Artificial muscles based on polypyrrole actuators with large strain and stress induced electrically
Artificial muscles based on polypyrrole actuators with large strain and stress induced electrically
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DOI：
10.1295/polymj.36.151
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发表时间：
2004-01-01
期刊：
影响因子：
2.8
通讯作者：
Kaneto, K
中科院分区：
文献类型：
--
作者：
Hara, S;Zama, T;Kaneto, K
导电聚合物致动器由于其电致应力(3-5 Mpa)，是脊椎动物肌肉纤维的10倍(0.35 Mpa)，一直吸引着需要强大而轻巧的致动器的研究人员和工程师。然而，适度的电力产生的应变(1-3%)限制了它们在机器人中的应用，因此相对巨大和重型的电机不可避免地被用于机器人行业。由四正丁基四氟硼酸铵(TBABF(4))的苯甲酸甲酯溶液在钛电极上电化学制备的聚吡咯(PPy)薄膜在NaPF6水溶液中产生12.4%的应变和22 Mpa的应力。掺杂BF4(-)的PPy具有较大的电化学应变和应力，应能满足人工肌肉的应用，特别是在需要较大作用力的情况下。这些新型导电聚合物致动器可以极大地改变任何与运动有关的技术。除了PPy执行器的基本性质外，一些新设计的实用执行器结构也很重要。尤其是在需要多层PPy薄膜来提高作用力的情况下，柔性和韧性的掺CF3SO3的PPy薄膜比掺BF4的PPy薄膜更适合制作驱动器器件。
Conducting polymer actuators have been attracting researchers and engineers who need powerful and light actuators because of their electrically induced stress (3-5 MPa), 10 times larger than that (0.35 MPa) of vertebrate muscle fibres. The moderate electrically generated strain (1-3 %) has however been restricting their applications to robots, for instance, and therefore relatively huge and heavy electric motors have been inevitably used in the robotic industry. A polypyrrole (PPy) film, which was prepared electrochemically from methyl benzoate solution of tetra-n-butylammonium tetrafluoroborate (TBABF(4)) on Ti electrode, exhibited 12.4 % strain and 22 MPa stress generated electrochemically in NaPF6 aqueous solution. The large electrochemical strain and stress of BF4(-)-doped PPy should meet applications of artificial muscles particularly where strong force is required. These novel conducting polymer actuators could dramatically alter any technologies concerning movements. Besides fundamental properties of the PPy actuators, some newly-devised configurations of the actuators for practical use are important. In order to fabricate actuator devices particularly where multiple layers of PPy films were required to increase force, flexible and tough CF3SO3--doped PPy films were more suitable than BF4--doped PPy.