Influence of the processing parameters on needleless electrospinning from double ring slits spinneret using response surface methodology

Abstract

Needleless electrospinning technology was an effective processing method which can fabricate large scale nanofibers. We first developed a novel double rings slit spinneret to overcome the shortcomings of current needleless electrospinning spinnerets. The solution of the flow rate was controlled accurately by peristaltic control pump. Response surface methodology was adopted to investigate the influence of the processing parameters on the morphology and diameter of nanofibers. The main spinning processing parameters comprised solution concentration, applied voltage, collection distance and solution flow rate. The analysis of variance was used to evaluate response surface reduced quadratic model for nanofiber diameter. The linear and quadratic coefficients were obtained. The morphology of nanofibers was observed by scanning electron microscopy. Effects of different processing parameters on the nanofiber mean diameter have been discussed. Predicated values have a good agreement with actual values for nanofiber diameter. Actual nanofiber diameter ranges from129.15 to 404.70 nm with different process parameters. Mechanical properties of nanofiber membrane have been investigated. High quality and high throughout nanofiber could be continuously produced. This novel needleless electrospinning spinneret has a great potential for large scale nanofibers production to promote electrospinning technology development. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46407.

Multiple-Jet Needleless Electrospinning Approach via a Linear Flume Spinneret

“…Therefore, a new spinneret still needs to be developed and investigated to overcome these problems. In recent years, our research group developed the annular spinneret, reducing solvent volatilization and making use of polymer solution [29,30]. Molnar used a shear-aided annular needleless electrospinning method to generate nanofibers, and the shearing effect could decrease the shear-thinning solution, which made it easy to form jet initiation [31].…”

Systematic investigation of parameters of an electrospinning process of poly(acrylic acid) nanofibres using response surface methodology

“…Recently, RSM has been used to optimize the diameter of electrospun nanofibres made of various polymers, such as polyvinyl alcohol (PVA) [27], polyacrylonitrile (PAN) [28], polymethylmethacrylate (PMMA) [29], polyvinylpyrrolidone (PVP) [30], polyamide 6 (PA 6) [31], etc. [32][33][34].…”

Electrospinning from a convex needle with multiple jet toward better controlling and enhanced production rate

“…Some spinnerets have been developed with a low solvent evaporation rate and a low electricity consumption. For instance, a double‐ring slit with the significant advantages of minimizing the solvent evaporation rate and improved solution utilization ratio was used by Wei et al ., but this spinneret required a higher applied voltage (50–70 kV). A metal plucked string spinneret was used to generate multiple jet with comparatively low electric voltage (25 kV) with a narrow diameter distribution range .…”