Generation of polymer ultrafine fibers through solution (air‐) blowing

Abstract

Solution (air-) blowing, an innovative technique for generation of ultrafine polymer fibers from solutions, was developed by feeding polymer solutions (instead of melts) to a die assembly similar to that used in the conventional melt (air-) blowing process. Micro-to nano-scaled polyvinylpyrrolidone (PVP) fibers were produced using PVP solutions with water, ethanol, and/or their mixtures as the solvents; and the morphologies of the fibers were examined by scanning electron microscopy. The processing variables, including PVP concentration, air-blowing pressure, solution-feeding pressure, and the volatility of the solvent system (the ratio of ethanol to water), were systematically investigated. The results indicated that solution (air-) blowing was a viable technique to produce nonwoven fabrics consisting of ultrafine polymer fibers with diameters ranging from micrometers to nanometers.

A Review of the Fundamental Principles and Applications of Solution Blow Spinning

“…25 Increasing gas pressure produces a narrower fiber diameter distribution with less variance and consistent fiber morphology, which is preferred for applications that require precise fiber diameter (Figure 4A–C). 5,26,28 However, increasing gas flow rate beyond the optimal range may also cause a temperature decrease at the SBS device due to gas expansion, which decreases temperature proportional to the volumetric expansion of the carrier gas. 5 This may cause poor solvent evaporation and fiber welding (Figure 4C).…”

Systematic investigation on parameters of solution blown micro/nanofibers using response surface methodology based on box‐Behnken design

“…[1][2][3] Nanofibers can be obtained via various methods such as drawing, self-assembly, phase separation, template synthesis, bicomponent spinning, flash spinning, melt blowing, and electrospinning, just to name a few. 5 Those emerging alternative techniques include gas-assisted spinning including electroblowing, 6,7 gas-jet/electrospinning, 8,9 solution blowing, [10][11][12][13][14][15][16][17][18][19] and gas jet process, 20 centrifugal spinning 5 involving centrifugal electrospinning and centrifugal nanospinning, and various modification of needleless spinning, [21][22][23] etc. 5 Those emerging alternative techniques include gas-assisted spinning including electroblowing, 6,7 gas-jet/electrospinning, 8,9 solution blowing, [10][11][12][13][14][15][16][17][18][19] and gas jet process, 20 centrifugal spinning 5 involving centrifugal electrospinning and centrifugal nanospinning, and various modification of needleless spinning, [21][22][23] etc.…”

“…5 Those emerging alternative techniques include gas-assisted spinning including electroblowing, 6,7 gas-jet/electrospinning, 8,9 solution blowing, [10][11][12][13][14][15][16][17][18][19] and gas jet process, 20 centrifugal spinning 5 involving centrifugal electrospinning and centrifugal nanospinning, and various modification of needleless spinning, [21][22][23] etc. 11 Solution blowing is named relatively to melt blowing and is inspired by melt blowing, but it is generally capable of manufacturing fibers with high speed pressured gas, and it integrates the advantages of electrospinning producing fibers from a few micrometers down to several nanometers as well as melt blowing scalable for commercial production. 11 Solution blowing is named relatively to melt blowing and is inspired by melt blowing, but it is generally capable of manufacturing fibers with high speed pressured gas, and it integrates the advantages of electrospinning producing fibers from a few micrometers down to several nanometers as well as melt blowing scalable for commercial production.…”

Coaxial solution blowing of modified hollow polyacrylonitrile (PAN) nanofiber Fe complex (Fe-AO-CSB-HPAN) as a heterogeneous Fenton photocatalyst for organic dye degradation

“…The nanobers are fabricated in very low yields with 1.0-5.0 mL h À1 solution ow rate which limits the industrial applications of electrospinning. Polystyrene (PS), poly(lactic acid) (PLA), poly(methyl methacrylate) (PMMA), polyvinylpyrrolidone (PVP), 22 polyvinylidene uoride (PVDF) 23 and cellulose micro-and nanober mats 24 had been successfully produced by solution blowing process. Recently, solution blowing process was reported as an innovative method to produce micro/nanobers with its high nanober productivity.…”