Coaxial electrospinning with sodium dodecylbenzene sulfonate solution for high quality polyacrylonitrile nanofibers

Yu, Deng‐Guang; Williams, Gareth R.; Gao, Li-Dong; Bligh, S. W. Annie; Yang, Jing; Wang, Xia

doi:10.1016/j.colsurfa.2011.12.063

Cited by 61 publications

(25 citation statements)

References 44 publications

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“…The primary reason that the sheath solution acts to thin the nanofibers is that it prevents evaporation of solvents from the surface of the core spinning polymer solutions prematurely, and in turn retains the core jet in a fluid state thus allowing it to be subjected to electrical drawing for a longer period in the unstable region. [26][27][28] During the modified process, the electrospinnable core fluid jets had sufficient viscoelastic forces to balance Coulomb forces so allowing an even and continuous drawing. However, the sheath Ag + solution should break up into separate segments along the core PAN fluid jets due to lack of viscoelasticity at a certain place in the bending and whipping region as determined by the sheath rate ratio.…”

Section: Morphologymentioning

confidence: 99%

“…Later advances involved adding surfactants and salts to the sheath fluids so as to manipulate the conductivity and surface tension of sheath solutions for a better coaxial electrospinning process and produce nanofibers with even smaller diameters and a smooth surface morphology. [23][24][25][26][27][28][29] However in all the abovementioned reports, the modified coaxial electrospinning processes generated nanofibers with improved quality in terms of nanofiber diameter, diameter distribution, as well as nanofiber morphology, but no attempts were made to modify the nanofibers so as to improve their functionality and enhance their nascent efficiency.…”

Section: Introductionmentioning

confidence: 99%

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Polyacrylonitrile nanofibers coated with silver nanoparticles using a modified coaxial electrospinning process

Yu¹,

Zhou²,

Chatterton³

et al. 2012

IJN

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Background:The objective of this investigation was to develop a new class of antibacterial material in the form of nanofibers coated with silver nanoparticles (AgNPs) using a modified coaxial electrospinning approach. Through manipulation of the distribution on the surface of nanofibers, the antibacterial effect of Ag can be improved substantially. Methods: Using polyacrylonitrile (PAN) as the filament-forming polymer matrix, an electrospinnable PAN solution was prepared as the core fluid. A silver nitrate (AgNO 3 ) solution was exploited as sheath fluid to carry out the modified coaxial electrospinning process under varied sheath-to-core flow rate ratios. Results: Scanning electron microscopy and transmission electron microscopy demonstrated that the sheath AgNO 3 solution can take a role in reducing the nanofibers' diameters significantly, a sheath-to-core flow rate ratio of 0.1 and 0.2 resulting in PAN nanofibers with diameters of 380 ± 110 nm and 230 ± 70 nm respectively. AgNPs are well distributed on the surface of PAN nanofibers. The antibacterial experiments demonstrated that these nanofibers show strong antimicrobial activities against Bacillus subtilis Wb800, and Escherichia coli dh5α. Conclusion: Coaxial electrospinning with AgNO 3 solution as sheath fluid not only facilitates the electrospinning process, providing nanofibers with reduced diameters, but also allows functionalization of the nanofibers through coating with functional ingredients, effectively ensuring that the active antibacterial component is on the surface of the material, which leads to enhanced activity. We report an example of the systematic design, preparation, and application of a novel type of antibacterial material coated with AgNPs via a modified coaxial electrospinning methodology.

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Section: Morphologymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Polyacrylonitrile nanofibers coated with silver nanoparticles using a modified coaxial electrospinning process

Yu¹,

Zhou²,

Chatterton³

et al. 2012

IJN

Self Cite

View full text Add to dashboard Cite

show abstract

“…The process became a single-fluid electrospinning process when sheath fluid delivery was stopped. An alligator clip was used to connect the inner stainless steel capillary with the high voltage supply (14,24).…”

Section: The Modified Coaxial Electrospinning Processmentioning

confidence: 99%

“…The first one is that it can prepare nanofibers from materials that lack filament-forming properties using traditional coaxial electrospinning process, where the sheath fluid often has good electrospinnability while the core fluid is unelectrospinnable (21)(22)(23). The second one is a modified coaxial electrospinning process first reported by Yu et al (24,25), where only unspinnable solvent is employed as sheath fluid. Through replacing the traditional interface between polymer jets and atmosphere partially by the interface between polymer jets and sheath solvents, the modified coaxial electrospinning opens a new way for generating nanofibers from polymer solutions.…”

Section: Introductionmentioning

confidence: 99%

“…Through replacing the traditional interface between polymer jets and atmosphere partially by the interface between polymer jets and sheath solvents, the modified coaxial electrospinning opens a new way for generating nanofibers from polymer solutions. The modified coaxial process has been demonstrated to be a useful tool in preventing clogging of spinneret for continuous preparation of pure polymer nanofibers such as polyvinylpyrrolidone and polyacrylonitrile (24)(25)(26).…”

Section: Introductionmentioning

confidence: 99%

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Drug-Loaded Zein Nanofibers Prepared Using a Modified Coaxial Electrospinning Process

Huang

Zou

et al. 2013

AAPS PharmSciTech

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Abstract. This study investigated the preparation of drug-loaded fibers using a modified coaxial electrospinning process, in which only unspinnable solvent was used as sheath fluid. With zein/ibuprofen (IBU) co-dissolving solution and N, N-dimethylformamide as core and sheath fluids, respectively, the drug-loaded zein fibers could be generated continuously and smoothly without any clogging of the spinneret. Field emission scanning electron microscopy and transmission electron microscopy observations demonstrated that the fibers had ribbon morphology with a smooth surface. Their average diameters were 0.94±0.34 and 0.67±0.21 μm when the sheath-to-core flow rate ratios were taken as 0.11 and 0.25, respectively. X-ray diffraction and differential scanning calorimetry verified that IBU was in an amorphous state in all fiber composites. Fourier transform infrared spectra showed that zein had good compatibility with IBU owing to hydrogen bonding. In vitro dissolution tests showed that all the fibers could provide sustained drug release files via a typical Fickian diffusion mechanism. The modified coaxial electrospinning process reported here can expand the capability of electrospinning in generating fibers and provides a new manner for developing novel drug delivery systems.

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Methods and Challenges in the Fabrication of Biopolymer‐Based Scaffolds for Tissue Engineering Application

Ivanov¹

2023

Functional Biomaterials

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Coaxial electrospinning with sodium dodecylbenzene sulfonate solution for high quality polyacrylonitrile nanofibers

Cited by 61 publications

References 44 publications

Polyacrylonitrile nanofibers coated with silver nanoparticles using a modified coaxial electrospinning process

Polyacrylonitrile nanofibers coated with silver nanoparticles using a modified coaxial electrospinning process

Drug-Loaded Zein Nanofibers Prepared Using a Modified Coaxial Electrospinning Process

Methods and Challenges in the Fabrication of Biopolymer‐Based Scaffolds for Tissue Engineering Application

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