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Polyvinylidene fluoride grafted poly(styrene sulfonic acid) as ionic polymer-metal composite actuator

Mehraeen, Shayan and Sadeghi, Sahl and Cebeci, Fevzi Çakmak and Papila, Melih and Alkan Gürsel, Selmiye (2018) Polyvinylidene fluoride grafted poly(styrene sulfonic acid) as ionic polymer-metal composite actuator. Sensors and Actuators A: Physical, 279 . pp. 157-167. ISSN 0924-4247

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Official URL: http://dx.doi.org/10.1016/j.sna.2018.05.038

Abstract

A high performance ionic polymer-metal composite actuator (IPMC) based on proton conductivity of poly(styrene sulfonic acid) was fabricated using a simple and novel method. Poly(styrene sulfonic acid) (PSSA) as a well-known hydrophilic proton conductive functional group was radiation grafted on polyvinylidene fluoride (PVDF) at different graft levels. The material system is well known for the pro-ton exchange membranes of fuel cells, however, its IPMC application is novel. Flexible, soft and porous membranes were prepared by simple solution casting technique. Physical, mechanical, thermal and actu-ation properties of prepared membranes were characterized and compared with Nafion® . The membrane with highest graft level showed comparable ion exchange capacity and proton conductivity with that of Nafion whereas its water uptake is near three-fold greater than Nafion. To make PVDF-g-PSSA based IPMC actuators, Pt particles were deposited on both sides of the membranes using electroless plating method. Actuation performance of the IPMC actuators under various AC potentials and different frequencies were investigated in air. The results revealed that the PVDF-g-PSSA membrane with highest graft level showed highest average bending strain at 0.1 Hz and 4 V. The enhanced bending actuation behavior was attributed to porous morphology and large water uptake of graft polymerized actuators. Compared with traditional Nafion-based IPMC, our bending actuator is cheaper, and its preparation is fast and simple. So, it can be a viable replacement candidate for the traditional Nafion in soft actuator systems.

Item Type:Article
Uncontrolled Keywords:Poly(vinylidene fluoride); Poly(styrene sulfonic acid); PVDF-g-PSSA; Bending actuator; IPMC; Radiation induced graft polymerization
Subjects:Q Science > Q Science (General)
T Technology > TP Chemical technology
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Q Science > QD Chemistry
T Technology > TA Engineering (General). Civil engineering (General)
ID Code:34919
Deposited By:Selmiye Alkan Gürsel
Deposited On:17 Jul 2018 15:42
Last Modified:17 Jul 2018 15:42

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