Bending instability in electrospinning of nanofibers
Bending instability in electrospinning of nanofibers
复制标题
DOI：
10.1063/1.1333035
复制
发表时间：
2001-03-01
影响因子：
3.2
通讯作者：
Reneker, DH
中科院分区：
文献类型：
--
作者：
Yarin, AL;Koombhongse, S;Reneker, DH
本文提出了一种局部化近似方法来计算作用在带电聚合物射流上的弯曲电场力，该电场力是静电纺丝制备纳米纤维的关键因素。利用这种力，建立了电驱动弯曲不稳定性和气动驱动不稳定性之间的深远类比。连续，准一维，偏微分方程推导和预测的增长率的小电驱动的弯曲扰动的液柱。这些方程的离散化形式，占溶剂蒸发和聚合物固化，被用来计算在非线性弯曲不稳定的过程中，导致形成大的循环，并导致在纳米纤维的喷射路径。计算结果进行了比较，在本工作中获得的实验数据。讨论了理论与实验的一致性。(C)2001年美国物理学会。
A localized approximation was developed to calculate the bending electric force acting on an electrified polymer jet, which is a key element of the electrospinning process for manufacturing of nanofibers. Using this force, a far reaching analogy between the electrically driven bending instability and the aerodynamically driven instability was established. Continuous, quasi-one-dimensional, partial differential equations were derived and used to predict the growth rate of small electrically driven bending perturbations of a liquid column. A discretized form of these equations, that accounts for solvent evaporation and polymer solidification, was used to calculate the jet paths during the course of nonlinear bending instability leading to formation of large loops and resulting in nanofibers. The results of the calculations are compared to the experimental data acquired in the present work. Agreement of theory and experiment is discussed. (C) 2001 American Institute of Physics.