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MORPHOLOGY PVC NANOFIBER, PRODUCED BY ELECTROSPINNING METHOD
Abstract
One of the most important characteristics investigated during the obtaining of polymer nanofibers is the mean fiber diameter, which depends on the technological parameters of the electrospinning process. Polyvinyl chloride (PVC) nanofibres were obtained on the NANON-01A, Japan. The following technological parameters were used to obtain nanofibers: voltage is in the range 15 to 30 kV, a solution feed rate is in the range of 0.3 to 1.0 mL/h, a distance between the collector and the tip of the syringe is in range 7.5 to 15 cm. During the work, the 15% solution of PVC in the mixture of solvents tetrahydrofuran: dimethylformamide (1:1 by volume) was used. The morphology of the polymer fibers was determined by micrographs obtained using an Olympus STM6 optical microscope. Images were processed in the ImageJ program. The mean diameter of the polymer fibers and their size distribution were determined from the photographs, depending on the feed rate of the solution and the applied voltage and the distance between the needle and the collector. It is shown that the feed rate of PVC solution, the applied voltage, the distance between the needle and the collector affects the mean diameter of electroformed nanofibers. Increasing the applied voltage from 15 kV to 30 kV leads to decrease in the diameter of the nanofibers from 350 nm to 270 nm. An increase in the feed rate of PVC solutions leads to an increase in the diameter of the obtained nanofibers from 320 nm to 450 nm with an increase in the feed rate of the solution from 0.3 to 1 mL/h. No change in the diameter of nanofibers was observed when changes the distance between the collector and the tip of the syringe.
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URL: https://imagej.nih.gov/ij/docs/intro.html (accessed 02.05.2019).
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