Continuous hollow alumina gel fibers by direct electrospinning of an alkoxide-based precursor

This work expands the field of view in ceramic fiber electrospinning, wherein ceramic fibers of hydrous alumina are directly electrospun from alkoxide-based precursors. The continuous fibrous bundles are produced with consistent tubular structures. The stability of the drawn fibers is dominated by the hydrolysis and condensation kinetics of the sol–gel precursor, which in parallel changes the processing parameter relationships found in traditional electrospinning. Here, we explore the nature and introduce the processing development of the sol–gel based fibers through electrospinning.