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Textiles de protection fonctionnalisés auto-décontaminants vis-à-vis d'agents chimiques associant des propriétés photocatalytiques et d'adsorption/filtration

Abstract : This project is focused on the elaboration of protective suits against Chemical Warfare Agents. Indeed, the suits currently used mainly act as physical barriers, without any degradation of the toxic molecules, thus increasing cross-contamination risks.The original idea is to functionalise textile fibers with a multifunctional, multicomponent and transparent smart layer, combining active components (TiO2, for photo-oxidation of toxic agents under irradiation at room temperature) to passive components (carbon nanostructures, in order to temporary stock the reaction products or the contaminant in case of lack of irradiation or of high contamination level). The study begins on model surfaces, in order to optimise Layer-by-Layer (LbL) association of TiO2 with polymer, graphene, activated carbon, or nanodiamonds. The photocatalytic efficiency of the layer was evaluated towards the degradation of a gaseous mustard gas simulant. The best functionalisations were then transferred to textile and their photocatalytic efficiency were evaluated towards the degradation of a liquid simulant of Sarin gaz. Some detailed results were obtained in order to understand the impact of the different components and of the thickness of the films on the activity. Textiles reinforcement against abrasion and washing were also studied, as well as their regeneration after photocatalytic tests.
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Submitted on : Tuesday, December 4, 2018 - 10:44:57 AM
Last modification on : Monday, December 10, 2018 - 4:11:00 PM

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  • HAL Id : tel-01943784, version 1

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Pauline Barrois. Textiles de protection fonctionnalisés auto-décontaminants vis-à-vis d'agents chimiques associant des propriétés photocatalytiques et d'adsorption/filtration. Chimie théorique et/ou physique. Université de Strasbourg, 2018. Français. ⟨NNT : 2018STRAF006⟩. ⟨tel-01943784⟩

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