以电纺聚氨酯(Pu)纤维膜为基底,用滴涂聚苯胺(PANI)的方法制备了具有不对称结构的PANI/PU双层薄膜气致驱动器.研究结果表明,在HCl气体的诱导下,该PANL/PU双层膜表现出弯曲-恢复的形变行为,这与HCl对聚苯胺的吸/脱附及掺杂/脱掺杂有关.此外,对驱动器承重的研究结果表明,PANI/PU双层人工智能肌肉可承重其自身重量的9倍以上,显示出良好的承重能力.%Polyaniline(PANI) and its derives have emerged as a group of most promising organic conducting polymers due to its iow cost, easy preparation, excellent environmental stability, facile redox and pH switching behavior. Particularly, its response to electrochemical and chemical doping-dedoping process, can produce changes in conductivity, color volume, and so forth, they have been widely used in a variety of nonvolatile memory, chemical sensors, actuators, and so on. Polyaniline/polyurethane(PANI/PU) bilayer actuators were fabricated using PAN1 nanofibers as active material and electrospun polyurethane(PU) fibers as substrate. It was found that the PANI/PU bilayer actuators underwent bending-recovery movement induced by hydrochloride vapor. The deformation mechanism of the bilayer actuators might result from asymmetric volume expansion/contraction because of doping/dedoping and sorption/desorption of chemical vapors. Moreover, the PANI/PU bilayer actuator could carry over 9 times its own weight due to the high toughness of PU fibers, displaying the well load-bearing capacity. Because the PANI/PU actuator is ultra-lightweight, low cost and simple operation,it is advantageous for practical applications in the future. However, actuating performance of the bilayer like lifetime, deformability still need to be improved.
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