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Contrôle des propriétés mécaniques par polymérisation plasma pour des surfaces innovantes antibactériennes

Abstract : Control of biofilm formation is a major economic challenge for a large number of economic sectors such as the distribution of drinking water. Many strategies have been explored to fight against their development. This work proposes to explore the possibility of preventing bacterial adhesion by playing with mechanical surface properties. To do this, low pressure plasma polymerization of two precursors: 2- (dimethylamino) ethyl methacrylate (DMAEMA) and hydroxyethyl methacrylate (HEMA) has been explored. The results of surface characterizations (AFM, IR, XPS, wettability and AFM nanoindentation) of these thin films showed the possibility to obtain different mechanical properties in wide range (kPa to MPa) with similar chemical surface properties. Bacterial anti-adhesion properties of these films were evaluated using an Escherichia coli SCC1 strain during static and dynamic cultures. These results showed that mechanical surface properties around 600 kPa induced very good bacterial anti-adhesion properties and also revealed mobility of bacteria on the surface. Under flow, these properties were highlighted with almost no bacterial detected after two hours. In order to prolongate the life time of these properties, multilayer system has been proposed and synthesis of these plasma polymer multilayer has been studied at atmospheric pressure for industrial scale up.
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https://tel.archives-ouvertes.fr/tel-01743878
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Submitted on : Monday, March 26, 2018 - 5:30:09 PM
Last modification on : Tuesday, May 21, 2019 - 4:57:01 PM
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  • HAL Id : tel-01743878, version 1

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Mathieu Veuillet. Contrôle des propriétés mécaniques par polymérisation plasma pour des surfaces innovantes antibactériennes. Autre. Université de Haute Alsace - Mulhouse, 2017. Français. ⟨NNT : 2017MULH9533⟩. ⟨tel-01743878⟩

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