Core–sheath polymer nanofiber formation by the simultaneous application of rotation and pressure in a novel purpose-designed vessel

Forming polymeric core–sheath nanofibers is gaining prominence owing to their numerous potential applications, most notably in functional scenarios such as antiviral filtration, which attracting significant attention due the current COVID pandemic. This study has successfully designed and constructed a novel pressurized gyration vessel fabricate polymer nanofibers. Several water-soluble water-insoluble combinations are investigated. Both polyethylene oxide polyvinyl alcohol were used core while both poly(lactic acid) (PLA) poly(caprolactone) (PCL) sheath; PLA PCL sheath, different instances; respectively. The fluid behavior of within was studied with without applied pressure using computational dynamics simulate flow chamber. A high-speed camera observe jetted solutions at openings, best scenario achieved 6000 rpm spinning speed 0.2 MPa (twice atmospheric) pressure. surface morphology fibers scanning electron microscope, focused ion beam milling assisted microscopy investigate cross-sectional features produced fibers. Laser confocal also verify structure fibers, further characterized by Fourier transform infrared spectroscopy differential calorimetry. Thus, variety combinations, we show, theoretically experimentally, how evolve that can serve scalable manufacturing production process.