Tunable actuation behavior of ionic polymer metal composite utilizing carboxylated carbon nanotube-doped Nafion matrix

Abstract

In this study, we propose to neutralize the relaxation deformation of Nafion-ionic polymer metal composite (IPMC) by slow anode deformation of Flemion-IPMC caused by carboxyl groups (-COOH). Carboxylated carbon nanotubes (CCNT) as -COOH carriers were doped into a Nafion matrix. By adjusting the doping content from 0 wt% to 10 wt%, an IPMC with constant steady-state deformation has been achieved at a critical CCNT content of 2 wt%. Moreover, the increasing rate of the slow anode deformation with the

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

“…Actuation performances were represented by detecting the deformation and blocking force of IPMCs with the same experimental facilities described in the Reference [ 10 ]. The test platform is shown in Supplementary Materials Figure S1 (Supporting Information) [ 5 ]. The sample was fastened by a gold-plated copper clamp on one side with a free length of 30 mm.…”

“…Tremendous efforts have been made to develop ionic polymer-metal composites (IPMCs) as soft actuators based on their inherent flexibility, light weight, and biological compatibility [ 1 , 2 , 3 , 4 ]. IPMCs, typically composed of polymer electrolyte sandwiched between noble metal electrodes, show large deformation with fast response at relatively low electrical excitation (usually less than 10 V) [ 5 , 6 ]. Because of these advantages, IPMC actuators are drawing increasing interest for applications in bionic robotics, biomedical fields, and artificial muscles [ 7 , 8 ].…”

Soft Actuator Materials for Electrically Driven Haptic Interfaces

“…[ 183 ] Along a similar line, Ru et al utilized carboxylated MWCNTs as dopants in Nafion, eliminating back‐relaxation at a low 2%wt loading ( Figure A). [ 184 ] The secondary carboxylate groups from the CNTs generate a secondary source of H + ions, which migrate toward the cathode, counteracting the back‐migration of water to the anode. [ 184 ] However, IPMCs doped with CNTs have shown compromised performances due to the aggregation of CNTs.…”

Rapid preparation of a Nafion/Ag NW composite film and its humidity sensing effect

“…This composite lm is oen called an ionic polymer metal composite (IPMC), which is considered to be one of the popular types of articial muscles. [13][14][15][16][17] Due to the special solid/liquid two-phase structures inside Naon, it has a natural affinity for moisture due to which it undergoes a large volume change when it is exposed in a humid environment, as shown in Fig. 1b.…”