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http://dx.doi.org/10.7317/pk.2012.36.2.196

Preparation and Characterization of Electrospun Pullulan Webs  

Son, Tae-Won (School of Textiles, Yeungnam University)
Lee, Gun-Min (HTF Research Team, Kolon Fashion Material Research Institute)
Lee, Dong-Won (Department of Polymer-Nano Science and Technology, Chonbuk National University)
Lee, Ju-Hyun (Department of Textile Engineering, Yeungnam University)
Lim, Hak-Sang (Department of Bio&Environmental Engineering, Semyung University)
Publication Information
Polymer(Korea) / v.36, no.2, 2012 , pp. 196-201 More about this Journal
Abstract
Electrospinning is a versatile process used to prepare micro or nano sized fibers from various materials dissolved in volatile solvents. This study reports electrospun pullulan fibrous webs fabricated through electrospinning using water as a solvent. The electrospinning conditions such as pullulan (PUL) concentration and applied voltage were optimized in order to obtain smooth electrospun fibers. The concentration of PUL greatly influenced the viscosity and surface tension of PUL solution. PUL beaded electrospun fibers were obtained from PUL solutions with concentrations lower than 5 wt%, while homogenous electrospun fibers were prepared from solutions with high concentration and high viscosity. The average diameters of PUL fibers were decreased to 200 nm when the polymer concentration was kept at 10 wt% and the applied voltage was fixed at 15 kV during electrospinning. PUL electrospun fiber exhibited higher solubility, flexibility, softness and adhesive strength.
Keywords
electrospinning; pullulan; electrospun fibers; film; solubility;
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