Abstract
In the melt electrospinning process, the preparation of nanofibers is still a complex problem to be solved. It is challenging to predict fiber diameter using process parameters of melt electrospinning. This paper investigated the effect of jet phase transition displacement on the preparation of polypropylene microfibers by melt electrospinning with simulation and experimental methods. The images of the freezing points of the jet were collected by high-speed photography. The simulated freezing point locations are in good agreement with the experimental results. Additionally, the diameter of the resultant fibers under different temperature profiles by adjusting the nozzle temperature and auxiliary temperature were evaluated. The experimental results show that increasing nozzle and auxiliary temperatures can increase freezing length and decrease fiber diameter. This work aims to provide an effective method to control the fiber diameter of melt electrospun fibers.
Published Version
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