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Theses

Rôle des molécules phénoliques dans la photopolymérisation : application à des résines de finition pour le bois

Abstract : The use of environnement kind finishes such as photocurable resins onto wood is difficult because of the material reactivity. We studied the influence of phenols chosen as model wood extractives onto the photopolymerization of acrylates. Kinetics of radical curing were investigated by differential scanning (photo)calorimetry to compare phenols reactivity following the nature of initiation (thermal or photochemical) and the action of photoinitiators used. Our results are in good agreement with the interaction mechanisms between phenols/transient species arising from investigations by transient absorption and electron spin resonance spectroscopies. Mechanical properties of acrylate films were characterized by thermomechanical analysis and some structural defects of the cured networks were highlighted depending upon the photoinitiator used. Further developments of this study concern the characterization of coloured phenolic compounds and the use of initiators efficient in visible light.
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Theses
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http://docnum.univ-lorraine.fr/prive/SCD_T_2001_0172_SYLLA.pdf
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Submitted on : Thursday, March 29, 2018 - 10:40:33 AM
Last modification on : Tuesday, December 15, 2020 - 12:31:10 PM

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  • HAL Id : tel-01746575, version 1

Citation

Moustapha Sylla. Rôle des molécules phénoliques dans la photopolymérisation : application à des résines de finition pour le bois. Autre. Université Henri Poincaré - Nancy 1, 2001. Français. ⟨NNT : 2001NAN10172⟩. ⟨tel-01746575⟩

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