Journal of Coatings Technology and Research

, Volume 13, Issue 4, pp 577–587 | Cite as

3D laser scanning confocal microscopy of siloxane-based comb and double-comb polymers in PVDF-HFP thin films

  • Eva Cznotka
  • Steffen Jeschke
  • Sebastian Schmohl
  • Patrik Johansson
  • Hans-Dieter Wiemhöfer
Article

Abstract

Currently, atomic force microscopy is the preferred technique to determine roughness on membrane surfaces. In this paper, a new method to measure surface roughness is presented using a 3D laser scanning confocal microscope for high-resolution topographic analysis and is compared to conventional SEM. For this study, the surfaces of eight samples based on a poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) host polymer with different liquid interpenetrating components were analyzed. Polymethylhydrosiloxane, triethylene glycolallylmethylether, (3,3,3-trifluoropropyl)methylcyclotrisiloxane (D3-C2H4CF3), polysiloxane-comb-propyloxymethoxytriglycol (PSx), polysiloxane-comb-propyl-3,3,3-trifluoro (PSx-C2H4CF3), poly[bis(2-(2-methoxyethoxy) ethoxy) phosphazene, or poly[bis(trifluoro)ethoxy] phosphazene was chosen as interpenetrating compound to investigate the impact of comb and double-comb-structured polymer backbones, as well as their dipolar or fluorous residues on the PVDF-HFP-miscibility. Different phases of the constituting ingredients were identified via their thermal properties determined by DSC. Additionally, the COSMO-RS method supported the experimental results, and with regard to computed σ-profiles, new modified structures for polysiloxane and polyphosphazene synthesis were suggested.

Keywords

3D laser scanning confocal microscopy Thin film Polymer electrolyte, comb and double-comb polymers 

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Copyright information

© American Coatings Association 2016

Authors and Affiliations

  • Eva Cznotka
    • 1
  • Steffen Jeschke
    • 1
    • 2
  • Sebastian Schmohl
    • 1
  • Patrik Johansson
    • 2
  • Hans-Dieter Wiemhöfer
    • 1
  1. 1.Institute for Inorganic and Analytical ChemistryUniversity of MünsterMünsterGermany
  2. 2.Department of Applied PhysicsChalmers University of TechnologyGothenburgSweden

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