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Effect of Solvents on the Structure of Electrospun PVP Fiber  

Park, Ju-Young (Department of Environmental Engineering, BK21 Team for Biohydrogen Production, Chosun University)
Lee, In-Hwa (Department of Environmental Engineering, BK21 Team for Biohydrogen Production, Chosun University)
Publication Information
Applied Chemistry for Engineering / v.19, no.5, 2008 , pp. 484-490 More about this Journal
Abstract
Electrospun of PVP (polyvinylpyrrolidone) ultra fine fibers were fabricated using various solvents including methanol, ethanol, 2-propanol, butanol, acetone, methylene chloride, and DMF, which possess different properties such as boiling point, dielectric constant, and dipole moment. Electrospun PVP fiber was influenced by viscosity, conductivity, and surface tension of spinning solution. Therefore, the electrospun PVP fiber was successfully prepared under critical conditions of viscosity > $0.114kg/m{\cdot}s$, conductivity > 1.02 mS/m, surface tension < 30.0 mN/m. In case of an ethanol solvent system, average diameter of PVP fiber increased from 1701 nm to 5454 nm as increased the applied voltage from 10 kV to 20 kV.
Keywords
electrospinning; polyvinylpyrrolidone (PVP); nanofiber; solvent effect;
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