Literatura académica sobre el tema "Polymères biosourcés – Synthèse (chimie)"
Crea una cita precisa en los estilos APA, MLA, Chicago, Harvard y otros
Consulte las listas temáticas de artículos, libros, tesis, actas de conferencias y otras fuentes académicas sobre el tema "Polymères biosourcés – Synthèse (chimie)".
Junto a cada fuente en la lista de referencias hay un botón "Agregar a la bibliografía". Pulsa este botón, y generaremos automáticamente la referencia bibliográfica para la obra elegida en el estilo de cita que necesites: APA, MLA, Harvard, Vancouver, Chicago, etc.
También puede descargar el texto completo de la publicación académica en formato pdf y leer en línea su resumen siempre que esté disponible en los metadatos.
Artículos de revistas sobre el tema "Polymères biosourcés – Synthèse (chimie)"
CAILLOL, Sylvain. "La vanilline : intermédiaire clé de la lignine à la synthèse de polymères biosourcés". Chimie verte, noviembre de 2018. http://dx.doi.org/10.51257/a-v1-chv4022.
Texto completoMazars, François. "Caffeine, a natural renewable resource for the synthesis of biobased catalysts". Bulletin de la Société Royale des Sciences de Liège, 2023, 153–70. http://dx.doi.org/10.25518/0037-9565.11461.
Texto completoTesis sobre el tema "Polymères biosourcés – Synthèse (chimie)"
Balarezo, Mauricio. "Synthèse de (co)polymères biosourcés par polymérisation radicalaire (contrôlée)". Electronic Thesis or Diss., Sorbonne université, 2023. http://www.theses.fr/2023SORUS006.
Texto completoTo be more respectful of the environment, chemists are moving more and more towards green and eco-responsible chemistry. In this context, we wished, in this thesis, to develop the synthesis of biosourced (co)polymers by radical polymerization using particularly reversible deactivation radical polymerization (RDRP). Indeed, this polymerization technique has allowed great progress in polymer chemistry because it combines the simplicity of radical polymerization with the advantages of living polymerizations for the development of well-defined macromolecular architectures. To achieve this, the biobased monomers used must contain a polymerizable function. Therefore, either biobased monomers or biobased molecules that have been functionalized were used. Among the RDRP methods, we opted for reversible addition-fragmentation chain transfer (RAFT) radical polymerization. We also combined this method with the "PISA" (polymerization-induced self-assembly) approach to generate biosourced amphiphilic block copolymers in a green solvent (mainly water) and thus obtain polymeric particles with spherical morphology. For the solvophilic block, we first opted for poly(acrylic acid) because acrylic acid (AA) can be obtained from renewable resources. We then also looked at two other biobased monomers: itaconic acid (IA) and α-methylene-γ- butyrolactone (MBL). Regarding the solvophobic block, we were first interested in menthol, a terpene with a hydroxyl function that was functionalized with an acrylate group. This allowed us to synthesize for the first time biosourced nanoparticles using the RAFT-PISA process in dispersion in a green solvent. In a second step, we worked on two lignin-derived styrenic monomers, acetylated vinyl guaiacol (AcVG) and para-acetoxystyrene (AcST). Spherical nanoparticles whose diameter can be modulated with the length of the hydrophobic block were obtained using the RAFT-PISA process in water emulsion
Hammami, Nadia. "Synthèse et étude des propriétés physico-chimiques de polymères biosourcés à base d'isosorbide". Thesis, Montpellier, 2018. http://www.theses.fr/2018MONTS127.
Texto completoThis research work aims to valorise isosorbide (IS) for biobased polymeric materials using original methods. After a short introduction of this molecule, we presented the different synthesis pathways and application fields of chemical and polymers already developed in scientific community. These compounds are classically obtained through many functionalization/synthesis steps with processes far away from green chemistry. Our first strategy based on the development of polyacetals derived from isosorbide (PAIS) was explained. A reaction scheme involving isosorbide with methylene halogenate in a non-toxic solvent (DMSO) was retained. The influence of different experimental parameters (stirring mode, reaction period and stoichiometry) was carefully analysed. Best results were achieved with high-speed mechanical stirring (more homogenous reactive solution, quantitative yield). The highest isosorbide concentrations led to the exclusive production of linear polyacetals (L-PAIS) whereas a low concentration under magnetic stirring conditions induced the formation of cyclic oligomers. Other macro-cycles (C-PAIS) with high molar weight were also produced. These different kinds of PAIS were characterised by various techniques (NMR, MALDI-TOF FTIR, SEC). Their physicochemical performances were also studied (TGA, DSC, rheology…) The length increase of polymer L-PAIS chains being challenged by cyclisation, we also explored lactide use (L- and racemic) as chain extender first by the reaction with IS then with L-PAIS. The La organometallic catalysis was more efficient than enzymatic pathway (PS lipase). Both chemical and physical analyses carried out with four polymeric grades derived from IS et lactide showed the added value of isosorbide molecule. Precise and reliable "structure-properties" relations including durability study were also led. Finally, similar approach could be applied for producing linear copolymers (PLLA-b-PAIS-b-PLLA and PRLA-b-PAIS-b-PRLA)
Poupon, Andy. "Synthèse d’oligoesters biosourcés pour application en formulation vernis à ongles". Thesis, Lille 1, 2020. http://www.theses.fr/2020LIL1R026.
