title: Tunable Hydrophilic or Amphiphilic Coatings: A "Reactive Layer Stack" Approach.
abstract: Thin films with tunable properties are very interesting for potential applications as functional coatings with, for example, anti-icing or improved easy-to-clean properties. A novel "reactive layer stack" approach was developed to create covalently grafted mono- and multilayers of poly(glycidyl methacrylate)/poly(tert-butyl acrylate) diblock copolymers. Because these copolymers contain poly(glycidyl methacrylate) blocks they behave as self-cross-linking materials after creation of acrylic acid functionalities by splitting off the tert-butyl units. The ellipsometrically determined coating thickness of the resulting hydrophilic multilayers depended linearly on the number of applied layers. Amphiphilic films with tunable wettability were prepared using triblock terpolymers with an additional poly(methyl methacrylate) block. The mechanism of the formation of the (multi)layers was investigated in detail by studying the acidolysis of the surface-linked tert-butyl acrylate blocks by infrared reflection absorbance spectroscopy, accompanied by surface analysis using atomic force microscopy and contact angle measurements. In the case of the amphiphilic and switchable terpolymer layers this reaction was very sensitive to the used acidic reagent.
authors.affiliation: Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Strasse 6, D-01069 Dresden, Germany.
authors.forename: Ralf
authors.initials: R
authors.lastname: Frenzel
authors.affiliation: Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Strasse 6, D-01069 Dresden, Germany.
authors.forename: Susanne
authors.initials: S
authors.lastname: Höhne
authors.affiliation: Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Strasse 6, D-01069 Dresden, Germany.
authors.forename: Christian
authors.initials: C
authors.lastname: Hanzelmann
authors.affiliation: Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Strasse 6, D-01069 Dresden, Germany.
authors.forename: Thomas
authors.initials: T
authors.lastname: Schmidt
authors.affiliation: Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Strasse 6, D-01069 Dresden, Germany.
authors.forename: René
authors.initials: R
authors.lastname: Winkler
authors.affiliation: Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Strasse 6, D-01069 Dresden, Germany.
authors.forename: Astrid
authors.initials: A
authors.lastname: Drechsler
authors.affiliation: Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Strasse 6, D-01069 Dresden, Germany.
authors.forename: Eva
authors.initials: E
authors.lastname: Bittrich
authors.affiliation: Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Strasse 6, D-01069 Dresden, Germany.
authors.forename: Klaus-Jochen
authors.initials: KJ
authors.lastname: Eichhorn
authors.affiliation: Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Strasse 6, D-01069 Dresden, Germany.
authors.forename: Petra
authors.initials: P
authors.lastname: Uhlmann
keywords: IRRAS; anchor block; glycidyl methacrylate; multilayers; self-cross-linking polymer layers; triblock terpolymers