Authors Yong, H. ; Rauch, S. ; Eichhorn, K.-J. ; Uhlmann, P. ; Fery, A. ; Sommer, J.-U.
Title Consonsolvency transition of polymer brushes: A combined experimental and theoretical study
Date 11.06.2018
Number 55282
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.
Publisher Materials (Open Access)
Citation Materials (Open Access) 11 (2018) ID991
Tags cononsolvency preferential adsorption polymer brushes pnipaam ellipsometry

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