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Electro-active polymer actuators employing sulfonated poly(styrene-ran-ethylene) as ionic membranes
Wang, Xuan-Lun,Oh, Il-Kwon,Cheng, Tai-Hong John Wiley Sons, Ltd. 2010 Polymer international Vol.59 No.3
<P>We first investigated sulfonated poly(styrene-ran-ethylene) (SPSE) as a novel ionic membrane for electro-active polymer actuators. SPSE is a newly developed hydrocarbon ionomer synthesized through a post-sulfonation procedure. The thermal, electrical, morphological and mechanical properties, as well as ion-exchange capacity, proton conductivity and water uptake were investigated and compared to a Nafion<SUP>®</SUP> counterpart. Tensile tests revealed that the SPSE membrane has good mechanical stiffness and strength while immersed in water. SPSE copolymers have good thermal stability and are easily processed for the production of membranes. In this study, SPSE actuators were fabricated according to traditional ionomeric polymer–metal composite preparation procedures and tailored to moderate dimensions. The bending responses of the SPSE actuators under both AC and DC electric excitations were investigated. The voltage–current behaviors of the actuators under AC excitation were also measured. The results showed that the SPSE actuators have good electromechanical performance with regard to tip displacement. Copyright © 2010 Society of Chemical Industry</P> <B>Graphic Abstract</B> <P>We investigated sulfonated poly(styrene-ran-ethylene) (SPSE) as a novel ionic membrane for electro-active polymer actuators. SPSE is a newly developed hydrocarbon ionomer synthesized through a post-sulfonation procedure. <img src='wiley_img_2010/09598103-2010-59-3-PI2775-gra001.gif' alt='wiley_img_2010/09598103-2010-59-3-PI2775-gra001'> </P>
Wang, Xuan-Lun,Oh, Il-Kwon American Scientific Publishers 2010 Journal of Nanoscience and Nanotechnology Vol.10 No.5
<P>Ionic polymer-metal composite (IPMC) actuators employing sulfonated poly(styrene-b-ethylene-co-butylene-b-styrene) (SSEBS) ionomer and fullerene-C60 composite membrane were developed. Due to the poor electroactive performance of IPMC actuators employing pure SSEBS, fullerenes as the reinforcement agent are incorporated. The bending responses under both direct current (DC) and alternating current (AC) excitations were investigated. Compared with the actuator based on pure SSEBS, the tip displacement of IPMC actuator based on Fullerene-SSEBS composites has great improvement under DC excitations, and also the responses are quick and harmonic under AC excitations. More meaningful improvement is that Fullerene-SSEBS based IPMC actuators don't have back relaxation towards the cathode under DC activation for a long time. SEM study was carried out on the samples of Fullerene-SSEBS actuators. Platinum layers were finely synthesized on the interfaces of Fullerene-SSEBS actuators. Present results show that the fullerene, C60, can be successfully applied to reinforce the electro-mechanical properties of the ionic polymer metal composite actuators.</P>