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Дисертації з теми "Copolymères ioniques"
Lambert, Romain. "Nouveaux copolymères et nanostructures dérivés de liquides ioniques à base d'imidazoliums : applications en catalyse et comme additifs conducteurs ioniques." Thesis, Bordeaux, 2016. http://www.theses.fr/2016BORD0306/document.
Повний текст джерелаPoly(ionic liquid)s (PILs) in the form of random copolymers, single chain nanoparticles(SCNPs), or self assembled block copolymers have been used as N-heterocyclic carbenes(NHCs) precursors for the purpose of organic and organometallic catalysis. Introducing acetate derivative counter anion in imidazolium based PIL units enable in situ generation of catalyticallyactive NHC. SCNPs have been specially designed along two strategies including, firstly, a self quaternization reaction involving two antagonists groups supported on to the polymer chain and,secondly, an organometallic complexation featuring palladium salt. Both polymeric precursors were obtained using RAFT as controlled polymerization method. Amphiphilic block copolymers composed of a PIL block functionalized by palladium have been synthesized by RAFT and self-assembled in water, leading to micellar structures. Confinement effect has been demonstrated through Suzuki and Heck coupling in water showing kinetic gain compared to molecular homologue in addition to an easier recycling method.Finally, PIL-benzimidazolium based block copolymers with lithium bis(trifluoromethane)-sulfonylimide anion have been developed as ionic conductor doping agent for PS-PEO matrix. Thin films blends with minimum doping agent amount led to optimum ionic conductivity owing tolong range order
Bui, Thi Tuyet Van. "Redox active ionic liquids from synthesis to surface modification : grafting and surface polymerization towards functional electrode materials." Sorbonne Paris Cité, 2015. http://www.theses.fr/2015USPCC205.
Повний текст джерелаIonic liquids (ILs) are described as a new class of molten salts consisting entirely of ions having a melting point below 100°C. Ionic liquids constitute a class of materials with many promising applications in very diverse fields. Their properties can be tailored by modifying the combination of ions in their composition. The introduction of the functional group forms "functionalized or task-specific ionic liquids" and allows us to tune the property for a particular application. Taking the advantage of introducing a monomer group to ILs, we can give rise a new family of functional polymer labeled polymeric ionic liquids or poly(ionic liquids) (PILs). ILs or PILs containing redox active groups are interesting because of their different applications such as molecular electronics, (bio)analytical sensor, energy transduction materials, electrochemical actuator, smart surfaces, solar cells, organic memory devices, as well as polymer based batteries. Since 2000, the research on ionic liquid-modified electrodes became intensively developing area. In term of electrochemical approach and considering the above factors, the work in this thesis focused on three points: i) synthesis of redox active ionic liquids, ii) grafting redox active ionic liquids by electrochemical process, iii) immobilization of redox poly(ionic liquids) on electrode surface. This thesis contains six chapters : -Chapter 1 presents an overview of ionic liquids and Poly(ionic liquids), their composition synthesis and use in electrochemical investigations. -Chapter 2 concentrates on the synthesis of ionic liquids (ILs) and report their protocol. - Chapter 3 reports the immobilization of task-specific ionic liquids on carbon electrodes by means of electrochemical grafting. Chapter 4 studies the formation redox Poly(ionic liquids) onto carbon electrode surfaces using four methods: direct electropolymerization, Graft-fast, Surface Electro-initiated Emulsion Polymerization (SEEP) and Surface-Initiated Atom Transfer Radical Polymerization (SI-ATRP). -Chapter 5 envisages the preparation of bi-functional PILs containing both ferrocene and anthraquinone on polymer chain by SI-ATRP method. -Chapter 6 lists the conclusions of this thesis and displays future prospects for the bi-functional materials
Nicolas, Mathieu. "Synthèse de copolymères ioniques réactifs pour la fonctionnalisation de nanocellulose : application au développement de membranes échangeuses d’ions." Thesis, Lyon, 2021. https://tel.archives-ouvertes.fr/tel-03789605.
