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Spontaneous multiscale phase separation within fluorinated xerogel coatings for fouling-release surfaces
Biofouling
  • Anastasiya Sokolova, University at Buffalo
  • Joseph J. Bailey, University at Buffalo
  • Grant T. Waltz, California Polytechnic State University - San Luis Obispo
  • Lenora H. Brewer, California Polytechnic State University - San Luis Obispo
  • John A. Finlay, The University of Birmingham
  • Jill Fornalik, Eastman Kodak Company
  • Dean Wendt, California Polytechnic State University - San Luis Obispo
  • Maureen E. Callow, The University of Birmingham
  • James A. Callow, The University of Birmingham
  • Frank V. Bright, University at Buffalo
  • Michael R. Detty, University at Buffalo
Publication Date
2-1-2012
Abstract
Four-component xerogel films consisting of 1 mole-% n-octadecyltrimethoxysilane (C18) and 50 mole-% tetraethoxysilane (TEOS) in combination with 1–24 mole-% tridecafluoro-1,1,2,2-tetrahydrooctyltriethoxysilane (TDF) and 25–48 mole-% n-octyltriethoxysilane (C8) and a 1:49:50 mole-% C18/TDF/TEOS were prepared. Settlement of barnacle cyprids and removal of juvenile barnacles, settlement of zoospores of the alga Ulva linza, and strength of attachment of 7-day sporelings (young plants) of Ulva were compared amongst the xerogel formulations. Several of the xerogel formulations were comparable to poly(dimethylsiloxane) elastomer with respect to removal of juvenile barnacles and removal of sporeling biomass. The 1:4:45:50 and 1:14:35:50 C18/TDF/C8/TEOS xerogels displayed some phase segregation by atomic force microscopy (AFM) pre- and post-immersion in water. Imaging reflectance infrared microscopy showed the formation of islands of alkane-rich and perfluoroalkane-rich regions in these same xerogels both pre- and post-immersion in water. Surface energies were unchanged upon immersion in water for 48 h amongst the TDF-containing xerogel coatings. AFM measurements demonstrated that surface roughness on the 1:4:45:50 and 1:14:35:50 C18/TDF/C8/TEOS xerogel coatings decreased upon immersion in water.
Disciplines
Publisher statement
This is an electronic version of an article published in Spontaneous multiscale phase separation within fluorinated xerogel coatings for fouling-release surfaces.
Citation Information
Anastasiya Sokolova, Joseph J. Bailey, Grant T. Waltz, Lenora H. Brewer, et al.. "Spontaneous multiscale phase separation within fluorinated xerogel coatings for fouling-release surfaces" Biofouling Vol. 28 Iss. 2 (2012) p. 143 - 157
Available at: http://works.bepress.com/dwendt/27/