CP actuator based on chemically deposited polypyrrole and PU based solid polymer electrolyte working in air

Hwa Jeong Choi; Hyun-Ok Lim; Ildoo Chung; Kwang-Sun Ryu; Nam-Ju Jo

doi:10.1117/12.779308

1 November 2007 CP actuator based on chemically deposited polypyrrole and PU based solid polymer electrolyte working in air

Hwa Jeong Choi, Hyun-Ok Lim, Ildoo Chung, Kwang-Sun Ryu, Nam-Ju Jo

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Proceedings Volume 6423, International Conference on Smart Materials and Nanotechnology in Engineering; 64230L (2007) https://doi.org/10.1117/12.779308
Event: International Conference on Smart Materials and Nanotechnology in Engineering, 2007, Harbin, China

Abstract

Conducting polymers (CPs), such as polypyrrole, polythiophene and polyaniline, are unique in that they have switchable properties due to their two or more mechanically stable oxidation state. Thus, their films or coatings can be easily switched by the application of small voltage and current to change volume during their electrochemical redox process. In particular, polypyrrole (PPy) has been studied most extensively because of its high electrical conductivity and good environmental stability under ambient condition. In this work, we have studied a new CP actuator, fully polymeric, assembled with two PPy film electrodes and a solid polymer electrolyte (SPE), polyurethane/Mg(ClO₄)₂. Polyurethanes (PUs) were synthesized from 4,4'-diphenylmethane diisocyanate (MDI), 1,4-butanediol (1,4-BD) and three types of polyols, poly(ethylene glycol) (PEG), poly(propylene glycol) (PPG), and PPG-block-PEG-block-PPG (PPG-co-PEG). The chemical polymerization of PPy by immersion in Py monomer aqueous solution and oxidant aqueous solution is an adequate method to prepare PU/PPy composite film as actuator. To find the proper thickness of PPy coating layer for actuation, we measured the displacement of actuators according to the thickness of PPy coating layer. And, the displacement of all actuators was discussed in connection with the properties of SPE and PPy. All the results obtained in this work show the feasibility of electrochemomechanical devices based on PPy and SPE film able to work in air.

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Hwa Jeong Choi, Hyun-Ok Lim, Ildoo Chung, Kwang-Sun Ryu, and Nam-Ju Jo "CP actuator based on chemically deposited polypyrrole and PU based solid polymer electrolyte working in air", Proc. SPIE 6423, International Conference on Smart Materials and Nanotechnology in Engineering, 64230L (1 November 2007); https://doi.org/10.1117/12.779308

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KEYWORDS

Actuators

Polymers

Surface plasmons

Polymeric actuators

Polymerization

Solids

FT-IR spectroscopy

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