Повний текст джерелаIon exchange membranes (or electrolyte membranes) currently used in electrochemical storage devices (batteries and fuel cells) are generally the result of a polluting, complex and expensive synthesis. The most studied architecture is a perfluorosulfonated ionomer known as Nafion, which fulfills almost all the prerequisites of a high-performance ion membrane: high mechanical and thermochemical resistance, high ionic conduction and low swelling. Nanocellulose is a biosourced polymer material that can be used for the production of membranes, also called nanopapers with excellent mechanical strength. However, these materials must be chemically modified to fulfill the role of a polymer electrolyte membrane. The objective of this thesis is therefore to synthesize new electrolyte membranes from the surface grafting of reactive copolyélectrolytes to nanocelluloses. This “grafting onto” technique is based on the presence of reactive primary amine functions within the copolyélectrolyte. These may react by reductive amination with aldehyde functions located on the surface of nanocelluloses and previously introduced by a sodium periodate (NaIO4) oxidation step. In the first place, radical copolymerization was used to synthesize these reactive polyelectrolytes following two distinct approaches. The first approach consisted in modifying a poly(styrene sulfonate)-co-poly(acrylamide) precopolymer (PSS-PAA) by the Hofmann reaction to form a poly(styrene sulfonate)-co-poly(vinylamine) (PSS-PVAm) containing between 6 and 58% of amine functions. The second approach was based on the chemical modification of a poly(styrene sulfonate)-co-poly(chloromethyl styrene) copolymer (PSS-PCMS) by a diamine via nucleophilic substitution to obtain the amino derivative poly(styrene sulfonate)-co-poly(benzylamine) (PSS-PBA). In a second part, the grafting of commercial polyamines and synthetized copolyelectrolytes onto oxidized nanocelluloses by reductive amination was studied. In particular, it was shown that the amount of grafted commercial polyamine could be simply adjusted with the main experimental parameters, reaching an IEC of 4.5 meq/g. However, the grafting of the synthesized copolyelectrolytes was limited by issues of solubilization of cellulosic fragments. The study of the influence of the membrane composition on ionic conductivity and mechanical properties showed an increase in conductivity up to 1.1 mS/cm (3.1 meq/g), while the maximum tensile strength (4.0 MPa) was measured for an intermediate IEC value of 1.6 meq/g
Braun, Olivier. "Synthèse en microémulsion de polymères ioniques stimulables et étude de leurs propriétés en solution aqueuse." Université Louis Pasteur (Strasbourg) (1971-2008), 2001. http://www.theses.fr/2001STR13218.
Повний текст джерелаBurguiere, Carine. "Synthèse de copolymères à blocs amphiphiles ioniques par polymérisation radicalaire contr^olée : utilisation comme stabilisants en polymérisation radicalaire en émulsion." Paris 6, 2001. http://www.theses.fr/2001PA066402.
Повний текст джерелаGandasasmita, Suryo. "Synthèse et électropolymérisation de monomères pyrroliques contenant des échangeurs de cations et des complexants macrocycliques : caractérisations des films polymères en présence de solutions ioniques." Montpellier 2, 2001. http://www.theses.fr/2001MON20124.
Повний текст джерелаLe, Coz Botrel Ronan. "Application de la métathèse à la dégradation contrôlée de polydiènes pour la synthèse de copolymères et à l'élaboration d'ionogels." Thesis, Normandie, 2019. http://www.theses.fr/2019NORMC261.
Повний текст джерелаThe work described in this thesis has been devoted to the synthesis of poly(isoprene-co-norbornene)-type copolymers and homopolymers of the poly-norbornene type. These polymers were then exploited for the preparation of ionogels.Homopolymer synthesis is based on ring-opening metathesis polymerization of various norbornene derivatives. As for the copolymers, they were obtained by coupling this polymerization reaction and cross-metathesis from polyisoprene and functional-ized norbornenes.In a first step, the copolymer synthesis process was studied and optimized with synthetic polyisoprene, then it was extended to cryobrushed truck tire waste, making it possible to obtain poly(isoprene-co-norbornene) with a mass yield of 15%.The preparation of chemical ionogels by ring-opening metathesis polymerization of bisnorbornenes in [C4C1im][PF6] has been optimized to allow the formation of two types of ionogel that can contain up to 92 wt% ionic liquid. The chemical ionogels ob-tained here have conductivities close to that of [C4C1im][PF6] alone
Deschênes, Louise. "Organisation moléculaire de films de Langmuir de polymères non-ioniques. Cas du PEO et effet de la nature du bloc hydrophobe sur ses copolymères blocs à l'interface air/eau." Thesis, Université Laval, 2008. http://www.theses.ulaval.ca/2008/25354/25354.pdf.
