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Experimental investigation on flow modes of electrospinning 被引量:1
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作者 Ting Si Guang-Bin Li +2 位作者 Xing-Xing Chen rui-jun tian Xie-Zhen Yin 《Acta Mechanica Sinica》 SCIE EI CAS CSCD 2012年第3期644-652,共9页
Electrospinning experiments are performed by using a set of experimental apparatus, a stroboscopic system is adopted for capturing instantaneous images of the cone- jet configuration. The cone and the jet of aqueous s... Electrospinning experiments are performed by using a set of experimental apparatus, a stroboscopic system is adopted for capturing instantaneous images of the cone- jet configuration. The cone and the jet of aqueous solutions of polyethylene oxide (PEO) are formed from an orifice of a capillary tube under the electric field. The viscoelastic con- stitutive relationship of the PEO solution is measured and discussed. The phenomena owing to the jet instability are described, five flow modes and corresponding structures are obtained with variations of the fluid flow rate Q, the electric potential U and the distance h from the orifice of the cap- illary tube to the collector. The flow modes of the cone-jet configuration involves the steady bending mode, the rotat- ing bending mode, the swinging rotating mode, the blurring bending mode and the branching mode. Regimes in the Q-U plane of the flow modes are also obtained. These results may provide the fundamentals to predict the operating conditions expected in practical applications. 展开更多
关键词 Electrospinning - Flow mode Jet instability Non-Newtonian fluid Ultrafine fiber
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