A novel method of manufacturing three-dimensional ionic polymer-metal composites (IPMCs) biomimetic sensors, actuators and artificial muscles
A novel method of manufacturing three-dimensional ionic polymer-metal composites (IPMCs) biomimetic sensors, actuators and artificial muscles
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DOI：
10.1016/s0032-3861(01)00648-6
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发表时间：
2002-02-01
期刊：
影响因子：
4.6
通讯作者：
Shahinpoor, M
中科院分区：
文献类型：
--
作者：
Kim, KJ;Shahinpoor, M
所有市售的（已收到的）全氟离子交换聚合物都是水解聚合物的形式，是半结晶的，可能含有离子团簇。这些聚合物的膜形式具有大约100-300微米的典型厚度。如此薄的商用膜厚度允许在各种化学过程中使用快速传质。虽然用这些离子交换膜制成的离子聚合物-金属复合材料（IPMC）人造肌肉已经显示出巨大的潜力，可以产生悬臂形式的大弯曲位移和高力密度（最大力大于其自重的40倍），但要在许多实际设备中利用大的力，需要制造和制造三维IPMC。了解到这种接收的半结晶膜不能熔化加工，它们不适合制造三维电活性材料或其他复合形式。在这项工作中，作者报告了一种新开发的制造方法，可以将IPMC人造肌肉按比例放大或缩小到微米到厘米厚度的条形尺寸。我们采用了Moor等人最近开发的技术[J Membr Sci 75(1992) 7]将接收到的离子交换膜溶解在合适的溶剂中。通过仔细地将溶剂从溶液中蒸发出来，得到了重铸的离子交换膜。实验结果表明，成功制备的厚度为2mm、宽度为5min、长度为15mm的IPMC条带，在小电压下产生的生成力（尖端力）大于20gmf，位移约为半厘米。2001爱思唯尔科学有限公司版权所有。
All commercially available (as-received) perfluorinated ion-exchange polymers are in the form of hydrolyzed polymers and are semicrystalline and may contain ionic clusters. The membrane form of these polymers has a typical thickness in the range of approximately 100-300 mum. Such a thin thickness of commercially available membranes permits fast mass transfer for use in various chemical processes. Although ionic polymer-metal composite (IPMC) artificial muscles made with these ion-exchange membranes have shown a great potential to produce large bending displacements in cantilever form and high force densities (maximum force greater than 40 times of its own weight), achieving large forces to be utilized in many practical devices requires manufacturing and fabrication of three-dimensional IPMCs. Knowing that such as-received semi-crystalline membranes are not melt-process able, they are not suitable for the fabrication of three-dimensional electroactive materials or other composite forms. In this work, the authors report a newly developed fabrication method that can scale-up or down the IPMC artificial muscles in a strip size of micro-to-centimeter thickness. We have adopted a recently developed technique by Moor et al. [J Membr Sci 75 (1992) 7] for dissolving as-received ion-exchange membranes in appropriate solvents. By carefully evaporating solvents out of the solution, recasted ion-exchange membranes were obtained. The test results showed that a successfully fabricated IPMC strip in a size of 2 mm thickness, 5 min width, and 15 mm length, produces generative forces (tip forces) more than 20 gmf up to approximately a half centimeter-displacement under a small voltage. (C) 2001 Elsevier Science Ltd. All rights reserved.