| 초록 |
Electrospinning is a process that produces continuous polymer fibers with diameter in the sub-micronrange through the action of an external electric field imposed on a polymer solution. Polypropylene(PP) nanofibers were fabricated by co-electrospinning technique. In this work, the influence of solvents and their properties on electro-spinnability of theas-prepared polypropylene solutions and the morphological appearance of the obtained PP fibers were investigated qualitatively by means of scanning electron microscope(SEM). A mixed solvents in Toluene and DMF have successfully used in the electrospinning process of polypropylene. When DMF was added to Toluene to attain mixed solvent systems, the diameters of the electrospun PP fibers became bigger and the beaded fibers earlier observed disappeared. The reason was claimed to the increase in viscosity, surface tension and conductivity of the mixed solvent, respectively. |