Повний текст джерелаDeschênes, Louise. "Organisation moléculaire de films de langmuir de polymères non-ioniques : cas du PEO et effet de la nature du bloc hydorphobe sur ses copolymères blocs à l'interface air/eau." Doctoral thesis, Université Laval, 2008. http://hdl.handle.net/20.500.11794/19896.
Повний текст джерелаCoupillaud, Paul. "Reactive Poly(ionic liquid)s (PILs) and Nanostructures from PIL-based Block Copolymers." Thesis, Bordeaux, 2014. http://www.theses.fr/2014BORD0185/document.
Повний текст джерелаThe aim of this PhD work is to expand the scope of engineered imidazolium-based poly(ionicliquid)s (PILs) and their related PIL-block copolymers (PIL BCPs).The use of the imidazolium-based PILs as true reactive polymers for organocatalysis and post-chemicalmodification is first described. Miscellaneous air-stable PIL derivatives featuring various counter-anions(e.g. bromides, hydrogen carbonates, carboxylates), including homopolymers, statistical copolymers ofstyrenic-type and crosslinked copolymer networks have been specifically designed by relatively simplesynthetic strategies. The generation of related polymer-supported N-heterocyclic carbenes, poly(NHC)s,enables comparing the catalytic performances in selected organocatalyzed reactions. Specific polystyrenebasedcoPILs can be also stoichiometrically derivatized by post-chemical modification using variouselectrophilic substrates (e.g. CS2, isothiocyanate, transition metals).A novel family of imidazolium-based PIL BCPs, namely poly(vinyl acetate)-b-poly(N-vinyl-3-alkylimidazolium bromide)s synthesized by CMRP, is then described. The ability of these compounds toself-assemble into various types of mesostructures in bulk or in solution has been demonstrated. Ionicconductivity measurements evidenced the influence of sample preparation and measurement conditions.The behavior in solution evidenced via the ionic responsiveness of the PIL block but also by post-chemicalmodification of the hydrophobic poly(vinyl acetate) block into hydrophilic poly(vinyl alcohol) theformation of various micelle-like nanostructures.Keywords: Poly(ionic liquid)s, Block copolymers, Imidazolium, Organocatalysis, Post-polymerizationmodification, Self-assembly, Ionic conductivity, Gold nanoparticles
El objetivo de esta tesis fue el desarrollo de polímeros de ingeniería iónicoslíquidos (pils) y tipo imidazolio una nueva familia de copolímeros de bloques relacionados.Lager tipo imidazolio fueron utilizados como reactivos para la catálisis orgánica ymodificación química de polímeros después de la polimerización. Varios compuestos(homopolímeros, copolímeros aleatorios de tipo estireno, polímeros reticulados) estable en elaire, contra de la realización diversos aniones (bromuros, bicarbonatos, carboxilatos), hansido especialmente diseñadas utilizando estrategias de síntesis relativamente simple. Se utilizóla generación de carbenos N-heterocíclicos soportado sobre polímeros (poli (NHC) s) paracomparar el rendimiento catalítico de estos precursores de referencia a través de reacciones decatálisis orgánica. Específicamente, los copolímeros de tipo estireno también se puedenfuncionalizar sustratos por polimerización posterior estequiométricamente con diferenteselectrófilos (por ejemplo, metales CS2, isotiocianato, de transición).Una nueva familia de copolímero de bloque que contiene un poli (acetato de vinilo) y unbloque de poli (bromuro de N-vinil-3-alquilimidazolio) se sintetizó en CMRP. La capacidadde estos compuestos a auto-ensamblan en varias mesoestructuras como entonces se demostrósolución en masa. Mediciones de conductividad iónica han demostrado la influencia de lascondiciones de preparación y medición de la muestra en los valores obtenidos. Elcomportamiento en solución por el bloque PIL reactividad de iones, y la modificaciónquímica del bloque hidrófobo de poli (acetato de vinilo) hidrófilo poli (alcohol vinílico)permitió la formación de nanoestructuras diferentes micelares.Palabras clave: polímeros líquidos iónicos, copolímeros de bloque, imidazolio, catálisisorgánica, Cambiar post-polimerización, auto-ensamblaje, conductividad iónica, lasnanopartículas de oro