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Updated: Feb 9, 2026

Preparation and Friction Force Microscopy Measurements of Immiscible, Opposing Polymer Brushes
Published on: December 24, 2014
Cononsolvency Transition of Polymer Brushes: A Combined Experimental and Theoretical Study
Huaisong Yong1,2, Sebastian Rauch3, Klaus-Jochen Eichhorn4
1Leibniz-Institut für Polymerforschung Dresden e.V., 01069 Dresden, Germany. yong@ipfdd.de.
Abstract:
In this study, the cononsolvency transition of poly(N-isopropylacrylamide) (PNiPAAm) brushes in aqueous ethanol mixtures was studied by using Vis-spectroscopic ellipsometry (SE) discussed in conjunction with the adsorption-attraction model. We proved that the cononsolvency transition of PNiPAAm brushes showed features of a volume phase transition, such as a sharp collapse, reaching a maximum decrease in thickness for a very narrow ethanol volume composition range of 15% to 17%. These observations are in agreement with the recently published preferential adsorption model of the cononsolvency effect.
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