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Electrospinning: the technique

Uni -axial stretching of a visco -elastic solution (polymeric) by the mean of electrostatic forces. The resultant nonwoven provide very porous arrangement where the pores are interrelated in the structure, with an overall high surface area compared to regular textiles.

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Electrospinning: the technique

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  1. Uni-axial stretching of a visco-elastic solution (polymeric) by the mean of electrostatic forces. • The resultant nonwoven provide very porous arrangement where the pores are interrelated in the structure, with an overall high surface area compared to regular textiles. • The fibers can also be reinforced with nanoparticles, conferring different characteristics to the final product. Electrospinning: the technique

  2. Electrospinning: the technique http://nano.mtu.edu/Electrospinning_start.html Jeong Moon Seo , Dr. Patricia A. Heiden, Dr. Michael E. Mullins, Dr. Susan E. Hill

  3. Voltage Grounded Collector Positive Tip - - - - - + + + Electrospinning set-up ІІІІІІІ Syringe Pump Power Supply Tip-Collector Distance (TCD)

  4. Fiber diameter ES Conditions Polymeric solution Electric Field Flow Rate Tip-Collector Distance Fiber diameter can be tuned by modifying different conditions Solution properties Viscosity Conductivity Surface Tension High Voltage Electrospinning parameters Ambient parameters Temperature Humidity Air velocity Polymer fibers (μm-nm)

  5. Superior surface area • Controllable fiber surfaces, diameters, morphologies, structures, and functionalities • Improved mechanical performance • Diameters of fibers in the nano-order • Continuous single nanofibers Why Electrospun fibers?

  6. Electrospinning has recently received great attention in the fabrication of polymer nanofibers in a wide range of applications that demand high-performance materials for clothing, filtration, and biomedical materials. Other opportunities for electrospun fibers and ensuing structures include the fabrication of scaffolds for tissue engineering, in drug delivery, biosensors, and electronic and semi-conductive materials. Applications

  7. Maria S. Peresin, YoussefHabibi, Justin O. Zoppe, Joel J. Pawlak, and Orlando J.Rojas “Nanofiber Composites of Polyvinyl Alcohol and Cellulose Nanocrystals: Manufacture and Characterization”. Biomacromolecules 2010, 11, 674–681 • Justin O. Zoppe, Maria S. Peresin, YoussefHabibi, Richard A. Venditti, and Orlando J. Rojas “Reinforcing Poly(ε-caprolactone) Nanofibers with Cellulose Nanocrystals”. ACS Applied Materials and Interfaces 2009 , 1, 9, 1996-2004 • http://nano.mtu.edu/Electrospinning_start.htmlJeong Moon Seo , Dr. Patricia A. Heiden, Dr. Michael E. Mullins, Dr. Susan E. Hill. University of Michigan, 2005 • W.E. Teo, S. R., A review on electrospinning design and nonafibre assemblies. Nanotechnology 2006, 17, 89-106. • Bin Ding, H.-Y. K., Se-Chul Lee, Chang-Lu Shao, Douk-Rae Lee, Soo-Jin Park, Gyu-BeomKwag, Kyung-JuChoi, Preparation and Characterization of a Nanoscale Poly (vinyl alcohol) Fiber Aggregate Produced by an Electrospinning Method. Journal of Polymer Science: Part B: Polymer Physics 2002, 40, 1261-1268. • Bin Ding, H.-Y. K., Se-Chul Lee, Douk-Rae Lee, Kyung-JuChoi, Preparation and characterization of a nanoscaled Poly(vinyl alcohol) fibers via electrospinning. Fibers and Polymers 2002, 3, (2), 73-79. • U.S. Sajeev, K. A. A., DeepthyMenon, Shanti Nair, Control of nanostructures in PVA, PVA/chitosan blends and PCL through electrospinning. Indian Academy of Science 2008, 31, (3), 343-351. • M.A.Samir; F. Alloin; Dufresne, A., Review of recent research into cellulosic whiskers, their properties and their application in nanocomposite field. Biomacromolecules2005, 6, 612-626. References

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