Effect of electrospinning parameters on the nanofiber diameter and length.
Effect of electrospinning parameters on the nanofiber diameter and length.
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DOI：
10.1016/j.msec.2008.10.037
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发表时间：
2009-04-30
影响因子：
7.9
通讯作者：
Wen, Xuejun
中科院分区：
文献类型：
--
作者：
Beachley, Vince;Wen, Xuejun
聚合物纳米纤维的性能使其成为开发组织工程支架、过滤设备、传感器和高强度轻质材料的有利材料。静电纺丝是一种常用的制造聚合物纳米纤维的通用方法。在两个平行板上收集电纺纳米纤维是一种对创建纳米纤维结构有用的技术，因为它允许线性取向的单个纳米纤维阵列的收集，并且这些阵列可以容易地转移到其他衬底或结构上。重要的是要对这种收集方法的能力有一些了解，例如可以跨两个平行板收集的纤维的最大长度。探讨了不同电纺工艺参数对纤维最大长度、平均直径、直径整齐度和纤维品质的影响。结果表明，较长的连续聚己内酯(PCL)纳米纤维可以通过平行板收集，长度可达35-50 cm，平均直径约为350 nm~1µm。实验结果提出假设，如果平行板的尺寸增大，可以收集到更长的超过50厘米的连续纳米纤维。延长可以在平行板上收集的最大纤维长度可以扩大静电纺丝的应用。聚合物溶液浓度、板材尺寸和外加电压对最大纤维长度、纤维直径和纤维均匀度都有不同程度的影响。
Polymer nanofibers exhibit properties that make them a favorable material for the development of tissue engineering scaffolds, filtration devices, sensors, and high strength lightweight materials. Electrospinning is a versatile method commonly used to manufacture polymer nanofibers. Collection of electrospun nanofibers across two parallel plates is a technique useful for creating nanofiber structures because it allows for the collection of linearly oriented individual nanofiber arrays and these arrays can be easily transferred to other substrates or structures. It is of importance to have some understanding of the capabilities of this collection method, such as the maximum length of fibers that can be collected across two parallel plates. The effect of different electrospinning parameters on maximum fiber length, average fiber diameter, diameter uniformity, and fiber quality was explored. It was shown that relatively long continuous polycaprolactone (PCL) nanofibers with average diameters from approximately 350 nm to 1 µm could be collected across parallel plates at lengths up to 35–50 cm. Experimental results lead to the hypothesis that even longer continuous nanofibers over 50 cm could be collected if the size of the parallel plates were increased. Extending the maximum fiber length that can be collected across parallel plates could expand the applications of electrospinning. Polymer solution concentration, plate size, and applied voltage were all shown to have varying effects on maximum fiber length, fiber diameter, and fiber uniformity.
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