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Coatings 2016, 6(4), 45; doi:10.3390/coatings6040045

Assessing the Protective Quality of Wax Coatings on Bronze Sculptures Using Hydrogel Patches in Impedance Measurements

Department of Chemistry, Portland State University, Portland, OR 97207, USA
Author to whom correspondence should be addressed.
Academic Editor: Massimo Innocenti
Received: 26 July 2016 / Revised: 28 September 2016 / Accepted: 9 October 2016 / Published: 13 October 2016
(This article belongs to the Special Issue Advances in Coatings Characterization)
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In this work, we used chemically cross-linked acrylamide-based hydrogel patches that have been specifically developed for use as solid electrolytes in Electrochemical Impedance Spectroscopy to measure the impedance of two waxed bronze sculptures at the Seattle Art Museum’s (SAM) Olympic Sculpture Park (OSP) and compare those results to laboratory test panels. We determined that the impedance response in the frequency range in which measurements may be taken (10 kHz to 1 MHz) is mostly capacitive and that a freshly applied wax coating should ideally be less than 1 nF·cm−2 for optimal protective performance. View Full-Text
Keywords: sculpture; wax; EIS; impedance; bronze; hydrogel; sensor; coating sculpture; wax; EIS; impedance; bronze; hydrogel; sensor; coating

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

England, A.H.; Hosbein, K.N.; Price, C.A.; Wylder, M.K.; Miller, K.S.; Clare, T.L. Assessing the Protective Quality of Wax Coatings on Bronze Sculptures Using Hydrogel Patches in Impedance Measurements. Coatings 2016, 6, 45.

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