Self-Crimping Bicomponent Nanofibers Electrospun from Polyacrylonitrile and Elastomeric Polyurethane


  • We thank Dr. Weidong Yang at CSIRO Manufacturing and Infrastructural Division for insightful discussions on the preparation of the microfluidic device and electrospinning process.


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Nanofibers with side-by-side morphologies are electrospun from polyacrylonitrile and polyurethane using a microfluidic device. Laminar flow of the two polymer solutions through the device results in nanometer-diameter curly nanofibers with bicomponent cross-sections. The polyurethane half of the nanofibers can be dissolved in tetrahydrofuran, leaving a “U”-shaped cross-section as seen in the Figure.