Photoinitiating Systems Based on Anthraquinone Derivatives: Synthesis of Antifouling and Biocide Coatings
| Autor: | Somia Tomane, Valérie Langlois, Pierre-Emmanuel Mazeran, Jacques Lalevée, Pauline Sautrot-Ba, Bernadette Graff, Samir Abbad-Andaloussi, Fabrice Morlet-Savary, Davy-Louis Versace |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Biocide
Cationic polymerization 02 engineering and technology General Chemistry Epoxy 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Biofouling chemistry.chemical_compound Hydrolysis Monomer Photopolymer chemistry Benzyl alcohol visual_art Polymer chemistry visual_art.visual_art_medium 0210 nano-technology |
| Zdroj: | ChemPlusChem. 82:1298-1307 |
| ISSN: | 2192-6506 |
| DOI: | 10.1002/cplu.201700365 |
| Popis: | Performing photoinitiating systems combining 2, 6-Diaminoanthraquinone (AQD), iodonium salt (Iod) and benzyl alcohol derivatives have been developed to efficiently initiate the cationic polymerization of epoxy monomer upon light exposure. Electron Spin Resonance spin-trapping (ESR ST) experiments, fluorescence investigations and steady state photolysis have demonstrated that a dye-sensitized reaction occurs between AQD and the benzyl alcohol derivatives via a H-abstraction mechanism upon light illumination, followed by a reduction of Iod. The in situ liberation of protic acids promotes the cationic photopolymerization of epoxy monomers concomitantly with hydrolysis and condensation of the reactive methoxysilanes of an organic-inorganic precursor e.g. 3-Glycidyloxypropyltrimethoxysilane (GPTMS). Nanoindentation experiments and scratch resistance tests proved that the resulting GPTMS coatings exhibit very good resistance to brittle fracture and excellent adherence to the stainless steel substrates. Interestingly, the antibacterial tests on the GPTMS coatings have highlithed efficient antifouling and biocide properties against E. coli and S. aureus. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Plný text