Abstract During the last decade, electrostrictive polymers have stood out especially in electromechanical applications because of their high-strain performance. The electrostrictive ability of a polymers is indicated by its electrostrictive coefficient (M) that depends on dielectric constant and Young's modulus. The dielectric constant of a polymer can be increased with fillers to create promising candidate materials for actuators and energy harvesting, because of interfacial polarization at matrix-filler interfaces. Therefore, a large specific interfacial surface is of importance. In this study, fibers were fabricated by electrospinning Polyurethane/Polyaniline (PU/PANI) composites with 0.5, 1, 1.5, or 2 wt% PANI loadings in the spinner. Then, morphology and chemical structure of the obtained fibers were investigated by SEM and FTIR, respectively. The electrical properties, mechanical properties, and electrostrictive properties were also evaluated. The results show that the average spun fiber diameter, its distribution, and occurrence of spider-web conformations depend strongly on the PANI content. Moreover, the dielectric constant increased with PANI loading and was inversely proportional to Young's modulus. The electrostrictive coefficient increased with PANI content and was for the spun fibers about 6 fold that of composite films, which was partly attributed to the spider-web conformations of the fibers.

中文翻译：

---

具有聚苯胺（翡翠盐）蜘蛛网网络的电致伸缩聚氨酯复合纤维中增强的电场诱导应变

摘要 在过去的十年中，电致伸缩聚合物因其高应变性能而在机电应用中脱颖而出。聚合物的电致伸缩能力由其电致伸缩系数 (M) 表示，该系数取决于介电常数和杨氏模量。由于基质-填料界面处的界面极化，聚合物的介电常数可以通过填料增加，从而为致动器和能量收集创造有前景的候选材料。因此，大的比界面是重要的。在这项研究中，通过静电纺丝聚氨酯/聚苯胺 (PU/PANI) 复合材料制造纤维，纺丝器中的 PANI 负载量为 0.5、1、1.5 或 2 wt%。然后，通过SEM和FTIR研究所得纤维的形貌和化学结构，分别。还评价了电性能、机械性能和电致伸缩性能。结果表明，平均纺成纤维直径、其分布和蜘蛛网构象的出现在很大程度上取决于 PANI 含量。此外，介电常数随着 PANI 负载的增加而增加，并且与杨氏模量成反比。电致伸缩系数随着 PANI 含量的增加而增加，纺制纤维的电致伸缩系数约为复合薄膜的 6 倍，这部分归因于纤维的蜘蛛网构象。介电常数随着 PANI 加载而增加，并且与杨氏模量成反比。电致伸缩系数随着 PANI 含量的增加而增加，纺制纤维的电致伸缩系数约为复合薄膜的 6 倍，这部分归因于纤维的蜘蛛网构象。介电常数随着 PANI 加载而增加，并且与杨氏模量成反比。电致伸缩系数随着 PANI 含量的增加而增加，纺制纤维的电致伸缩系数约为复合薄膜的 6 倍，这部分归因于纤维的蜘蛛网构象。