Texto completoIn order to satisfy the consumer, the major groups from the cosmetic field wish to sell fully biobased nail polish, without loss of performance. Currently, most components of nail polishes can be biobased. However, the secondary film-forming agent, also called resin, remains an obstacle for the production of fully biobased performants nail polishes. This is the aim of this thesis: the development of a fully biobased resin leading to similar performances to the ones reached with their current oilbased equivalents. So, biobased oligoesters have been synthesized with isosorbide and 1,2-propanediol as diols and combination of carboxylic acids. Two different polyesterification processes have been studied. First, the synthesis of oligoesters has been carried out in one step by the modification of an industrial biobased resin which leads to a nail polish showing a lack of hardness and brightness. This incorporation of isosorbide has increased the Tg of these oligoesters. However, their formulation in nitrocellulose solution has produced cloudy solutions contrary to the oil based resins which have produced clear ones. This heterogeneity has been attributed to the presence of significant quantity of residual monomers, essentially isosorbide and 2,5-furandicarboxylic acid, and also may be to the insolubility of oligoesters in esters solvent due to their higher polarity. Therefore, those formulations have led to coatings with poor properties in terms of adhesion, brightness and hardness. The sequencing of the polymerization in two steps combined to the modification of hydroxy:acid ratio have improved the conversion of isosorbide and other monomers, leading to clear solutions during their formulation. Coatings made from these oligoesters mixed with nitrocellulose solution have exhibited better properties, similar to the coatings made with oilbased resin. But their use in a nail polish model formulation have showed poor properties. This decrease was attributed to the higher polarity of the oligoester and so, their lower solubility in ester solvents. Therefore, an additional biobased solvent more polar has been added to this model formulation to increase its polarity. This addition has led to an increase of the brightness bringing the properties closer to those obtained with oil based resins
Denis, Maxinne. "Synthèse d'additifs retardateurs de flamme biosourcés phosphorés pour l'élaboration de nouveaux polymères pour peinture bois à faible impact environnemental". Electronic Thesis or Diss., Montpellier, Ecole nationale supérieure de chimie, 2022. http://www.theses.fr/2022ENCM0021.
Texto completoSynthesis of new difunctional reactive phosphorus flame retardants monomers and study of their introduction into the polymer matrix by copolymerization. Tests of post-functionalization on conventional polymeric resins and evaluation of the flame retardant properties of the coating. Synthesis of new reactive phosphorus flame retardants from renewable resources to integrate in a partially biosourced polymer formulation
Tremblay-Parrado, Khantutta-Kim. "Synthesis by click chemistry of biobased polyurethane networks with advanced properties". Thesis, Strasbourg, 2020. https://publication-theses.unistra.fr/restreint/theses_doctorat/2020/TREMBLAY-PARRADO_Khantutta-Kim_2020_ED182.pdf.
Texto completoThe modern era was revolutionized by the invention of plastics and as such have gained prevalence in most aspects of our daily lives, causing an increasing appearance in landfills and oceans. For this reason, sustainable polymer design should not only require the use of renewable resources, but also factor in advanced properties to manage the end-of-life materials for the reduction of energy use, resources and waste. Developing covalent adaptable networks (CANs) has emerged as an interesting alternative to address this problematic, but with little to no application in the domain of biobased polyurethanes. In this work, we utilize the thermoreversible Diels-Alder reaction of the furan-maleimide coupling for the synthesis of vegetable oil derived polyurethanes (PUs) with thermo-reversible cross-linking points. Two new building blocks derived from sunflower oil, bearing furan and maleimide moieties, were obtained and incorporated into the synthesis of biobased PU networks. The obtained PU networks yield promising results in terms of polymer properties, thermal recyclability and heat-induced self-healing. The synthesized PU networks provide a stepping-stone in the development of biobased CANs
Lancien, Antoine. "Synthèse d’amines bio-sourcées à l’aide de procédés hybrides combinant des nanoparticules métalliques supportées et des transaminases". Thesis, Université de Lille (2018-2021), 2021. https://pepite-depot.univ-lille.fr/ToutIDP/EDSMRE/2021/2021LILUR059.pdf.
