arthur bouchut | INSA Lyon (original) (raw)
Uploads
Papers by arthur bouchut
Cellulose
A strategy to functionalize cellulosic surfaces through physical adsorption of xyloglucan (XG) an... more A strategy to functionalize cellulosic surfaces through physical adsorption of xyloglucan (XG) and carboxymethyl cellulose (CMC) derivatives bearing allyl or alkyne groups is reported. A set of functional polymer derivatives with degrees of substitution-DS-ranging from 0.4 to 0.44 are rst prepared through epoxide ring opening of allyl glycidyl ether (AGE) or propargyl glycidyl ether (PGE) under mild basic aqueous medium. Contrary to alkyne-based materials, radical copolymerization allyl-XG or-CMC derivatives with acrylamide/acrylic acid leads to the formation of hydrogels con rming thereby their reactivity. Investigations into the deposition of these derivatized polysaccharides on Whatman paper and wood pine bers further (spraying aqueous solutions, drying and desorption step in water) show that physisorption of the chains is not altered by the DS or by the nature of the anchored groups. QCM-D measurements highlight a high a nity of Allyl-XG for cellulose surface. Confocal Raman mapping of cellulosic substrates modi ed with alkyne derivatives indicate that the surface covering is quantitative and that the diffusion of the chains within the substrate can reach 40 µm. This aqueous functionalization/spraying procedure is a promising method to confer new ajustable properties to a range of cellulosic substrates in an eco-sustainable manner.
HAL (Le Centre pour la Communication Scientifique Directe), Mar 18, 2018
Développement d’une nouvelle méthode de fonctionnalisation qui aura pour but de pérenniser l’empl... more Développement d’une nouvelle méthode de fonctionnalisation qui aura pour but de pérenniser l’emploi des panneaux à base de bois et l’aspect de leur finition, en favorisant la stabilité de la couche supérieure exposée aux diverses conditions d’utilisation. En effet, les systèmes actuels, qui traitent très peu les panneaux en profondeur, sont très sensibles aux variations de température et d’humidité. Les éléments constitutifs des panneaux, hydrophiles, varient dimensionnellement, ce qui entraine l’apparition de fissures, de ruptures d’adhésion, et donc, d’obsolescence de la protection/finition avec le temps. Ceci est principalement le cas dans les conditions d’utilisation humides, telles que les salles de bains et les cuisines. Les panneaux perdent alors leur résistance mécanique qui justifiait leur emploi et se dégrade également visuellement. Objectif : Mise au point d’un revêtement pour panneaux de bois en utilisant une approche originale qui consiste à utiliser de façon concomitan...
Nanocomposites, 2016
Extraction of cellulose type I nanocrystals from cotton fibers was straightforwardly carried out ... more Extraction of cellulose type I nanocrystals from cotton fibers was straightforwardly carried out using exclusively Brønsted acid-type ionic liquids (ILs) via a two-step swelling/hydrolysis route, the switch between these two stages being induced by water addition. Since the whole process was achieved in a single reaction medium predominantly based on 1-butyl-3-methylimidazolium chloride ([BMIM]Cl) and 1-(4-sulfobutyl)-3-methylimidazolium hydrogen sulfate ([SBMIM]HSO 4), the process parameters were investigated in order to ensure a perfect compatibility and sequencing towards the two-step route proposed here. The impacts on nanoparticle morphology, crystallinity evolution, and cellulose type I to type II denaturation were observed under fieldemission gun scanning electron microscopy and corroborated by X-ray diffraction characterizations. ILs recovery and reuse were also demonstrated, opening up new prospects of conception of multicycle, environmentally and economically sustainable processes.
Université de Lyon, Jan 18, 2019
Cellulose
A strategy to functionalize cellulosic surfaces through physical adsorption of xyloglucan (XG) an... more A strategy to functionalize cellulosic surfaces through physical adsorption of xyloglucan (XG) and carboxymethyl cellulose (CMC) derivatives bearing allyl or alkyne groups is reported. A set of functional polymer derivatives with degrees of substitution-DS-ranging from 0.4 to 0.44 are rst prepared through epoxide ring opening of allyl glycidyl ether (AGE) or propargyl glycidyl ether (PGE) under mild basic aqueous medium. Contrary to alkyne-based materials, radical copolymerization allyl-XG or-CMC derivatives with acrylamide/acrylic acid leads to the formation of hydrogels con rming thereby their reactivity. Investigations into the deposition of these derivatized polysaccharides on Whatman paper and wood pine bers further (spraying aqueous solutions, drying and desorption step in water) show that physisorption of the chains is not altered by the DS or by the nature of the anchored groups. QCM-D measurements highlight a high a nity of Allyl-XG for cellulose surface. Confocal Raman mapping of cellulosic substrates modi ed with alkyne derivatives indicate that the surface covering is quantitative and that the diffusion of the chains within the substrate can reach 40 µm. This aqueous functionalization/spraying procedure is a promising method to confer new ajustable properties to a range of cellulosic substrates in an eco-sustainable manner.
HAL (Le Centre pour la Communication Scientifique Directe), Mar 18, 2018
Développement d’une nouvelle méthode de fonctionnalisation qui aura pour but de pérenniser l’empl... more Développement d’une nouvelle méthode de fonctionnalisation qui aura pour but de pérenniser l’emploi des panneaux à base de bois et l’aspect de leur finition, en favorisant la stabilité de la couche supérieure exposée aux diverses conditions d’utilisation. En effet, les systèmes actuels, qui traitent très peu les panneaux en profondeur, sont très sensibles aux variations de température et d’humidité. Les éléments constitutifs des panneaux, hydrophiles, varient dimensionnellement, ce qui entraine l’apparition de fissures, de ruptures d’adhésion, et donc, d’obsolescence de la protection/finition avec le temps. Ceci est principalement le cas dans les conditions d’utilisation humides, telles que les salles de bains et les cuisines. Les panneaux perdent alors leur résistance mécanique qui justifiait leur emploi et se dégrade également visuellement. Objectif : Mise au point d’un revêtement pour panneaux de bois en utilisant une approche originale qui consiste à utiliser de façon concomitan...
Nanocomposites, 2016
Extraction of cellulose type I nanocrystals from cotton fibers was straightforwardly carried out ... more Extraction of cellulose type I nanocrystals from cotton fibers was straightforwardly carried out using exclusively Brønsted acid-type ionic liquids (ILs) via a two-step swelling/hydrolysis route, the switch between these two stages being induced by water addition. Since the whole process was achieved in a single reaction medium predominantly based on 1-butyl-3-methylimidazolium chloride ([BMIM]Cl) and 1-(4-sulfobutyl)-3-methylimidazolium hydrogen sulfate ([SBMIM]HSO 4), the process parameters were investigated in order to ensure a perfect compatibility and sequencing towards the two-step route proposed here. The impacts on nanoparticle morphology, crystallinity evolution, and cellulose type I to type II denaturation were observed under fieldemission gun scanning electron microscopy and corroborated by X-ray diffraction characterizations. ILs recovery and reuse were also demonstrated, opening up new prospects of conception of multicycle, environmentally and economically sustainable processes.
Université de Lyon, Jan 18, 2019