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Fonctionnalisation de surfaces d'acier inoxydable par des enzymes en vue d'inhiber l'adhésion de bactéries et la formation de biofilms en eau de mer ArchiMer
Caro, A.; Humblot, V.; Minier, M.; Salmain, M.; Compère, Chantal; Pradier, C.-m..
All surfaces that are immersed in seawater rapidly become covered by nitrogenous compounds, proteins, carbohydrates, salts, silica and bacteria in a few hours, and by a grown biofilm in a few days. These biodeterioration, physical and chemical damages involve important cleaning costs. Organostanic paintings used up to now to protect the surfaces against this spoiling will be prohibited in 2008 because of their toxicity. That's why the stake today is to find alternatives to these paintings. The solution which is here suggested consists in acting on the first stages of the formation of the biofilm i.e. the proteins and bacterial adsorption on the surface. For this, the surface is chemically modified then functionalized by enzymes. Enzymes will act locally on...
Tipo: Text Palavras-chave: Acier inoxydable; Fonctionnalisation; Enzymes; Adsorption bactérienne; PM-IRRAS; XPS; Stainless steel; Functionalization; Enzymes; Bacterial adsorption; IR; XPS.
Ano: 2006 URL: https://archimer.ifremer.fr/doc/00479/59095/61733.pdf
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Towards in situ detection of PAH trace in sea-water using SERS-active sensors ArchiMer
Peron, Olivier; Rinnert, Emmanuel; Lehaitre, Michel; Colas, Florent; Compere, Chantal.
This paper reports the development of a sensor based on surface-enhanced Raman scattering (SERS) for analyses in sea-water. Polycyclic aromatic hydrocarbons (PAHs) are targeted by these sensors and their detection in situ summons up chemical synthesis and optical development. Firstly, a relevant synthesis of SERS active substrates based on gold nanostructures is presented. Different kinds of substrates have been synthesized under variable experimental conditions to modify some parameters such as i) gold shape, size and distribution and such as ii) chemical functionalization: (i) gold nanoparticles were prepared either by chemical reduction of HAuCl4 or by physical deposition. (ii) Substrates were functionalized by hydrophobic films to allow nonpolar...
Tipo: Text Palavras-chave: Functionalization; Silanization; Gold nanostructures; SERS; PAH detection; Sea-water; Sensor; In situ.
Ano: 2009 URL: http://archimer.ifremer.fr/doc/00012/12363/9152.pdf
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