g mol −1 ) vinyl polymers are increasingly accessible through photoiniferter polymerization, yet their behavior in electrospinning has received comparatively little attention. Here, we explore the electrospinning of UHMW poly(methyl acrylate), poly(methyl methacrylate), poly(N,N-dimethylacrylamide), and poly(styrene-co-pentafluorostyrene) synthesized by photoiniferter polymerization, with number-average molecular weights (M n ) greater than 1000 kDa and dispersities below 1.4. UHMW polymers form stable Taylor cones and discrete fibers at solution concentrations as low as 0.5 wt% due to their large number of entanglements, a threshold unachievable with low molecular weight (M n = 20–54 kDa) polymers of the same chemistry. Using poly(methyl methacrylate) and poly(styrene-co-pentafluorostyrene) as model systems, we demonstrate that fiber diameter can be tuned from 350 nm to 20 μm through systematic variation of polymer concentration (0.01 to 4 wt%) and flow rate (0.5 to 10 mL h −1 ). Additionally, we find that collector rotation rate governs fiber alignment, with highly aligned mats obtained with drum rotation speeds of 1000 RPM. Reversing the polarity of the electric field during electrospinning reorients the surface chemistry of these fiber mats without altering their microscale morphology, shifting the water contact angle by 7° (89° to 96°) and providing a two-fold binding capacity enhancement in cationic dye uptake. These results show that the high entanglement densities of UHMW vinyl polymers shift the accessible electrospinning window to dilute solutions and that electric-field polarity is a useful lever to control the surface chemistry in the resulting fibers.
Effect of Carbon Nanofibers on the Hydration of Ultrahigh-Performance Concrete: Experimental Study and Model Development
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Guided Cold-Atom Inertial Sensor Platforms with Membrane Integrated Photonics and Nanofibers.
Abstract not provided.