Article
A Cost-Effective Fabrication Method for Ionic Polymer-Metal Composites
2005
  • Jonathan Stolk , Franklin W. Olin College of Engineering
  • Michael Siripong , Franklin W. Olin College of Engineering
  • Susan Fredholm , Franklin W. Olin College of Engineering
  • Que Anh Nguyen , Franklin W. Olin College of Engineering
  • Brian Shih , Franklin W. Olin College of Engineering
  • Johannah Itescu , Franklin W. Olin College of Engineering
Document Type
Article
Publication Date
10-1-2005
Abstract

To date, many processes have been used for the preparation of ionic polymer-metal composite (IPMC) artificial muscle membranes from conductive metals and perfluorosulfonic polymers such as Nafion. The most widely used of these methods is the platinum plating process, which involves chemical reduction of ionic salt solutions. Although these chemical electroding techniques produce IPMCs with outstanding surface electrodes and excellent performance characteristics, they are relatively costly and time-consuming. In this paper, we describe a novel fabrication process for fast preparation of low-cost Ni-Au-Nafion IPMCs. The process involves the formation of an adherent surface layer on prepared Nafion through DC sputter deposition of a fine-grained gold film, followed by electroplating of a thin and ductile nickel layer in a solution of aqueous nickel salts and boric acid. Preliminary results indicate that the Nafion-117-based IPMCs produced using this technique exhibit good surface conductivity and promising actuation performance, with 20 mg, 11.5 mm × 4.7 mm cantilever bending samples showing high displacements and tip forces up to 4 grams at 4 V. Our current research efforts are focused on achieving repeatable synthesis techniques and evaluating the properties and performance characteristics of the Au-Ni-Nafion IPMCs, especially in comparison to the popular platinum IPMCs.

Comments

© 2006 Materials Research Society. This article was published in MRS Proceedings, no. 889 : 0889-W04-03 and may be found here.

Citation Information
Jonathan Stolk, Michael Siripong, Susan Fredholm, Que Anh Nguyen, et al.. "A Cost-Effective Fabrication Method for Ionic Polymer-Metal Composites" (2005)
Available at: http://works.bepress.com/jonathan_stolk/20/