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Laboratoire de Chimie des Polymères Organiques (Bordeaux)

Overview
Works: 115 works in 116 publications in 2 languages and 116 library holdings
Roles: Other, Degree grantor
Publication Timeline
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Most widely held works by Laboratoire de Chimie des Polymères Organiques (Bordeaux)
Nanoparticules hybrides thermosensibles pour la théranostique by Stéphanie Louguet( Book )

2 editions published in 2011 in French and held by 2 WorldCat member libraries worldwide

This work deals with the development of hybrid nanoparticles that could offer new strategies for therapy and diagnostic. These are based on a magnetic core which can play the role of contrast agent for MRI as well as heat inductor in AC magnetic field. This inorganic core is surrounded by a thermo-responsive polymeric brush that controls the loading and the release of drugs, and can be functionalized by specific ligands ensuring the targeting specificity. A large part of this work consists in studying the adsorption mechanism of poly(ether)-b-poly(L-lysine) based block copolymers onto magnetic particle and to better understand the influence of the polymer chain conformation at particles surface on the colloidal stability under physiological conditions. An anticancer drug has been loaded and released in a controlled manner under alternative magnetic field by taking advantage from the thermosensitivity of the polyether block. Targeting peptides specific of inflammation sites at the blood brain barrier have been grafted onto copolymers. The targeting specificity has been demonstrated by MRI and fluorescence imaging in rats attesting the multifunctionality of such nanoparticles
Fonctionnalisation de matériaux moléculaires magnétiques : vers des systèmes soluble et cristaux liquides by Diana Siretanu( )

1 edition published in 2011 in English and held by 1 WorldCat member library worldwide

In this thesis, we tried to develop hybrid magnetic material chemistry in order to get soft systems that can be easy-processable. This work deals with functionalization of the organic part of interesting molecule-based magnetic materials by groups known to induce liquid crystal phase or to increase the solubility. We achieved the rational functionalization of molecule-based magnetic materials, like (i) Single-Molecule Magnets (SMM), (ii) Spin Crossover (SC), and (iii) Electron Transfer (ET) systems, towards more soluble systems and liquid crystal phases.Chapter I contains general information about three important classes of magnetic complexes: SMMs, SC and ET systems. In order to illustrate the motivation of our work, a bibliographic study about hybrid magnetic materials is then presented. Rational ligand functionalization of SMMs and SC systems towards liquid crystalline phases are discussed in Chapter II and III, respectively. New functionalized Mn12 complexes, FeII/triazole-based and [FeII(LN2O2)(LN)2] systems were obtained. The conservation of magnetic properties after ligand functionalization was confirmed, but unfortunately, these new compounds do not show mesomorphic behaviour below the decomposition temperature. The Chapter IV is focused on ligand functionalization of ET complexes. Alkyl functionalization of the ligand provides a good solubility to these complexes, and the thermally-induced switchable behaviour observed in solid state has been successfully transferred to dilute solutions
Nanostructuration contrôlée de films de polymères by Igor Siretanu( )

1 edition published in 2011 in English and held by 1 WorldCat member library worldwide

It is well known that the importance and the applications of surface structuration in Nature and in technology are widespread. Simple patterns, such as surface waves, are indispensable in some natural processes and may have direct application to technological innovations. In this thesis I investigate novel methods of structuring and control structure formation process in thin polymer films, particularly at temperatures lower than their glass transition. We have found that the surface of glassy polystyrene can be reconstructed at room temperature either by direct or indirect application of an electric field, strongly suggesting that a layer of enhanced mobility indeed exists at the surface of this glassy polymer. Additionally through this thesis we present a novel developed way to induce and control submicron structures on hydrophobic substrates by a single, simple treatment step based on treating the substrate with degassed aqueous solution. This nanostructuration is the result of close adsorption of charged species on the hydrophobic polymeric surface building a high electric field, which, combined with the mobility of the polymer surface, induces the deformation of the polymer substrate. Since, the direct study of properties of this specific near free surface region of thin polymer films is very rare due to the limited suitable experimental techniques; we have completed an extensive study of influence of supporting substrate and the temporal relaxation of previously polymer structured surfaces by above described methods
Chemoselective modifications of recombinant elastin-like polypeptides : tuning thermosensitivity and bioactivity by Rosine Petitdemange( )

1 edition published in 2016 in English and held by 1 WorldCat member library worldwide

