Depth profiling of latex blends of fluorinated and fluorine-free acrylates with laser-induced secondary mass spectrometry

Authors

  • Stefanie M. Walz,

    Corresponding author
    1. Freiburger Materialforschungszentrum (FMF) and Department of Molecular and Optical Physics, Albert Ludwigs Universitaet Freiburg, Herman Herder Str. 4, Freiburg 79104, Germany
    • Freiburger Materialforschungszentrum (FMF) and Department of Molecular and Optical Physics, Albert Ludwigs Universitaet Freiburg, Herman Herder Str. 4, Freiburg 79104, Germany
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  • Thomas E. Malner,

    1. Institut für Makromolekulare Chemie, Albert Ludwigs Universitaet Freiburg, Herman Herder Str. 4, Freiburg 79104, Germany
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  • Ulrich Mueller,

    1. Carl Zeiss SMT AG, Carl-Zeiss Str. 22, Oberkochen 73447, Germany
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  • Rolf Muelhaupt

    1. Institut für Makromolekulare Chemie, Albert Ludwigs Universitaet Freiburg, Herman Herder Str. 4, Freiburg 79104, Germany
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Abstract

We explored phase separation and self-assembly of perfluoroalkyl segments at the surface of polymer films obtained from latices of semifluorinated acrylate copolymers and the corresponding latex blends of nonfluorinated and semifluorinated polyacrylates. With laser-induced secondary mass spectrometry the fluorine distribution was measured after annealing above the minimum film-forming temperature of the polymers up to a depth of several micrometers. Depth profiles of a semifluorinated acrylate homopolymer and latex blends thereof with fluorine-free alkylacrylates with 25, 50, and 75 mol % semifluorinated acrylate as well as a copolymer comprised of alkyl acrylate and semifluorinated acrylate (50/50 mol %) were investigated. In the case of latex blends containing both semifluorinated polyacrylates and fluorine-free or low-fluorine polymers, self-assembly accounted for enrichment of the perfluoroalkyl segments at the surface. Coatings exhibiting low surface energy and having a substantially reduced total fluorine content were obtained. © 2003 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 41: 360–367, 2003

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