The potential of nano-structured silicon oxide type coatings deposited by PACVD for control of aquatic biofouling
| Autor: | Michala E. Pettitt, Joanne Stallard, Aleksandra Kocijan, Qi Zhao, Laurent Akesso, Chen Liu, Fraddry D’Souza, Su Wang, Patricia Calvillo Guinaldo, James A. Callow, Črtomir Donik, Maureen E. Callow, Monika Jenko, D.G. Teer, G.T. Donnelly, Lathe A. Jones, Peter R. Willemsen |
|---|---|
| Rok vydání: | 2009 |
| Předmět: |
Spores
Materials science Silicon Surface Properties Silicon dioxide chemistry.chemical_element Aquatic Science engineering.material Pseudomonas fluorescens Applied Microbiology and Biotechnology Biofouling Ulva chemistry.chemical_compound Coating Plasma-enhanced chemical vapor deposition Ulva linza Marinobacter Botany Dimethylpolysiloxanes Silicon oxide Water Science and Technology Diatoms Spores Bacterial Bacteria biology Eukaryota Silicon Dioxide biology.organism_classification Surface energy Nanostructures Halomonadaceae Chemical engineering chemistry Biofilms engineering Glass Volatilization Water Microbiology Hydrophobic and Hydrophilic Interactions |
| Zdroj: | Biofouling. 25:55-67 |
| ISSN: | 1029-2454 0892-7014 |
| DOI: | 10.1080/08927010802444275 |
| Popis: | SiO(x)-like coatings were deposited on glass slides from a hexamethylsiloxane precursor by plasma-assisted CVD (PACVD). Surface energies (23.1-45.7 mJ m(-1)) were correlated with the degree of surface oxidation and hydrocarbon contents. Tapping mode AFM revealed a range of surface topologies with Ra values 1.55-3.16 nm and RMS roughness 1.96-4.11 nm. Settlement of spores of the green alga Ulva was significantly less, and detachment under shear significantly more on the lowest surface energy coatings. Removal of young plants (sporelings) of Ulva under shear was positively correlated with reducing the surface energy of the coatings. The most hydrophobic coatings also showed good performance against a freshwater bacterium, Pseudomonas fluorescens, significantly reducing initial attachment and biofilm formation, and reducing the adhesion strength of attached bacterial cells under shear. Taken together the results indicate potential for further investigation of these coatings for applications such as heat exchangers and optical instruments. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|