Khan Ajahar, Jain Ravi Kant, Ghosh Bhaskar, Asiri Abdullah M
Micro Robotics Laboratory under Information Technology Group, CSIR-Central Mechanical Engineering Research Institute (CMERI) Durgapur 713209 India
Chemistry Department, Faculty of Science, King Abdulaziz University Jeddah 21589 Saudi Arabia.
RSC Adv. 2018 Jul 16;8(45):25423-25435. doi: 10.1039/c8ra03554g.
In the present work, sulfonated graphene oxide and sulfonated poly(1,4-phenylene ether-ether-sulfone) were blended with polyvinylidene fluoride to create a novel ionic polymer-metal composite actuator with enhanced performance. An ionic polymer-metal composite membrane in the protonated form was prepared by casting a composite blend of sulfonated poly(1,4-phenylene ether-ether-sulfone), polyvinylidene fluoride and sulfonated graphene oxide onto a plating of platinum metal as the electrode. The degree of sulfonation of poly(1,4-phenylene ether-ether-sulfone) was characterized using ion-exchange capacity measurements. Energy dispersive X-ray and transmittance electron microscopy analyses were carried out to analyze the chemical composition and detailed structure. Deposition of the platinum electrode and the surface morphology of the proposed ionic polymer-metal composite actuator were assessed using scanning electron microscopy analysis. The electrical properties were measured using cyclic voltammetry, linear sweep voltammetry and proton conductivity. These measurements confirmed the better actuation performance of the fabricated ionic polymer-metal composite actuator compared to other expensive ionic polymer-based actuators, in terms of its high ion-exchange capacity, good proton conductivity, high current density and large bending deflection. The robust, flexible and mechanically strong membrane actuator, fabricated the synergistic combination of sulfonated poly(1,4-phenylene ether-ether-sulfone), polyvinylidene fluoride and sulfonated graphene oxide, has considerable potential as an actuator material for robotic, bio-mimetic and other applications.
在本研究中,将磺化氧化石墨烯和磺化聚(1,4 - 亚苯基醚 - 醚砜)与聚偏二氟乙烯共混,以制备一种性能增强的新型离子聚合物 - 金属复合致动器。通过将磺化聚(1,4 - 亚苯基醚 - 醚砜)、聚偏二氟乙烯和磺化氧化石墨烯的复合共混物浇铸在作为电极的铂金属镀层上,制备了质子化形式的离子聚合物 - 金属复合膜。使用离子交换容量测量来表征聚(1,4 - 亚苯基醚 - 醚砜)的磺化程度。进行能量色散X射线和透射电子显微镜分析以分析化学成分和详细结构。使用扫描电子显微镜分析评估铂电极的沉积以及所提出的离子聚合物 - 金属复合致动器的表面形态。使用循环伏安法、线性扫描伏安法和质子传导率测量电学性能。这些测量结果证实,与其他昂贵的基于离子聚合物的致动器相比,所制备的离子聚合物 - 金属复合致动器在高离子交换容量、良好的质子传导率、高电流密度和大弯曲挠度方面具有更好的致动性能。由磺化聚(1,4 - 亚苯基醚 - 醚砜)、聚偏二氟乙烯和磺化氧化石墨烯的协同组合制备的坚固、柔性且机械强度高的膜致动器,作为机器人、仿生和其他应用的致动器材料具有相当大的潜力。