Préparation de surfaces industrielles par plasmas froids : contribution à l'étude des mécanismes élémentaires d'interaction entre une post-décharge N2-O2 et l'hexatriacontane

Abstract : The presented works deal with preparation of industrial surfaces and more particularly with surface cleaning by plasma. In order to clarify the role played by the different active species during the surface cleaning, we studied the mechanisms of interaction between Nz-Oz post-discharges and hexatriacontane. The hexatriacontane modifications have been brought to the fore by means of numerous analytical techniques (weighing, elementary chemical analysis, Fourier transformed infrared analysis, size exclusion chromatography analysis). We studied also the gas phase by optical emission spectroscopy and determined the concentrations of atomic oxygen and nitrogen by NO titration for some gas mixtures. The correlation of these experimental results with the modeling results of the post-discharge permitted to determine precisely what are the species and the reactional mechanisms which take place during the fonctionnalisation and the grafting of the polymer. Owing to the conclusions obtained during these basic studies, it was possible to apprehend more easily the three industrial problematics submitted as a part of the TIAG ministerial project. Then we have studied the surface preparation of copper samples by radio-frequency and pulsed DC plasmas, the surface preparation of samples in copper-lead alloy by pulsed DC plasmas and finally, the elimination by pulsed DC plasmas of the contaminants which can sweat from polycarbonate and polysulfone samples.
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Theses
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http://docnum.univ-lorraine.fr/prive/INPL_T_2004_HODY_V.pdf
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https://hal.univ-lorraine.fr/tel-01750034
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Submitted on : Thursday, March 29, 2018 - 12:36:19 PM
Last modification on : Monday, April 16, 2018 - 10:41:02 AM

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  • HAL Id : tel-01750034, version 1

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Virginie Hody. Préparation de surfaces industrielles par plasmas froids : contribution à l'étude des mécanismes élémentaires d'interaction entre une post-décharge N2-O2 et l'hexatriacontane. Autre [cond-mat.other]. Institut National Polytechnique de Lorraine, 2004. Français. ⟨NNT : 2004INPL105N⟩. ⟨tel-01750034⟩

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