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Swelling and Collapse of an Adsorbed pH-Responsive Film-Forming Microgel Measured by Optical Reflectometry and QCM

Howard, Shaun; Craig, Vincent; Fitzgerald, Paul A; Wanless, Erica J


The swelling and deswelling of a pH-responsive electrosterically stabilized poly[2-(diethylamino)ethyl methacrylate] microgel adsorbed to silica surfaces have been quantified using the techniques of optical reflectometry (OR) and quartz crystal microbalance (QCM). It is shown that by utilizing and comparing OR measurements performed on wafers with differing oxide layer thicknesses the adsorbed amount and film thickness of the adsorbed microgel in both the swollen and deswollen forms can be...[Show more]

CollectionsANU Research Publications
Date published: 2010
Type: Journal article
Source: Langmuir
DOI: 10.1021/la1023218


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