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Rotary forcespinning was a method for fabricating fibers. Fiber was formed from the process of centrifugal force produced by high speed motors. This method has large production than other method. There are three stages of process fiber formation in rotary forcespinning: jet initiation, jet extension, and solvent evaporation. In this study the effect of solvent mixture on the fiber morphology will be examined. The polymer used in the experiment was polyvinylpyrrolidone (PVP) with the concentration of 10wt% and dissolved into the mixture of ethanol and acetone solvents. The morphology was investigate with optical microscope. The results showed that the large ratio of acetone solvents produced smaller fiber diameters and the less beaded structure.