The Control of Marine Biofouling on Xerogel Surfaces with Nanometer-Scale TopographyBiofouling: The Journal of Bioadhesion and Biofilm Research
AbstractMixtures of n-octadecyltrimethoxysilane (C18, 1-5 mole-%), n-octyltriethoxysilane (C8) and tetraethoxysilane (TEOS) gave xerogel surfaces of varying topography. The 1:49:50 C18/C8/TEOS xerogel formed 100-400-nm-wide, 2-7-nm deep pores by AFM while coatings with ≥3% C18 were free of such features. Segregation of the coating into alkane-rich and alkane-deficient regions in the 1:49:50 C18/C8/TEOS xerogel was observed by IR microscopy. Immersion in ASW for 48 h gave no statistical difference in surface energy for the 1:49:50 C18/C8/TEOS xerogel and a significant increase for the 50:50 C8/TEOS xerogel. 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 were compared amongst the xerogel formulations. Settlement of barnacle cyprids was significantly lower in comparison to glass and polystyrene standards. The 1:49:50 and 3:47:50 C18/C8/TEOS xerogels were comparable to PDMSE with respect to removal of juvenile barnacles and sporeling biomass, respectively.
Copyright2011 Taylor & Francis.
Citation InformationNikhil Gunari, Lenora H. Brewer, Stephanie M. Bennett, Anastasiya Sokolova, et al.. "The Control of Marine Biofouling on Xerogel Surfaces with Nanometer-Scale Topography" Biofouling: The Journal of Bioadhesion and Biofilm Research Vol. 27 Iss. 2 (2011) p. 137 - 149
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