Investigation of the Optimum Electric Field for a Stable Electrospinning Process

Angammana, Chitral J.; Jayaram, S.

doi:10.1109/tia.2011.2180010

Cited by 20 publications

(13 citation statements)

References 14 publications

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“…The uniformity of the nanofibers was also maintained at 15 cm as the distance between the tip of the spinneret and the collector and the voltage of 14 kV. This was related to the characteristic electric field (voltage per distance) that was suffient enough to produce free-beaded β-CD:CA (32%(m/v)). The average diameter of free-beaded nanofibers obtained at the 0.5 mL·h –1 , 15 cm, and 14 kV as the optimum electrospinning parameters was found to be 382.12 ± 30.09 nm which can comfortably be reported as the average diameter of the nanofibers used in this study.…”

Section: Resultsmentioning

confidence: 99%

Greener Approach To Prepare Electrospun Antibacterial β-Cyclodextrin/Cellulose Acetate Nanofibers for Removal of Bacteria from Water

Nthunya

Masheane

Malinga

et al. 2016

ACS Sustainable Chem. Eng.

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This work reports the synthesis of β-cyclodextrin (β-CD)/cellulose (CA) nanofibers embedded with silver (Ag) and silver/iron (Ag/Fe) nanoparticles (NPs) via a benign process involving in situ electrospinning of the biopolymers with Ag and Fe salts. The electrospun nanocomposite fibers containing Ag+/Fe3+ ions were then subjected to UV photochemical reduction in the presence of water vapor under inert atmosphere to reduce the ions to zerovalent state. SEM and TEM revealed that the average diameter of the β-CD/CA nanofibers was 382.12 ± 30.09 nm and that the diameters of Ag and Ag/Fe NPs were 38.81 ± 8.21 nm and 56.29 ± 12.64 nm, respectively, after reduction. The XRD and EDS analysis confirmed the presence of the Ag and Fe NPs on the surface of the nanofibers. The effect of UV irradiation time on the reduction of the Ag+ and Fe3+ was studied by measuring the UV–vis absorbance of the reduced NPs. The biocidal effect of Ag and Ag/Fe was investigated using 12 different strains of bacteria. The Ag and Ag/Fe NPs embedded on the β-CD/CA nanofibers exhibited a strong biocidal effect on all of the bacteria strains.

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Section: Resultsmentioning

confidence: 99%

Greener Approach To Prepare Electrospun Antibacterial β-Cyclodextrin/Cellulose Acetate Nanofibers for Removal of Bacteria from Water

Nthunya

Masheane

Malinga

et al. 2016

ACS Sustainable Chem. Eng.

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“…Conventionally, in the ES process an increase in applied voltage results in fibers with reduced diameters. In addition several studies have demonstrated changes to the cone and jet structure during alterations to the applied voltage, which include geometrical variations (lengthening and reduction) in cone [60,61]. Considering the reduced deposition distance in EHDP (3 mm), cone deformation can have significant impact on the deposition contact point of a cone-jet.…”

Section: A N U S C R I P Tmentioning

confidence: 99%

Fabrication of patterned polymer-antibiotic composite fibers via electrohydrodynamic (EHD) printing

Wang

Chang

Ahmad

et al. 2016

Journal of Drug Delivery Science and Technology

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“…A main driver of fiber deposition is the magnitude and direction of the electrical field generated between the syringe needle and the target. 45,46 Our electrospun scaffolds were all constructed by utilizing the same electric field magnitude. Therefore, any influence of the electric field on fiber construct properties was likely due to varying directions or trajectories of the electric field.…”

Section: ■ Discussionmentioning

confidence: 99%

Patterned Electrospinning: A Method of Generating Defined Fibrous Constructs Influencing Cell Adhesion and Retention

Palomares

Ammann

Perez

et al. 2021

ACS Appl. Bio Mater.

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A critical component of tissue engineering is the ability to functionally replace native tissue stroma. Electrospinning is a technique capable of forming fibrous constructs with a high surface area for increased cell−material interaction and enhanced biocompatibility. However, physical and biological properties of electrospun scaffolds are limited by design controllability on a macroscale. We developed a methodology for generating electrospun scaffolds with defined patterns and topographic features to influence physical properties and biological interactions. Five unique design electrospinning target collectors were fabricated to allow for generation of defined polymeric scaffold patterns including lines, sinusoids, squares, zigzags, and solid. Poly(lacticco-glycolic) acid was electrospun under identical conditions utilizing these varied targets, and constructs generated were examined as to their physical configuration, mechanical and chemical properties, and their ability to foster vascular smooth muscle cell adhesion and retention at 24 h. Modifying collector designs led to significant differences in fiber target coverage ranging from 300 mm 2 for solid (100% of the target area) to 217.8 mm 2 for lines (72.6% of the target area). Measured fiber excess, residual open area, and contact angle (hydrophobicity) followed the same trend as fiber target coverage with respect to the collector pattern: lines > sinusoids > squares > zigzags > solid. Similarly, the line design allowed for the greatest cell adhesion and retention (258 ± 31 cells), whereas solid exhibited the lowest (150 ± 15 cells); p < 0.05. There was a strong direct correlation of cell adhesion to construct residual open area (R 2 = 0.94), normalized fiber excess (R 2 = 0.99), and fiber grammage (R 2 = 0.72), with an inverse relationship to fiber target coverage (R 2 = 0.94). Our results demonstrate the ability to utilize patterned collectors for modifying macroscopic and microscopic electrospun scaffold features, which directly impact cell adhesion and retention, offering translational utility for designing specific tissue constructs.

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Investigation of the Optimum Electric Field for a Stable Electrospinning Process

Cited by 20 publications

References 14 publications

Greener Approach To Prepare Electrospun Antibacterial β-Cyclodextrin/Cellulose Acetate Nanofibers for Removal of Bacteria from Water

Greener Approach To Prepare Electrospun Antibacterial β-Cyclodextrin/Cellulose Acetate Nanofibers for Removal of Bacteria from Water

Fabrication of patterned polymer-antibiotic composite fibers via electrohydrodynamic (EHD) printing

Patterned Electrospinning: A Method of Generating Defined Fibrous Constructs Influencing Cell Adhesion and Retention

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