An ionic polymer-metal composite actuator based on PSMI-incorporated PVDF with chemical stability and performance durability

Jun Lu; Sang-Gyun Kim; Sunwoo Lee; Il-Kwon Oh

doi:10.1117/12.838279

20 October 2009 An ionic polymer-metal composite actuator based on PSMI-incorporated PVDF with chemical stability and performance durability

Jun Lu, Sang-Gyun Kim, Sunwoo Lee, Il-Kwon Oh

Author Affiliations +

Proceedings Volume 7493, Second International Conference on Smart Materials and Nanotechnology in Engineering; 74934W (2009) https://doi.org/10.1117/12.838279
Event: Second International Conference on Smart Materials and Nanotechnology in Engineering, 2009, Weihai, China

Abstract

To develop artificial muscles with improved performance, a novel ionic polymer-metal composite (IPMC) actuator was developed by employing the newly-synthesized ionic networking film of poly (styrene-alt-maleimide) (PSMI)- incorporated poly (vinylidene fluoride) (PVDF). Scanning electron microscope and transmission electron microscopy revealed that much smaller and more uniform nano-sized platinum particles were formed on the surfaces of the film as well as within its polymer matrix after the electroless-plating process. Fourier transform infrared results suggested that no hydrolysis occurred for the as-prepared film actuator before and after the exposure to the elevated PH solutions at 25°C for 48h. The new actuator showed much larger tip displacement than that of a Nafion-based counterpart under the applied electrical stimulus, and overcame the back relaxation of the traditional IPMC actuator under the constant voltage. The current actuator was operated over 6.5h at high-frequency sinusoidal excitation, and its tip displacement was still comparable to that of the referenced Nafion actuator when the test was terminated. The excellent electromechanical performance is due to the inherent large ionic-exchange capacity and the unique hydrophilic nano-channels of the ionic networking film. Furthermore, the working principle of the developed IPMC actuator is thought to be based on a combination of piezoelectricity and ionic transport. The film of PSMI-incorporated PVDF has some advantages over the most widely-used Nafion-based one by diversifying niche applications in biomimetic motion, and the present study is believed to open a new avenue for the design and fabrication of the electro-active polymer film with unique functional properties.

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Jun Lu, Sang-Gyun Kim, Sunwoo Lee, and Il-Kwon Oh "An ionic polymer-metal composite actuator based on PSMI-incorporated PVDF with chemical stability and performance durability", Proc. SPIE 7493, Second International Conference on Smart Materials and Nanotechnology in Engineering, 74934W (20 October 2009); https://doi.org/10.1117/12.838279

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KEYWORDS

Actuators

Ferroelectric polymers

Polymers

Platinum

Polymeric actuators

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