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Synthèse, structure et propriétés de polycyanurates réticulés et de matériaux nanoporeux générés en utilisant des liquides ioniques

Abstract : This PhD thesis addresses new designs of cyanate ester resin (CER) films in the presence of ionic liquids as multifunctional agents: catalysts, reactive modifiers, fillers or porogens. It should be emphasized that ionic liquids (ILs) of varying structures and concentrations significantly accelerate the polycyclotrimerization of dicyanate ester of bisphenol E, in the absence of any additional organic solvent or additive. The resulting polycyanurate networks doped with aprotic ionic liquids can be promising materials for producing photosensitive structures. Such nanocomposite systems allow for easier separation, recovery, and recycling of ILs by mere extraction, which eventually affords thermally stable nanoporous films. The porosity features of these materials depend on the concentration of ILs in the CER precursors.Protic ILs containing functional >NH and -OH groups, regardless of molar mass, chemical structure of cation and anion, chemically incorporate into the polycyanurate network, thus the resulting hybrid materials with fragments of ionic liquids could provide excellent candidates for future research in ionomers and nanocomposites.
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Submitted on : Thursday, October 31, 2019 - 5:53:11 PM
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Alina Vashchuk. Synthèse, structure et propriétés de polycyanurates réticulés et de matériaux nanoporeux générés en utilisant des liquides ioniques. Autre [cond-mat.other]. Université Paris-Est; Institut de la Chimie Macromoléculaire de Kiev (Ukraine), 2019. Français. ⟨NNT : 2019PESC0046⟩. ⟨tel-02342195⟩

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