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Academic literature on the topic 'Polymérisation radicalaire par transfert d’atome'
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Dissertations / Theses on the topic "Polymérisation radicalaire par transfert d’atome"
Roudot, Angélina. "Emulsions et solutions aqueuses de micelles gelées de copolymères diblocs poly[styrène-bloc-poly(styrène-statistique-méthacrylate de diméthyle aminoéthyle)] synthétisés par polymérisation radicalaire par transfert d’atome." Paris 6, 2008. http://www.theses.fr/2008PA066238.
Full textDupayage, Ludovic. "Élaboration contrôlée de glycopolymères amphiphiles à partir de polysaccharide : synthèse de Dextrane-g-PMMA par polymérisation radicalaire par transfert d'atome." Thesis, Vandoeuvre-les-Nancy, INPL, 2009. http://www.theses.fr/2009INPL011N/document.
Full textSynthesis of the new comb-like amphiphilic glycopolymer dextran-g-poly(methyl methacrylate) was obtained thanks to an Atom Transfert Radical Polymerization (ATRP). In order to control the macromolecular parameters of these biocompatible and partly biodegradable glycopolymers, the “grafting from” strategy was applied using two different multi-step pathways. The first one is composed of four steps: partial acetylation of dextran hydroxyl groups; introduction of initiator groups convenient for ATRP; ATRP of methyl methacrylate in dimethylsulfoxide; acetyl group deprotection under mild conditions. The second pathway allows us to obtain such glycopolymers in only two steps: direct introduction of the same initiator groups onto the dextran chain and subsequent ATRP of methyl methacrylate in dimethylsulfoxide. Throughout the synthesis, detailed studies of each step enabled us to estimate the length of the dextran backbone and to assure the control of copolymer architecture in terms of graft number and graft length. Preliminary interfacial tension measurements highlighted the surfactant properties of such glycopolymers
Airaud, Cédric. "Couplage ROMP et ATRP en milieu dispersé aqueux : préparation et étude morphologique de particules polymères composites." Thesis, Bordeaux 1, 2008. http://www.theses.fr/2008BOR13698/document.
Full textSo as to broaden the scope of their applications in paints, coatings and impact-resistant plastics, many investigations have been dedicated to the preparation of nanostructured colloids over the past decades. Original morphologies including core-shell, hemispherical and complex occluded structures (raspberry-like, golf ball-like, octopus-like) can now be readily prepared. This work proposes a new straightforward one-pot, one-step, one-catalyst strategy to prepare polymer composite particles based on the simultaneous combination of two mechanistically distinct polymerizations in aqueous dispersed media. Norbornene (NB) and methyl methacrylate (MMA) were converted via Ring-Opening Metathesis Polymerization (ROMP) and Atom-Transfer Radical Polymerization (ATRP), respectively. Two original routes, designed to ensure simultaneous ROMP and ATRP, respectively under mini- and microemulsion conditions, are proposed. Both are successively reviewed on chemical and colloidal levels. Specific attention is paid to the morphologies of the prepared particles
Chabrol, Virginie. "Functionalized latex particles as substrates for metal mediated radical polymerization." Phd thesis, Université Claude Bernard - Lyon I, 2012. http://tel.archives-ouvertes.fr/tel-01012004.
Full textZivic, Nicolas. "Synthèse de naphtalimides et dicétopyrrolopyrroles originaux pour les photopolymérisations radicalaire et cationique dans des conditions d'irradiation douces." Thesis, Aix-Marseille, 2017. http://www.theses.fr/2017AIXM0056/document.
Full textPhotoinitiated polymerization has gained significant importance in industry as illustrated by the large number of applications of this technique in conventional areas such as coatings, inks, and adhesives but also high-tech domains, like optoelectronics, laser imaging, stereolithography, and nanotechnology. Indeed, photopolymerization presents several advantages such as decreasing the time of reaction, the possibility to be performed at room temperature or without solvents limiting the formation of volatile organic compounds. Moreover, the possibility to irradiate with high precision specific zones allows the spatial-control of the polymerization. Since 2011, photoinitiating systems able to initiate polymerization under soft light irradiation sources have been the subject of intense efforts to minimize the risks and the cost related to UV irradiation. However, even if some results are promising, the reported systems still present moderate reactivity and can hardly compete with actual UV systems. In this context, we have synthesized a large library of photosensitive molecules based on naphthalimide and dicetopyrrolopyrrole derivatives are able to initiate the polymerization under soft irradiation sources. The ad hoc functionalization of the chromophore and the consequent tuning of the photochemical properties have been used to develop highly efficient photoinitiating systems able to absorb into the near UV and visible spectra emitted by LED
Morandi, Gaëlle. "Synthèse de copolymères greffés par combinaison de polymérisation radicalaire par transfert d'atome (ATRP) et de polymérisation par ouverture de cycle par métathèse (ROMP)." Le Mans, 2007. http://cyberdoc.univ-lemans.fr/theses/2007/2007LEMA1012.pdf.
