Electrochemical behavior of a new type of perfluorinated carboxylate membrane/platinum composite

• Published in: Journal of applied polymer science Vol. 99; no. 5; pp. 2687 - 2693
• Main Authors: Jeong, Ho Young, Kim, Byung Kyu
• Format: Journal Article
• Language: English
• Published: Hoboken Wiley Subscription Services, Inc., A Wiley Company 05.03.2006; Wiley
• Subjects: Applied sciences; Composites; counter cation; Exact sciences and technology; Forms of application and semi-finished materials; metal-polymer complexes; perfluorinated carboxylate membrane; Polymer industry, paints, wood; sensor; swell ratio; Technology of polymers; Ionomer; metal-polymer complexes; swell ratio; Alkyl acrylate copolymer; Fluorine containing copolymer; Swelling; Experimental study; counter cation; Composite material; Electrodes; perfluorinated carboxylate membrane; Medium effect; Platinum; Morphology; Cation exchange membrane; Bending; Counter ion; sensor; Acid copolymer; Aqueous solution; Electric field effect; Actuator
• ISSN: 0021-8995; 1097-4628
• DOI: 10.1002/app.22814

A new type of ionomeric polymer–metal composite (IPMC) based on various compositions of perfluoroalkylacrylate‐acryl acid copolymer with different types of counter cation has been synthesized by a radical copolymerization of fluoroalkylacrylate (FA) and acrylic acid (AA). Swelling behavior of the membranes was studied in deionized water as well as in aqueous single salt solutions (LiCl and NaCl). Swell of membrane increased with the increase in ionic content of the copolymer. Swell in deionized water was much higher than in aqueous single salt solution. To examine its performance as a new electroactive polymer, actuation force and displacement responses to DC and step voltage across the IPMC were measured. Results indicated that membranes prepared from 75/25 (FA/AA) (FA25) gave an adequate flexibility and proper hydrated state, allowing easy deflection toward the applied voltage. Surface morphology measurements (atomic force microscopy and scanning electron microscopy) showed that platinum particles are predominantly located at the surfaces. © 2005 Wiley Periodicals, Inc. J Appl Polym Sci, 2006