Flight path of electrospun polystyrene solutions: Effects of molecular weight and concentration
Flight path of electrospun polystyrene solutions: Effects of molecular weight and concentration
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DOI：
10.1016/j.matlet.2006.07.052
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发表时间：
2007-03-01
影响因子：
3
通讯作者：
Shivkumar, Satya
中科院分区：
文献类型：
--
作者：
Eda, Goki;Liu, James;Shivkumar, Satya
静电纺丝过程中溶液射流的行为是电、表面张力和粘弹力之间平衡的结果。众所周知，溶液流变学对电纺聚合物的结构有显着影响，也可能影响射流的演变和分解。利用高速摄像机（2000帧/秒）研究了聚合物分子量和浓度对聚苯乙烯溶液射流行为的影响。结果表明，拉伸流动，弯曲不稳定性和射流分支的程度取决于聚合物的分子量和浓度。有人观察到，射流变薄和凝固可能发生在不同的距离从毛细管时，流变条件是不同的。(c)2006 Elsevier B. V.保留所有权利。
The behavior of the solution jet during electrospinning is a consequence of the balance between electrical, surface tension, and viscoelastic forces. Solution rheology, which is known to have a significant effect on the structure of the electrospun polymer, may also affect jet evolution and breakdown. In this study, the effect of polymer molecular weight and concentration on the behavior of polystyrene solution jet was investigated using high speed camera (2000 frames/s). The results indicate that the degree of elongational flow, bending instability, and jet branching depends on polymer molecular weight and concentration. It was observed that jet thinning and solidification may occur at different distances from the capillary when the rheological conditions are varied. (c) 2006 Elsevier B.V. All rights reserved.