Influence of additives on the properties of casting nafion membranes and SO-based ionic polymer–Metal composite actuators

Authors

  • Yanjie Wang,

    1. School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, People's Republic of China
    2. State Key Laboratory for Strength and Vibration of Mechanical Structure, Xi'an Jiaotong University, Xi'an, People's Republic of China
    Search for more papers by this author
  • Hualing Chen,

    1. School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, People's Republic of China
    2. State Key Laboratory for Strength and Vibration of Mechanical Structure, Xi'an Jiaotong University, Xi'an, People's Republic of China
    Search for more papers by this author
  • Yongquan Wang,

    Corresponding author
    1. School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, People's Republic of China
    Search for more papers by this author
  • Bin Luo,

    1. School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, People's Republic of China
    Search for more papers by this author
  • Longfei Chang,

    1. School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, People's Republic of China
    Search for more papers by this author
  • Zicai Zhu,

    1. School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, People's Republic of China
    2. State Key Laboratory for Strength and Vibration of Mechanical Structure, Xi'an Jiaotong University, Xi'an, People's Republic of China
    Search for more papers by this author
  • Bo Li

    1. School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, People's Republic of China
    2. State Key Laboratory for Strength and Vibration of Mechanical Structure, Xi'an Jiaotong University, Xi'an, People's Republic of China
    Search for more papers by this author

Abstract

As a typical smart material, ionic polymer metal composite (IPMC) has a sandwich structure, which consists of a base membrane and two thin metallic electrodes on both sides of the base membrane. The properties of the base membrane, Nafion as the most used base material, strongly affect the performance of IPMC actuator. This paper reports the effects of different additives, such as ethylene glycol (EG), dimethyl sulfoxide (DMSO), N, N′-dimethyl formamide (DMF), and N-methyl formamide (NMF), on the performances of the casting membranes and SO-based IPMC actuators. Studies have shown that the microstructures of the casting membranes with EG and DMSO as additives are more loose and amorphous, leading to higher water contents and thus higher conductivity than those with DMF, NMF, and Nafion 117. Among the casting membrane-based IPMC actuators, EG-based IPMC actuator has larger deformation and blocking force, higher strain energy density and conversion efficiency at 2 V DC voltage, whose electromechanical properties are most close to that based on Nafion 117. POLYM. ENG. SCI., 54:818–830, 2014. © 2013 Society of Plastics Engineers

Ancillary