Electrostatic-assisted centrifugal spinning for continuous collection of submicron fibers

Abstract

Non-uniformity of the fiber diameter and difficulty in continuous web collection have limited the development and further application of centrifugal spinning (CS). Here, we present a feasible method for fibers' continuous collection and morphology optimization by utilizing vertical electrostatic-assisted centrifugal spinning (E-CS). The effects of spinning parameters, such as applied voltage, nozzle size, and rotational speed on fiber morphology have been evaluated systematically. We find that vertical voltage is strongly correlated with the formation of bead defects, and nozzle size is the most important parameter on fiber size, and the fiber diameter generally decreased with increasing rotation speed. Through the mechanism analysis and jet trajectory observation, we think that the Rayleigh–Taylor instability is the key factor in determining fiber formation in CS. When a vertical electrostatic force is applied to CS, the above instability phenomenon can be effectively controlled resulting more uniform fibers with thinner diameters and fewer beads.

Micropatterned Fibrous Scaffold Produced by Using Template-Assisted Electrospinning Technique for Wound Healing Application

“…These physical and morphological properties could reduce the effect of cell behavior since the cell activities could be decreased with a minimal difference in the fiber diameters [ 37 , 38 , 39 , 40 ]. Hence, we assumed a structural scaffold can be fabricated by modified electrospinning [ 3 , 36 , 41 , 42 , 43 , 44 ] in further studies, which is able to produce fibers with a more uniform distribution. This can lead to provide more positive effects on cell behavior.…”

Optimization of the Spinneret Rotation Speed and Airflow Parameters for the Nozzleless Forcespinning of a Polymer Solution

“…Nanomaterials are also gaining popularity in the field of bioresource fibers, such as the production of nanofibrils [16]. A wide range of manufacturing processes are used for the production of nanofibers, the best-known of which include electrospinning via direct current (DC) or alternating current (AC), drawing [17], forcespinning [18], in exceptional cases melt-blowing [19,20] or other less common methods like mechanotropic spinning [21], and a combination of electrospinning and forcespinning [22][23][24][25]. All these methods, however, feature significant limitations from various perspectives, including low productivity, process complexity or low process safety levels.…”

“…Polymers 2022, 14, x FOR PEER REVIEW 2 of 12 less common methods like mechanotropic spinning [21], and a combination of electrospinning and forcespinning [22][23][24][25]. All these methods, however, feature significant limitations from various perspectives, including low productivity, process complexity or low process safety levels.…”

Determining the effect of centrifugal and electrical forces on the jet behaviors, the nanofiber structure, and morphology

“…Yanilmaz et al fabricated a SiO2/polyacrylonitrile membrane via CS as a separator for Li‐ion batteries. Recently, efforts have been made to improve the performance, cost efficiency, and product quality of ECS systems.…”

“…9 In 2011, Harvard University researchers published the second paper on fabrication of nanofibers with the aid of centrifugal forces. 10 15 and product quality 16 of ECS systems.…”