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Showing 1 to 20 of 218 for “"Electrospinning"”.
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Current measurements in electrospinning
Electrospinning provides an economical method of producing nanofibers. The current carried by the main spinning jet is found to be one of the factors in determining the diameter of the fiber product. However, current sources such as the corona discharge and secondary jets will lead to a systematic …
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Electrospinning polyampholyte nanofiber membranes
… work, nanoscale polymer fibers are formed using electrospinning. The solubility concern is addressed by cross-linking the copolymers following the formation of nanofibers using ultraviolet light initiated polymerization. When all other electrospinning conditions are held constant, it was shown …
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Electrospinning for pharmaceutical applications
… the new unit operations are chosen properly. Electrospinning, a method of making nanofiber mats from solutions of an active pharmaceutical ingredient (API), polymer and solvent, has shown great promise for producing final solid dosage forms with minimal process steps. In this thesis, we …
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ELECTROSPINNING ROBOT FOR REGENERATIVE COATING OF IMPLANTS
Electrospinning of nanofibrous mats and scaffolds enables generation of scaffolding that is not only highly porous, but also has a structure that essentially mimics the natural basement membrane. As a result, the method has proliferated extensively, and is commonly used for diverse applications …
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Characterization and Control of an Electrospinning Process
… jets provide information useful for control of electrospinning of polymer solutions. Combinations of videography, stereography, and methods for illumination of the multiple coils of an electrospinning jet path, that depend on bright glints of reflected light from the jet, recorded quantitative …
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Direct tablet formation by electrospinning and compaction
… to manufacture pharmaceutical tablets through an electrospinning operation and subsequent compaction. Theoretical simulations of the electrospinning were run to predict physical system performance, and a proof-of-concept device was designed, produced and tested. The process was demonstrated to be …
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Complex bioactive fiber systems by means of electrospinning
… which mimics the native cell environment. Electrospinning provides a simple route to access such fiber meshes. This thesis addresses the structural and functional control of electrospun fiber mats. In the first section, it is shown that fiber meshes with bimodal size distribution could be …
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Fem of electrospinning compared to inkjet printing model
Electrospinning is a process that uses electrostatic forces to produce nanofibers, or fibers in the nano scale. Nanofibers are widely used in many fields like drug delivery and tissue engineering. Nowadays, it is gaining much attention in the research community as an advantageous process. However, …
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Electrospinning applications in mechanochemistry and multi-functional hydrogel materials
… results in the formation of a polar species. Electrospinning, a process used to produce very small fibers, has the potential to be used in a number of applications in mechanochemistry. These very small fibers have been shown to possess high molecular orientation, which is a result of the high …
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Electrospinning as a Processing Method for Electroactive Polymers and Composites
Electrospinning was examined for its potential to create functional materials. Three distinct electroactive materials were electrospun into fibers and fiber mats and then characterized with the intent of determining their utility in aerospace and biomedical applications such as micro-air vehicles …
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Electrospinning of polymeric nanofiber materials : process characterization and unique applications
Electrospinning or electrostatic fiber spinning employs electrostatic force to draw a fiber from a spinneret. This fiber solidifies and lies down on a collector in the form of a non-woven fiber mat. Electrospinning has attracted much attention recently due to the ease with which fine fibers about …
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Near-Field Electrospinning and Characterization of Biodegradable Small Diameter Vascular Grafts
… relatively recent sub-technique of near-field electrospinning (NFES) represents a promising solution to create tissue engineering vascular grafts. These programmed large pore sizes are anticipated to promote in situ regeneration and improve the outcomes as well as the quality of life of …
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A Novel Technique for Fabricating Aligned Nanofibers by Using Solution Electrospinning
… by using new designed apparatus. Solution electrospinning has been used for nanofibers fabrication. During solution electrospinning, when two negative (-20kV) charged wheels and a positive (+20kV) charged needle were placed in the system, aligned nanofibers were collected on the grounded …
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Electrospinning of biphasic biopolymer and polymer : a feasibility and characterization study
Electrospinning of polymeric materials have been experimented to achieve nanoscaled diameters. The approaches to the current study are to combine a natural material such as collagen with synthetic materials and determine if the interactions between the materials can be used in the electrospinning …
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Direct-Write Electrospinning of Highly-Loaded Ceramic Slurries for Additive Manufacture
… of ceramic particles was explored, using electrospinning as the deposition method. Inks containing 50 vol% alumina powder in mineral oil or wax were deposited from a 200 μm inner diameter blunt, grounded needle at distances from 0.5 to 5.0 mm from a conductive plate with positive voltages …
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Microfluidic flow-focusing device for the electrospinning of hollow polymer nanofibers
… electrical, optical and biological properties. Electrospinning, which utilizes the destabilization of a fluid's surface in a strong electric field, has gained the most favor as a top-down approach to producing polymer nanofibers. In this work, a microfluidic device was designed and assembled for …
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Preparation and Electrochemical Testing of Flexible Carbon Nanofiber Electrodes from Electrospinning
… flexible carbon nanofiber electrodes by electrospinning and to explore various applications for those electrodes. It was found that by varying only the relative humidity while electrospinning a poly(acrylonitrile) precursor, fragile or flexible freestanding carbon nanofiber electrodes …
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Development of polymer based nanocomposite using electrospinning for sound absorption and isolation
… and polystyrene (PS), which were processed using electrospinning to produce nanofiber mats and tested for the sound absorption properties. To optimize fiber diameters, the process parameters were studied including the solution concentration, the solution flow rate, the high voltage used for …
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Fabrication of nanofiber scaffolds by electrospinning and it's potential for tissue engineering
Electrospinning is a fabrication process that uses an electric field to control the deposition of polymer fibers on to a target substrate. This electrospinning strategy can be used to fabricate fibrous polymer mats composed of fiber diameters ranging from several microns down to tens of nanometers. …
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