Le travail réalisé porte sur la caractérisation et la valorisation de la Biolignine™ de paille de... more Le travail réalisé porte sur la caractérisation et la valorisation de la Biolignine™ de paille de blé extraite à l'échelle semi-industrielle par le procédé CIMV. La première partie est consacrée à l'étude structurale du produit et à la quantification de ses diverses fonctions hydroxyles et acides carboxyliques. Dans la seconde partie, la Biolignine™ a été utilisée, en tant que substituant du bisphénol-A, dans la synthèse de résine époxy. Les études de DSC et DLTMA ont démontré qu'après post-réticulation, les résines époxy Biolignine™-PEGDGE possèdent des caractéristiques thermomécaniques comparables à celles d'une résine époxy à base de bisphénol-A. Les résultats obtenus permettent désormais d'envisager la synthèse de résines époxy à base de Biolignine™ à plus grande échelle.This thesis relates the structural characterization and the application of wheat straw BiolignineTM extracted at semi-industrial scale by the CIMV process. The first part is the structural st...
This review is devoted to the application of MS using soft ionization methods with a special emph... more This review is devoted to the application of MS using soft ionization methods with a special emphasis on electrospray ionization, atmospheric pressure photoionization and matrix-assisted laser desorption/ionization MS and tandem MS (MS/MS) for the elucidation of the chemical structure of native and modified lignins. We describe and critically evaluate how these soft ionization methods have contributed to the present-day knowledge of the structure of lignins. Herein, we will introduce new nomenclature concerning the chemical state of lignins, namely, virgin released lignins (VRLs) and processed modified lignins (PML). VRLs are obtained by liberation of lignins through degradation of vegetable matter by either chemical hydrolysis and/or enzymatic hydrolysis. PMLs are produced by subjecting the VRL to a series of further chemical transformations and purifications that are likely to alter their original chemical structures. We are proposing that native lignin polymers, present in the li...
Le travail realise porte sur la caracterisation et la valorisation de la Biolignine™ de paille de... more Le travail realise porte sur la caracterisation et la valorisation de la Biolignine™ de paille de ble extraite a l'echelle semi-industrielle par le procede CIMV. La premiere partie est consacree a l'etude structurale du produit et a la quantification de ses diverses fonctions hydroxyles et acides carboxyliques. Dans la seconde partie, la Biolignine™ a ete utilisee, en tant que substituant du bisphenol-A, dans la synthese de resine epoxy. Les etudes de DSC et DLTMA ont demontre qu'apres post-reticulation, les resines epoxy Biolignine™-PEGDGE possedent des caracteristiques thermomecaniques comparables a celles d'une resine epoxy a base de bisphenol-A. Les resultats obtenus permettent desormais d'envisager la synthese de resines epoxy a base de Biolignine™ a plus grande echelle.
This review is devoted to the application of MS using soft ionization methods with a special emph... more This review is devoted to the application of MS using soft ionization methods with a special emphasis on electrospray ionization, atmospheric pressure photoionization and matrix-assisted laser desorption/ionization MS and tandem MS (MS/MS) for the elucidation of the chemical structure of native and modified lignins. We describe and critically evaluate how these soft ionization methods have contributed to the present-day knowledge of the structure of lignins. Herein, we will introduce new nomenclature concerning the chemical state of lignins, namely, virgin released lignins (VRLs) and processed modified lignins (PML). VRLs are obtained by liberation of lignins through degradation of vegetable matter by either chemical hydrolysis and/or enzymatic hydrolysis. PMLs are produced by subjecting the VRL to a series of further chemical transformations and purifications that are likely to alter their original chemical structures. We are proposing that native lignin polymers, present in the li...
Le travail réalisé porte sur la caractérisation et la valorisation de la Biolignine™ de paille de... more Le travail réalisé porte sur la caractérisation et la valorisation de la Biolignine™ de paille de blé extraite à l'échelle semi-industrielle par le procédé CIMV. La première partie est consacrée à l'étude structurale du produit et à la quantification de ses diverses fonctions hydroxyles et acides carboxyliques. Dans la seconde partie, la Biolignine™ a été utilisée, en tant que substituant du bisphénol-A, dans la synthèse de résine époxy. Les études de DSC et DLTMA ont démontré qu'après post-réticulation, les résines époxy Biolignine™-PEGDGE possèdent des caractéristiques thermomécaniques comparables à celles d'une résine époxy à base de bisphénol-A. Les résultats obtenus permettent désormais d'envisager la synthèse de résines époxy à base de Biolignine™ à plus grande échelle.This thesis relates the structural characterization and the application of wheat straw BiolignineTM extracted at semi-industrial scale by the CIMV process. The first part is the structural st...
This review is devoted to the application of MS using soft ionization methods with a special emph... more This review is devoted to the application of MS using soft ionization methods with a special emphasis on electrospray ionization, atmospheric pressure photoionization and matrix-assisted laser desorption/ionization MS and tandem MS (MS/MS) for the elucidation of the chemical structure of native and modified lignins. We describe and critically evaluate how these soft ionization methods have contributed to the present-day knowledge of the structure of lignins. Herein, we will introduce new nomenclature concerning the chemical state of lignins, namely, virgin released lignins (VRLs) and processed modified lignins (PML). VRLs are obtained by liberation of lignins through degradation of vegetable matter by either chemical hydrolysis and/or enzymatic hydrolysis. PMLs are produced by subjecting the VRL to a series of further chemical transformations and purifications that are likely to alter their original chemical structures. We are proposing that native lignin polymers, present in the li...
Le travail realise porte sur la caracterisation et la valorisation de la Biolignine™ de paille de... more Le travail realise porte sur la caracterisation et la valorisation de la Biolignine™ de paille de ble extraite a l'echelle semi-industrielle par le procede CIMV. La premiere partie est consacree a l'etude structurale du produit et a la quantification de ses diverses fonctions hydroxyles et acides carboxyliques. Dans la seconde partie, la Biolignine™ a ete utilisee, en tant que substituant du bisphenol-A, dans la synthese de resine epoxy. Les etudes de DSC et DLTMA ont demontre qu'apres post-reticulation, les resines epoxy Biolignine™-PEGDGE possedent des caracteristiques thermomecaniques comparables a celles d'une resine epoxy a base de bisphenol-A. Les resultats obtenus permettent desormais d'envisager la synthese de resines epoxy a base de Biolignine™ a plus grande echelle.
This review is devoted to the application of MS using soft ionization methods with a special emph... more This review is devoted to the application of MS using soft ionization methods with a special emphasis on electrospray ionization, atmospheric pressure photoionization and matrix-assisted laser desorption/ionization MS and tandem MS (MS/MS) for the elucidation of the chemical structure of native and modified lignins. We describe and critically evaluate how these soft ionization methods have contributed to the present-day knowledge of the structure of lignins. Herein, we will introduce new nomenclature concerning the chemical state of lignins, namely, virgin released lignins (VRLs) and processed modified lignins (PML). VRLs are obtained by liberation of lignins through degradation of vegetable matter by either chemical hydrolysis and/or enzymatic hydrolysis. PMLs are produced by subjecting the VRL to a series of further chemical transformations and purifications that are likely to alter their original chemical structures. We are proposing that native lignin polymers, present in the li...
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