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Langmuir. 2017 Jul 11;33(27):6804-6811. doi: 10.1021/acs.langmuir.7b01199. Epub 2017 Jun 29.

Core-Shell Microgel-Based Surface Coatings with Linear Thermoresponse.

Langmuir : the ACS journal of surfaces and colloids

Marian Cors, Oliver Wrede, Anne-Caroline Genix, Dario Anselmetti, Julian Oberdisse, Thomas Hellweg

Affiliations

  1. Department of Physical and Biophysical Chemistry, Bielefeld University , Universitaetsstrasse 25, 33615 Bielefeld, Germany.
  2. Laboratoire Charles Coulomb (L2C), CNRS, Université de Montpellier , 34095 Montpellier, France.
  3. Department for Experimental Biophysics and Applied Nanoscience, Bielefeld University , Universitaetsstrasse 25, 33615 Bielefeld, Germany.

PMID: 28628746 DOI: 10.1021/acs.langmuir.7b01199

Abstract

We study the swelling and shrinking behavior of core-shell microgels adsorbed on silicon wafers. In these systems, the core is made of cross-linked poly(N-isopropylmethacrylamide) and the shell consists of cross-linked poly(N-n-propylacrylamide). In suspension, these particles exhibit an extended linear swelling behavior in the temperature interval between the lower critical solution temperatures of the two polymers. Using ellipsometry and atomic force microscopy, we show that this linear response is also observed in the adsorbed state.

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