Electrospinning Instabilities in the Drop Formation and Multi-Jet Ejection Part II: Various Nozzle Diameters for PVA (Polyvinyl Alcohol) Polymer Solution |
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| Authors: | Chang Suk Kong Seung Goo Lee Sung Hoon Lee Kyung Hwa Lee Hyun Woo Noh Wan Suk Yoo |
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| Institution: | 1. Marine Biopress Research Center , Pukyong National University , Busan, Republic of Korea;2. BK21 FTIT, Department of Advanced Organic Materials and Textile system, Engineering , Chungnam National University , Daejeon, Republic of Korea;3. Department of Organic Material Science and Engineering , Pusan National University , Busan, Republic of Korea;4. Department of Mechanical Engineering , Pusan National University , Busan, Republic of Korea |
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| Abstract: | Electrospinning is recognized as a simple and easy method to produce fibers with nanoscale diameters. However, the methods for controlling the shape, structure, and uniformity of electrospun fibers have not yet been fully investigated. In this research, the electrospinning jet behavior, corresponding nanofiber deposition, and average fiber diameter are examined for various nozzle diameters. Fluctuations in the sequence of drop growing, electrospinning, and/or termination of electrospinning are analyzed. We propose two different fluctuations according to nozzle diameter. The multi-jet ejections, that are closely related to the amount of nanoweb deposition and the deposition pattern, are explored. |
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| Keywords: | electrospinning elongation stress fluid flow nozzle diameter surface tension |
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