Читать книгу Applications of Polymer Nanofibers - Группа авторов - Страница 40

Centrifugal spinning is an efficient and simple method to achieve submicro/nanofibers with high volume output. The setup mainly includes a high‐speed motor, a spinneret, a collector, and a speed controller. During the process, a polymer precursor is injected into a spinning head, and it is then drawn out by the centrifugal force and stacked on the collector (Zhang and Lu 2014). The speed of spinneret in the center can reach a rotation rate of 2000–13 000 rpm (Marano et al. 2016).

Normally, the faster the rotating speed is, the smaller the fiber diameters are. It is stated that nanofiber diameter of as small as 25 nm was observed by nozzle‐free centrifugal spinning (Weitz et al. 2008). A broad range of fibers have been investigated for centrifugal spinning, such as PAN, ethyl cellulose (EC)/PVP, PEO, PVDF, PCL (Lu et al. 2015; Hou et al. 2017; Jiang et al. 2015; Vazquez et al. 2012; McEachin and Lozano 2012).