Electrospinning of uniform polystyrene fibers: The effect of solvent conductivity

Uyar, Tamer; Besenbacher, Flemming

doi:10.1016/j.polymer.2008.09.025

Cited by 367 publications

(264 citation statements)

References 33 publications

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“…These nanofibers were slightly thinner than the PVA-NF. The slight variations of fiber diameters observed for the nanofiber samples were possibly due to differences in viscosity and conductivity of the solutions [1,2,32]. The viscosity, conductivity and AFD values of PVA, PVA/AITC and PVA/AITC/␤-CD-IC solutions are shown in Table 1.…”

Section: Morphology Analysis Of Nanofibersmentioning

confidence: 96%

Release and antibacterial activity of allyl isothiocyanate/β-cyclodextrin complex encapsulated in electrospun nanofibers

Aytaç

Doğan

Tekinay

et al. 2014

Colloids and Surfaces B: Biointerfaces

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a b s t r a c tAllyl isothiocyanate (AITC) is known as an efficient antibacterial agent but it has a very high volatility. Herein, AITC and AITC/␤-cyclodextrin (CD)-inclusion complex (IC) incorporated in polyvinyl alcohol (PVA) nanofibers were produced via electrospinning. SEM images elucidated that incorporation of AITC and AITC/␤-CD-IC into polymer matrix did not affect the bead-free fiber morphology of PVA nanofibers. 1 H-NMR and headspace GC-MS analyses revealed that very low amount of AITC was remained in PVA/AITC-NF because of the rapid evaporation of AITC during the electrospinning process. Nevertheless, much higher amount of AITC was preserved in the PVA/AITC/␤-CD-IC-NF due to the CD inclusion complexation. The sustained release of AITC from nanofibers was evaluated at 30 • C, 50 • C and 75 • C via headspace GC-MS. When compared to PVA/AITC-NF, PVA/AITC/␤-CD-IC-NF has shown higher antibacterial activity against Escherichia coli and Staphylococcus aureus due to the presence of higher amount of AITC in this sample which was preserved by CD-IC.

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Section: Morphology Analysis Of Nanofibersmentioning

confidence: 96%

Release and antibacterial activity of allyl isothiocyanate/β-cyclodextrin complex encapsulated in electrospun nanofibers

Aytaç

Doğan

Tekinay

et al. 2014

Colloids and Surfaces B: Biointerfaces

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“…However, it has been reported by Vieira et al 38 that the ionic conductivity decreases with higher levels of acetic acid, which can be due to the formation of multiple ions. On the other hand, there is also evidence that the polymers have an influence on the electrical conductivity of the solution, since this property is mainly determined by the type of polymer and solvent used 11,39 . Figure 5 shows a plot of viscosity η versus shear rate.…”

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confidence: 99%

Electrospinning of Gelatin/Poly (Vinyl Pyrrolidone) Blends from Water/Acetic Acid Solutions

2015

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Electrospinning is a versatile and efficient technique for obtaining polymeric microfibers and nanofibers with great potential for applications in tissue engineering, biosensors, filtration, wound dressings, controlled drug release and enzyme immobilization. Electrospun fibers are obtained by applying an electric field in a polymer solution resulting in non-woven fibrous mats with high surface area relative to volume and high porosity. In this work, the electrospinning of gelatin/poly(vinyl pyrrolidone) (PVP) blends was investigated. The polymers were electrospun from solutions containing different concentrations of water and acetic acid. Solutions were characterized by measuring the pH, electrical conductivity, surface tension and viscosity. The influence of acetic acid concentration in solution properties and its influence in the spinnability were investigated. The resulting non-woven membranes were characterized by using scanning electron microscopy (SEM), thermogravimetric analysis (TG) and cytotoxicity.

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“…The content of Ti(OBu) 4 concentration decreases the charge density of polymer solution, which causes a lower repulsion and a lower bending instability during electrospinning process. 14 The three parameters that significantly affected the quality and dimensions of electrospun fibers were the composition of the polymer solution, applied voltage and the flow rate to the spinneret. Figure 2 shows the SEM images of electrospun PAN/ TiO 2 fiber mat from the PAN/DMF solutions with different Ti(OBu) 4 concentrations from 0 to 15 wt%.…”

Section: Resultsmentioning

confidence: 99%

Preparation and Characterization of Electrospun PAN/TiO₂Fiber Mat by Electron Beam Irradiation

Kang¹,

Jeun²,

Seo³

et al. 2012

Polymer Korea

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In this study, PAN/TiO 2 fiber mats were fabricated from polyacrylonitrile (PAN) and titanium(IV) butoxide (Ti(OBu) 4 ) by an electrospinning method with various solution concentrations, applied voltages and solution flow rates. The fiber mats were irradiated with an electron beam to induce structural crosslinking and enhance photocatalytic activity. As a result, uniform and bead-free fibers without pits or cracks on surface were obtained at 5 wt% of Ti(OBu) 4 solution with 15 kV and 0.02 mL/min flow rate. The PAN/TiO 2 fiber mats were irradiated with an electron beam of 1.14 MeV acceleration voltage, 4 mA of current and 1 × 10 4 kGy. Electron beam irradiation was enhanced the photocatalytic activity of PAN/TiO 2 nano fiber mat. The photocatalytic activity of the PAN/TiO 2 fiber mat was analyzed by degradation of methylene blue and volatile organic compounds.

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Electrospinning of uniform polystyrene fibers: The effect of solvent conductivity

Cited by 367 publications

References 33 publications

Release and antibacterial activity of allyl isothiocyanate/β-cyclodextrin complex encapsulated in electrospun nanofibers

Release and antibacterial activity of allyl isothiocyanate/β-cyclodextrin complex encapsulated in electrospun nanofibers

Electrospinning of Gelatin/Poly (Vinyl Pyrrolidone) Blends from Water/Acetic Acid Solutions

Preparation and Characterization of Electrospun PAN/TiO₂Fiber Mat by Electron Beam Irradiation

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Electrospinning of uniform polystyrene fibers: The effect of solvent conductivity

Cited by 367 publications

References 33 publications

Release and antibacterial activity of allyl isothiocyanate/β-cyclodextrin complex encapsulated in electrospun nanofibers

Release and antibacterial activity of allyl isothiocyanate/β-cyclodextrin complex encapsulated in electrospun nanofibers

Electrospinning of Gelatin/Poly (Vinyl Pyrrolidone) Blends from Water/Acetic Acid Solutions

Preparation and Characterization of Electrospun PAN/TiO2Fiber Mat by Electron Beam Irradiation

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Preparation and Characterization of Electrospun PAN/TiO₂Fiber Mat by Electron Beam Irradiation