聚环氧乙烷增强离子聚合物-金属复合致动器的性能

Performance Enhancement of Ionic Polymer-Metal Composite Actuators with Polyethylene Oxide.

作者信息

Zhao Dongxu, Ru Jie, Wang Tong, Wang Yanjie, Chang Longfei

机构信息

College of Mechanical and Electrical Engineering, Inner Mongolia Agricultural University, Hohhot 010018, China.

Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education, School of Chemistry and Materials Science, Huaibei Normal University, Huaibei 235000, China.

出版信息

Polymers (Basel). 2021 Dec 26;14(1):80. doi: 10.3390/polym14010080.

DOI:10.3390/polym14010080

PMID:35012104

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8747705/

Abstract

Current ionic polymer-metal composite (IPMC) always proves inadequate in terms of large attenuation and short working time in air due to water leakage. To address this problem, a feasible and effective solution was proposed in this study to enhance IPMC performance operating in air by doping polyethylene oxide (PEO) with superior water retention capacity into Nafion membrane. The investigation of physical characteristics of membranes blended with varying PEO contents revealed that PEO/Nafion membrane with 20 wt% PEO exhibited a homogeneous internal structure and a high water uptake ratio. At the same time, influences of PEO contents on electromechanical properties of IPMCs were studied, showing that the IPMCs with 20 wt% PEO presented the largest peak-to-peak displacement, the highest volumetric work density, and prolonged stable working time. It was demonstrated that doping PEO reinforced electromechanical performances and restrained displacement attenuation of the resultant IPMC.

摘要

目前的离子聚合物-金属复合材料（IPMC）由于漏水问题，在空气中总是存在衰减大、工作时间短的不足。为了解决这个问题，本研究提出了一种可行且有效的解决方案，即通过将具有优异保水能力的聚环氧乙烷（PEO）掺杂到Nafion膜中，来提高IPMC在空气中的性能。对不同PEO含量共混膜的物理特性研究表明，含20 wt% PEO的PEO/Nafion膜呈现出均匀的内部结构和高吸水率。同时，研究了PEO含量对IPMC机电性能的影响，结果表明含20 wt% PEO的IPMC具有最大的峰-峰位移、最高的体积功密度以及延长的稳定工作时间。结果表明，掺杂PEO增强了所得IPMC的机电性能并抑制了位移衰减。