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In this work we show that sonication alone can be used to scission bulk electrospun membranes into short fibres. The mechanism of such scission events is bubble cavitation stimulated by the ultrasonic probe, followed by bubble implosion. The tendency of polymer nanofibres to undergo failure by such a scission process appears to primarily depend on the ductility of the polymer, with brittle, electrospun...
Functionally graded carbon nanofiber-phenolic nanocomposites (FGN) with four different gradient patterns and the same total carbon nanofiber (CNF) content and geometry were designed and fabricated. A Non-graded nanocomposite (NGN) was also fabricated for comparison purposes. Microstructural characteristics were examined by optical and scanning electron microscopy. Temperature-dependent thermal conductivity...
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