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http://dx.doi.org/10.3795/KSME-B.2005.29.4.512

Fabrication of Polycarbonate Nano Fibers Using Electrospinning  

Kim Giltae (부산대학교 기계공학과)
Park Sangkyoung (부산대학교 기계공학과)
Lee Jaekeun (부산대학교 기계공학과)
Ahn Youngchull (부산대학교 기계기술연구소)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.29, no.4, 2005 , pp. 512-518 More about this Journal
Abstract
Polymeric fibers with nanometer-scale diameters are produced by electrospinning. When the electrical forces at the surface of a polymer solution or melt overcome the surface tension then electrospinning occurs. Polycarbonate has been electrospun. Electrospun fibers are observed by scanning electron microscopy and transmission electron microscopy. The surface morphology of e-spun fiber has been studied by many variables that are involved in different polymer concentrations, solvent mixing ratios and ambient parameters. The average diameters of the electrospun fibers range from 200 nm to 4,570 nm when the PC concentration is decreasing from 15.5\;wt{\%}\;to\;25\;wt{\%}.$ The higher concentration of the polymer solution makes the fibers thicker due to preventing the fiber stretching. With respect evaporation effects, the solvent mixing ratios cause significant changes of the fiber size distribution. As a matter of fact the fiber diameter steadily increases with increasing amount of DMF until the solvent mixture is at THF:DMF ratio of 60:40.
Keywords
Electrospinning; Nanofiber; Electrospun Fiber;
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