Full textThe objective of this work is the synthesis of graft copolymers based on a poly(buta-1,4-diene) backbone by combination of atom transfer radical polymerization (ATRP) and ring-opening metathesis polymerization (ROMP). Two synthetic approaches were developed: the grafting through and the grafting from methods. Original cyclobutenic inimers were first synthesized and their efficiency as ATRP initiator was studied. They were then engaged in ATRP of styrene and tert-butyle acrylate (tBA) to access well-defined (alpha)-cyclobutenyl PS and PS-b-PtBA macromonomers. ROMP of these macromonomers has conducted to well-defined PB-g-(PS-b-PtBA) graft copolymers through an original combination between ROMP, ATRP and grafting through strategy never reported before. The grafting from strategy was also developed. ROMP of cyclobutenic inimers was first conducted, leading to polyfunctional PB backbones of various sizes. A range of well-defined high molecular weight PB-g-PtBA graft copolymers was then synthesized by initiation of ATRP from these PB backbones. Finally, a first attempt of ROMP of norbornene in aqueous media stabilized by original (alpha)-cyclobutenyl PS-b-PAA macromonomers was also conducted. This experiment has led to promising results
Rayeroux, David. "Polymérisation radicalaire contrôlée par transfert d'iode en mode inverse (RITP) : Synthèse de copolymères amphiphiles." Thesis, Montpellier, Ecole nationale supérieure de chimie, 2012. http://www.theses.fr/2012ENCM0025/document.
Full textThis manuscript describes the synthesis of amphiphilic diblock copolymers by reverse iodine transfer polymerization (RITP). Firstly, homopolymers derived from activated (styrene, methyl acrylate, methyl methacrylate), non-activated (vinyl acetate) and functional monomers (chloromethylstyrene, tert-butyl acrylate) synthesized by RITP, were studied. Aspects including molecular weight control as well as iodine chain-end functionality were investigated. In order to highlight the compatibility of RITP with other living/controlled (non-radical) polymerization techniques, a poly(styrene)-b-poly(2-methyl-2-oxazoline) (PS-b-P(MOx)) non-ionic copolymer was conceived through an ‘all-iodine', ‘one-pot' process by combining successively RITP of styrene with cationic ring-opening polymerization (CROP) of 2-methyl-2-oxazoline. Besides, poly(styrene)-b-poly(chloromethylstyrene) quaternized with triethylamine (PS-b-PCMS+) cationic copolymers and poly(styrene)-b-poly(acrylic acid) (PS-b-PAA-) anionic copolymers were elaborated by RITP of styrene, followed by ITP of the hydrophilic moiety. All these amphiphilic copolymers were obtained from iodine-bearing chain-end poly(styrene) (PS-I) of low molecular weights, in the range of values of 1000 to 3000 g.mol-1, playing the role of macro-initiators (CROP) or macro-transfer agents (ITP). Studies of the self-assembly of these amphiphilic copolymers in aqueous phases revealed the formation of micelles for concentrations superior to the critical aggregation concentration (CAC). The latter value was determined by dynamic light scattering (DLS) and fluorescence spectroscopy. Moreover, highly-promising results were obtained in the use of PS-b-PCMS+ cationic copolymers as structuring agents meant for the elaboration of nanostructured, mesoporous silica-based materials through the sol-gel process in basic medium. Both the synthesis of the amphiphilic copolymers and their physico-chemical characterizations have evidenced that RITP fosters the synthesis of different categories of amphiphilic copolymers, while being a simple, cheap and robust technique
Fournier, David. "Polymérisation radicalaire contrôlée par transfert d'atome (ATRP) de la diméthylvinylazlactone : application à l'élaboration de supports réactifs." Le Mans, 2005. http://cyberdoc.univ-lemans.fr/theses/2005/2005LEMA1002.pdf.
Full textAmong the controlled/living radical polymerization techniques, ATRP has been extensively investigated since it provides well-defined polymers with controlled topology and functionality. However, the ATRP requires the presence of a transition metal complex such as copper complex, which contaminates the final polymer. Our works are based on the decrease of the copper residue in the final polymer. Our study is focalised on the immobilisation of a ligand able to complex copper onto solid supports. 2-Vinyl-4,4-dimethylazlactone (VDM) and styrene have been copolymerized by ATRP onto Wang resin prealably converted into an ATRP initiator. The supported (co)polymers containing a bromine chain-end and azlactone rings were modified by an amine used as ligand for copper bromide immobilization. Resulting supported ligands were studied through heterogeneous copper-mediated living radical polymerization. The application of those supported (co)polymers has been extended as nucleophilic scavengers and these original solid supports showed a very good behavior towards the reactivity with primary amine
Angot, Stéphanie. "Polymérisation radicalaire contrôlée par transfert d'atome : synthèse et caractérisation de (co)polymères en étoile et dendritiques." Bordeaux 1, 1999. http://www.theses.fr/1999BOR10589.
Full textRead, Emmanuelle. "Nouveaux copolymères thermoépaississants par polymérisation radicalaire contrôlée RAFT/MADIX : synthèse, caractérisation et propriétés rhéologiques." Toulouse 3, 2014. http://www.theses.fr/2014TOU30159.
Full textThis work deals with the synthesis of watersoluble thermoassociative polymers by controlled radical copolymerization by reversible addition-fragmentation chain transfer, RAFT/MADIX. These statistical polymers are made of poly(acrylamide-stat- 2-acrylamido-2-methylpropane sulfonic acid sodium salt) hydrophilic backbone and Jeffamine® LCST side chains incorporated by copolymerisation of the corresponding acrylamido macromonomer. The intermolecular side chain associations in hydrophobic microdomains lead to thermothickening properties under constant shear rate. Synthesis parameters were optimized (temperature, solid content, transfer agent concentration) in order to obtain ultra-high molecular weight polymers with limited crosslinking mainly derived from undesirable transfer to polymer induced by Jeffamine® side chains. Thorough characterization methods, such as rheokinetic, dynamic rheology and size exclusion chromatography coupled with light scattering detection, were applied to determine which parameters were able to limit polymer crosslinking. The viscosifying properties were monitored in steady state rheology measurements in semi-dilute regime