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Biofonctionnalisation de structures fibreuses en PET avec des molécules d'origine biologique

Abstract : This study aim to the functionalization of poly (ethylene terephthalate) (PET) fabric using active biomolecules. Curcumin, Nisin and Alginate, were applied to the PET fabric to give it an antibacterial activity. Various methods have been used, active molecules were applied by padding, diffusion and/or adsorption, and surface treatment techniques such as plasma and UV-Excimer. After the functionalization, physical, chemical and biological characterizations were carried out using various techniques such as: Wettability, AFM, XPS, Colorimetry, UV-visible Spectroscopy, Spectrofluorimetry ... On the other hand, the properties of durability of treatment were evaluated. This study highlights the difficulties associated with the use of biomolecules. In particular, their use is difficult because of their lack of stability as a function of external parameters: temperature, pH, UV... However, these molecules have interesting antibacterial properties. We have studied different methods of active molecules attachment on textiles: diffusion in the fiber, surface adsorption and inclusion in a hydrogel. We show that the antibacterial property of the treatment is due to the active molecules release, but also due to more complex mechanisms involving the molecules degradation products. The kinetics of release can be controlled by the parameters used for the treatment.
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Submitted on : Friday, November 13, 2020 - 3:36:52 PM
Last modification on : Monday, December 7, 2020 - 10:16:14 AM
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  • HAL Id : tel-03004272, version 1



Ahmed Kerkeni. Biofonctionnalisation de structures fibreuses en PET avec des molécules d'origine biologique. Sciences de l'ingénieur [physics]. Université de Valenciennes et du Hainaut-Cambrésis, 2010. Français. ⟨NNT : 2010VALE0015⟩. ⟨tel-03004272⟩



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