Effect of flow rate on diameter of electrospun nanoporous fibers

Abstract

The effect of flow rate on the diameter of the charged jet in the electrospinning process is studied theoretically. The obtained theoretical results offer in-depth physical understanding and mechanism of nanoporous fibers. It also reveals that the morphology and diameter of nanoporous microspheres can be controlled by the flow rate.

Engineering of a Stable Collagen Nanofibrous Scaffold with Tunable Fiber Diameter, Alignment, and Mechanical Properties

“…Adjusting the flow rate we obtain fiber diameter in the range of 175–350 nm. This behavior has been previously observed in other reports using synthetic polymers . Megelski et al investigated the effects of flow rate on the structure of electrospun fibers from a polystyrene/tetrahydrofuran solution and reported that fiber diameter increased with increasing flow rate .…”

“…This behavior has been previously observed in other reports using synthetic polymers. [49][50][51][52] Megelski et al investigated the effects of fl ow rate on the structure of electrospun fi bers from a polystyrene/tetrahydrofuran solution and reported that fi ber diameter increased with increasing fl ow rate. [ 53 ] When fl ow rate is high, larger droplets are produced at the end of the capillary causing the jet solution to be electrosprayed without any suffi cient elongation.…”

“…For SEM evaluation, the membranes were washed three times with PBS, and then fi xed with 200 μL of 3.7% formaldehyde in water for 15 min. The formaldehyde was removed; the samples were rinsed with PBS, dehydrated using ethanol solutions of sequentially increasing concentration(30,50, 70, and 100%), and further dried in a desiccator overnight. The samples were observed in the SEM as mentioned above.…”

Effect of surface active agent on bubble-electrospun polyacrylonitrile nanofibers

“…There are many factors affecting the morphology and property of nanofibers obtained in the MBE process, including properties of spinning solution (such as solution mass fraction, viscosity and electrical conductivity), spinning parameters (such as voltage, drum rotation speed and working distance), and environmental parameters (such as temperature and humidity) [12][13][14][15]. According to our previous work [5,8,16], the electrospinning parameters were set as follows.…”

A particle suspension model for nanosuspensions electrospinning

“…The electrospinning process for fabrication of composite nanofibers is a multi-phase and multi-physics process. The electrospinning process has been studied experimentally and theoretically [17][18][19][20]. In recent years, many experimental studies have been conducted to understand the electrospinning process and a number of mathematical models have been developed for research mechanical mechanism of the process [21][22][23][24][25].…”