Texto completoThe objective of hybrid catalysis is to exploit the advantages of biological and chemical catalysts to access new synthetic routes that cannot be performed independently or to perform transformations that have shown low yields with conventional approaches. 5-Hydroxymethylfurfural (HMF) is a versatile platform (or building block) molecule that can be used in many industrial applications. In particular, the synthesis of biosourced amino polymers represents a promising method for its valorization. To date, very few studies have described the production of these amino derivatives and their polymers. Finding an efficient methodology to directly convert HMF to 5-aminomethyl-2-furancarboxylic acid (AMFC) is therefore a significant challenge. After selecting the best oxidation catalyst for the conversion of HMF to 5-aldehyde-2-furancarboxylic acid and immobilizing a transaminase on a solid support, we were able to implement the first "one-pot two-step" hybrid catalytic process to produce FMCA (77% yield). With 2,5-furandicarboxylic acid (FDCA, 23% yield) as the sole by-product, this represents the most efficient direct catalytic production method of FMCA from HMF reported to date. In addition, a hybrid "one-pot one-step" process for integrated production of FMCA from HMF was also developed with a maximum yield of 20%, this represents a first breakthrough for this platform molecule, and a first achievement for French hybrid catalysis. Finally, the synthesis of a hybrid multi-catalytic material combining palladium nanoparticles and a transaminase, on an EziGTMOPAL support, was achieved and its application led to a final yield of 10% in FMCA. Finally, this concept was also applied to the conversion of a panel of bio-sourced molecules, with in particular the transformation of myrtenol into its amino equivalent according to a "one-pot two-step" process with a yield higher than 99%
Nasr, Kifah. "Enzyme-catalyzed synthesis of polyesters by step-growth polymerization : a promising approach towards a greener synthetic pathway". Electronic Thesis or Diss., Université de Lille (2018-2021), 2021. http://www.theses.fr/2021LILUR030.
Texto completoEnzyme-catalyzed polymerization have been witnessing a growing attention in recent years as an eco-friendly substitute to metal-based catalysis. The objective of our work is to synthesize a series of polyesters via enzymatic catalysis based on different aliphatic and aromatic diols and diesters, where we focused on the influence of reaction parameters, monomer structures, and depicted the advantages and limitation of enzymatic catalysis in polymer synthesis. The enzyme used throughout our work was Novozym 435, a lipase from Candida antarctica, immobilized on an acrylic resin. In Chapter 1, we reviewed the different methods and approaches used in the literature to synthesize polymers via enzymatic catalysis. In Chapter 2, we performed the reaction between hexane-1,6-diol and diethyl adipate via a two-step polycondensation approach where we monitored the effect of certain parameters on the number average molecular weight (Mn). The influence of temperature, vacuum, and the amount of enzyme loading were determined using a central composite design. Other factors such as the reaction media, oligomerization time, and catalyst recyclability were also assessed. In Chapter 3 furan-based copolyesters were synthesized, where we showed that we can incorporate higher amounts of furan when using aliphatic diols with longer chains such as dodecane-1,12-diol. In Chapter 4, levoglucosan, an anhydrous 6-carbon ring structure and a pyrolysis product of carbohydrates such as starch and cellulose, was reacted against different chain length diesters in the presence of aliphatic diols and Novozym 435 as a catalyst. The polyesters produced were limited in their number average molecular weight (Mn) and the amount of levoglucosan that was successfully incorporated into the polymeric structure. Nevertheless, by increasing the chain length of the diester, we were able to produce a copolymer containing higher amounts of levoglucosan and a higher molecular weight
Savourat, Pauline. "Structure et propriétés de polusaccharides et copolymères biosourcés obtenus par synthèse enzymatique". Thesis, Nantes, 2018. http://www.theses.fr/2018NANT4107.
Texto completoDue to their limited carbon footprint, polysaccharide-based materials are attractive alternatives to fossil carbon based polymers. These macromolecules, which are generally biodegradable, biocompatible and highly hydrophilic . present mechanical properties that are still insufficient for applications in the field of structural materials or most non-food uses. However, their natural sensitivity to water and their biocompatibility can be used in applications with high added value, for example stimulable materials or materials for biomedical use. The project aims to produce diblock copolymers only consists of polysaccharides by combining glycoenzymology and protein engineering. The objective is to obtain new properties by associating the intrinsic properties of the building blocks. Therefore, much of this work has focused to determine and understand the relationships between the structure and the properties of a large panel of synthetic alpha-glucans, including the role of the type and/or the rate of osidic linkages in the main chain or in branching. This approach has made it possible to target the constituent blocks of original copolymers. A wide range of techniques has been used to characterize the structure, the behaviour of molecules in solution and the materials formed. Thus, this work is the subject of major advances in the understanding of the structure / conformation I properties relations of polysaccharides
Zhao, Yuxi. "Synthèse de donneurs d’électrons organiques : application en synthèse organique et chimie des polymères". Electronic Thesis or Diss., Aix-Marseille, 2021. http://www.theses.fr/2021AIXM0156.
