Valorization of glycerol-based divinylglycol towards the synthesis of original polymers - PhDData

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Valorization of glycerol-based divinylglycol towards the synthesis of original polymers

The thesis was published by Bonnot, Léa, in December 2017, UniversitĂ© de Bordeaux.

Abstract:

In the context of the development of bio-refineries, glycerol and its derivatives areco-products of oleochemistry for which new valorization routes must be found. This thesisdeals with the polymerizability study of a glycerol derivative, divinylglycol (DVG), asymmetrical C-6 monomer which bears a vicinal diol and two vinyl functions. In this work, thereactivity of the hydroxyl and vinyl functions of DVG in polycondensation and polyadditionreactions was studied. In a first step, the synthesis of polyesters and polyurethanes wascarried out by reaction of DVG with biosourced diesters and diisocyanates, respectively. Thevinyl functions of DVG were then used to synthesize original polymers by ADMETpolymerization and thiol-ene addition. Finally, three-dimensional epoxy-amine networkswere prepared by polymerization between a series of diamines and the bis-epoxidized DVG,previously obtained by oxidation of the double bonds. These different methods ofpolymerization showed that DVG double bonds were more reactive than the alcohol functionsand that a panel of original polymers could be obtained from this bio-sourced synthon.

Dans le contexte du dĂ©veloppement des bio-raffineries, le glycĂ©rol et ses dĂ©rivĂ©ssont des co-produits de l’olĂ©ochimie pour lesquels de nouvelles voies de valorisation doiventĂȘtre trouvĂ©es. Cette thĂšse porte sur l’étude de la polymĂ©risabilitĂ© d’un dĂ©rivĂ© du glycĂ©rol, ledivinylglycol (DVG), monomĂšre symĂ©trique Ă  6 carbones qui possĂšde un diol vicinal et deuxfonctions vinyliques. Dans ces travaux, la rĂ©activitĂ© des fonctions hydroxyle et vinyliques duDVG dans des rĂ©actions de polycondensation et polyaddition a Ă©tĂ© investiguĂ©e. Dans unpremier temps, la synthĂšse de polyesters et de polyurĂ©thanes a Ă©tĂ© rĂ©alisĂ©e par rĂ©action duDVG avec des diesters biosourcĂ©s et des diisocyanates, respectivement. Les fonctionsvinyliques du DVG ont ensuite Ă©tĂ© mises Ă  profit pour synthĂ©tiser des polymĂšres originaux parpolymĂ©risation par ADMET et addition thiol-Ăšne. Enfin, des rĂ©seaux tridimensionnels Ă©poxyamineont Ă©tĂ© prĂ©parĂ©s par polymĂ©risation entre une sĂ©rie de diamines et le DVG bis-Ă©poxydĂ©,prĂ©alablement obtenu par oxydation des doubles liaisons. Ces diffĂ©rentes mĂ©thodes depolymĂ©risation ont montrĂ© que les doubles liaisons du DVG Ă©taient plus rĂ©actives que lesfonctions alcool et qu’un panel de polymĂšres originaux pouvait ĂȘtre obtenu Ă  partir de cesynthon bio-sourcĂ©.



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