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Controlled deposition of electrospun poly(ethylene oxide) fibers

Controlled deposition of electrospun poly(ethylene oxide) fibers,10.1016/S0032-3861(01)00336-6,Polymer,J. M. Deitzel,J. D. Kleinmeyer,J. K. Hirvonen,N

Controlled deposition of electrospun poly(ethylene oxide) fibers   (Citations: 133)
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Electrospinning is a process by which sub-micron polymer fibers can be produced using an electrostatically driven jet of polymer solution (or polymer melt). Electrospun fibers are typically collected in the form of non-woven mats, which are of interest for a variety of applications including semi-permeable membranes, filters, composite reinforcement, and scaffolding used in tissue engineering. A characteristic feature of the electrospinning process is the onset of a chaotic oscillation of the electrospinning jet. The current work demonstrates the feasibility of dampening this instability and controlling the deposition of sub-micron polymer fibers (<300nm in diameter) on a substrate through use of an electrostatic lens element and collection target of opposite polarity. Real-time observations of the electrospinning process have been made using high-speed, high-magnification imaging techniques. Fiber mats and yarns electrospun from polyethylene oxide have been analyzed using wide-angle X-ray diffraction (WAXD), optical microscopy, and environmental scanning electron microscopy (ESEM).
Journal: Polymer , vol. 42, no. 19, pp. 8163-8170, 2001
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    • ...In the past few years, a great number of novel electrospinning equipments with improved designs or additional setups, such as using a rotating cylinder or disc, two parallel electrodes separated by a gap as collector, 53 55 introducing insulators to grounded collector to influence the fiber deposited position, 56 adding an assistant magnetic field to alter the fiber trajectory in the spinning process, 57 , 58 have been well developed to alter the resultant fiber assembled structures to obtain the designed fibrous mats with expected structures and functionalities...

    Jinyou Linet al. Biomimicry via Electrospinning

    • ...Concentrations too low generate in the electrospinning process a mixture of fibers and droplets; those too high produce a solution extremely difficult to force through the syringe needle 13...

    Wahyudionoet al. Production of nanofibers by electrospinning under pressurized CO2

    • ...Methods have been developed to control the fiber deposition area, for example by placing charged rings in the electrospinning zone (Deitzel, Kleinmeyer, Hirvonen, & Beck Tan, 2001), using additional electric field on the fiber collector (Wu, Carnell, & Clark, 2007), covering the spinning nozzle with an insulator tube (Yang, Jia, & Guan, 2005), or altering the collector geometry (Teo, Kotaki, Mo, & Ramakrishna, 2005)...

    Usman Aliet al. Effect of nozzle polarity and connection on electrospinning of polyacr...

    • ...[27], was directed towards the obtaining of submicron fibers with an average diameter in the range of 100 nm–5 μm [28–31] via a simple electrospinning process, which is able to create materials with applications in the area of optical and chemosensor materials, nanocomposites, nanofibers with specific surface chemistry for tissue scaffolds and drug delivery systems [32–34]...

    Emil C. Buruianaet al. Preparing and structuring of block copolymers with cinnamate and adama...

    • ...Concentrations too low generate in the electrospinning process a mixture of fibers and droplets; those too high produce a solution extremely difficult to force through the syringe needle 13...

    Wahyudionoet al. Production of nanofibers by electrospinning under pressurized CO2

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