Texto completoOrganic electron donors (OEDs) with exceptionally negative redox potentials have attracted considerable attention in organic synthesis as powerful reducers. They enable the spontaneous transfer of one or two electrons to organic substrates, to form radical or anionic intermediates. Nevertheless, the structural diversity of OEDs is limited and their application scope quite narrow. In this thesis, we first developed novel libraries of OEDs in order to identify new families of organic reducers, broaden the range of redox potentials and access new reducing reactivities. Appropriate structural modulations on seven categories of iminium salts gave access to powerful OED with various reducing abilities. It also allowed to rationalize the factors governing single- or double-electron transfers according to the OED structures and the reaction conditions. A more thorough mechanistic investigation was conducted to formally confirm the active electron donor species at work.Finally, OEDs also appeared to be remarkable organic redox initiating systems for both free radical and anionic polymerization reactions. While the anionic propagation was promoted by direct reduction of the monomer, simple addition of a competing oxidant with a higher reduction potential allowed to switch to a clean free radical propagation process. Scope investigation exhibited excellent applicability of these self-initiating polymerization strategies, which enabled the preparation of a large array of (co-)polymers with high added values
Saadaoui, Asma. "Développement de nouveaux monomères biosourcés à base d’Isosorbide et applications à la synthèse de matériaux à applications spécifiques". Thesis, Lyon, 2017. http://www.theses.fr/2017LYSE1036.
Texto completoThe isosorbide and its derivatives are chiral diols obtained from cornstarch. The use of the latter as a monomer for the development of polymers has proved to be effective. The diols match the properties of conventional polymers. As part of this thesis, the diols are used to synthesize new platforms of bio based AA and AB from the 1,4: 3,6 - dianhydrohexitols monomers. The synthesis of intermediaries based on dinitriles or mononitrilies and their derivaties starting from the three isomers as well as the test results from one of these promising monomers polymerization which have been described. The resulting polymer revealed semi-cristallin through stereoregulier AB monomers layout. This work is also the first to describe the use of the reticulants chiral at base of 1.4: 3, 6-dianhydrohexitols participating in the formation of three-dimensional network for the development of polymers to footprints (MIP) Excelsior for detection of Methyltestosterone (MT). The polymers synthesized by polymerization have been characterized by precipitation. The properties of retention were evaluated in batch mode by HPLC-MS/MS. These MIPs present good properties of adsorption towards the MT with factors of footprint greater than 1 showing the effectiveness of printing. These materials have a good ability of adsorption compared to literature. Unprinted polymers (PIN) have shown even greater adsorption capacity than the conventional MIP. The high adsorption capacity was observed in cMIP-Is based on isosorbide for the concentrations (500 mg L-1). The experimental data have been studied according to Langmuir and Freundlich adsorption models to interpret the phenomena of adsorption these developed cMIP have been adapted for the methyltestoterone on the phase of extraction (SPE) solid. An extraction procedure has been developed leading through a full optimization finalized by an application in wastewater
Libros sobre el tema "Polymères biosourcés – Synthèse (chimie)"
Nicola, Hüsing, ed. Synthesis of inorganic materials. Weinheim: Wiley-VCH, 2000.
Buscar texto completoAguado, Jose, Clark James H, David P. Serrano, M. J. Braithwaite y R. S. Drago. Feedstock Recycling of Plastic Wastes. Royal Society of Chemistry, The, 2007.
Buscar texto completoFeedstock Recycling of Plastic Wastes (Royal Society of Chemistry Clean Technology Monographs). Royal Society of Chemistry, 1999.
Buscar texto completoCapítulos de libros sobre el tema "Polymères biosourcés – Synthèse (chimie)"
Fontanille, Michel y Yves Gnanou. "10. Synthèse macromoléculaire". En Chimie et physico-chimie des polymères, 335–58. Dunod, 2014. http://dx.doi.org/10.3917/dunod.fonta.2014.01.0335.
Texto completoAverous, Luc. "Chapitre 13 : Le défi des matériaux polymères biosourcés". En Chimie et matériaux stratégiques, 239–52. EDP Sciences, 2024. http://dx.doi.org/10.1051/978-2-7598-3486-0.c015.
Texto completoDEL MAR SAAVEDRA RIOS, Carolina, Adrian BEDA, Loic SIMONIN y Camélia MATEI GHIMBEU. "Le carbone dur pour les batteries Na-ion : de la synthèse aux performances et mécanismes de stockage". En Les batteries Na-ion, 123–74. ISTE Group, 2021. http://dx.doi.org/10.51926/iste.9013.ch3.
Texto completo