La thèse présentée porte sur la préparation de dérivés de polypeptides recombinant à base de motifs élastine (ELPs) ainsi que sur l'étude de leurs propriétés physicochimiques et biologiques. Des ELPs contenant des résidus méthionine ont été modifiés de manière chimiosélective soit en utilisant des halogénures d'alkyle ou différents époxydes, soit par oxydation des résidus méthionine. La caractérisation par RMN et par spectrométrie de masse des composés obtenus a permis de confirmer leur fonctionnalisation quantitative. L'étude de la réponse en température de ces dérivés d'ELP par des mesures de turbidité ou par des mesures de diffusion de la lumière a montré le fort impact des modifications entreprises sur la température de transition (TI) des ELPs. Il a également été montré que la n peut être modifiée par échange des contre-ions des dérivés cationiques. Enfin, des monosaccharides ont été conjugué aux ELPs contenant des groupements alcyne par cycloaddition de Huisg en afin d'obtenir des glycopolypeptides. Les propriétés thermosensibles ainsi que les propriétés biologiques de ces conjugués ont été testées et ces dernières ont permis de montrer leur capacité à se lier sélectivement à des lectines. Leur utilisation pour trier des protéines d'intérêt et les redisperser est finalement évaluée de façon préliminaire
Dispersions aqueuses de polyuréthanes bio-sourcés sans isocyanates by Estelle Rix( )

1 edition published in 2015 in French and held by 1 WorldCat member library worldwide

Polyurethanes are a major polymer family; they are industrially obtained from phosgene derivatives: isocyanates. In order to avoid the use of such toxic compounds and to promote the use of biomass, this thesis investigates the synthesis of aqueous dispersions of nonisocyanate polyurethanes derived from vegetable oils. Two synthesis pathways have been studied; transurethanization and aminolysis of cyclic carbonates. Bis-carbamates and biscyclic carbonates were synthesized from fatty acids, and their polymerizations with diols or diamines were studied in bulk. The two routes allow the production of polyurethanes in a few hours at 20-130°C. Sodium methoxide is used as catalyst for transurethanization reactions while the other synthesis pathway does not require catalysts to proceed. Polyurethanes obtained have molar mass (Mn) around 5-17kg.mol-1, which is in accordance with the literature. The polymerization in aqueous miniemulsion was then investigated for the synthesis of polyurethane by aminolysis of cyclic carbonates. Many formulation experiments were necessary to achieve stable miniemulsion and latex; aqueous dispersions of bio-based non-isocyanate polyurethanes were then obtained
Démontabilité des assemblages structuraux by Maxime Olive( )

1 edition published in 2008 in French and held by 1 WorldCat member library worldwide

The INDAR process (INnovative Disassembling Adhesives Research), patented by RESCOLL, is a technological answer for the dismantling on command of structural bonded joints (easier recycling and maintenance). This process is based on the reformulation of primers or adhesives with specific chemical compounds. The works carried out enabled a better understanding of the debonding mechanism, in order to extend it to other configurations of adhesives and activation conditions (different temperature, heating method). The results obtained broadened the scope of possible applications for this technology (aeronautics, defence, automotive) and confirmed the strategical interest ot this topic
Vegetable oils as a platform for the design of sustainable and non-isocyanate thermoplastic polyurethanes. by Lise Maisonneuve( )

1 edition published in 2013 in English and held by 1 WorldCat member library worldwide

This thesis aims to synthesize more sustainable thermoplastic polyurethanes from vegetable oil derivatives. The first route that has been investigated is based on the well-known reaction between a diol and a diisocyanate. Then to avoid the use of diisocyanates, the route via the polyaddition of a bis cyclic carbonate and a diamine have been studied as well. For this purpose, bifunctional precursors such as diols, bis 5- and 6-membered cyclic carbonates and diamines have been prepared from sunflower oil derivative (methyl oleate) and castor oil derivatives (methyl undecenoate and sebacic acid) The thermo-mechanical properties of the PUs have been modulated by designing and selecting the chemical structure of the (fatty acid-based) monomers. The performed model reaction kinetics revealed the higher reactivity of the 6-membered cyclic carbonates compare to the 5-membered ones. Finally, the developed route to fatty acid-based diamines via dinitriles synthesis in mild conditions was really efficient and this route is really promising to develop a fatty acid based-diamines platform and fully bio-based poly(hydroxyurethane)s
Synthèse de polyuréthanes par organo-catalyse dans le dioxyde de carbone supercritique by Christopher Smith( )

1 edition published in 2012 in French and held by 1 WorldCat member library worldwide

The organocatalysed synthesis of polyurethane particles in supercritical carbon dioxide has been studied. Model reactions were first carried out in supercritical CO2 and monitored by in situ infrared spectroscopy in order to indentify the most efficient catalysts for the urethanisation reaction. A series of CO2-philic silicone polymers, end-functionalised with the organocatalytic group (organocatasurfs), were then synthesised and tested in supercritical CO2 for the dispersion polymerisation of polyurethane
Valorisation des xylanes du bois : vers la synthèse de copolymères amphiphiles bio-sourcés by Maud Chemin( )

1 edition published in 2014 in French and held by 1 WorldCat member library worldwide

This thesis work aims to add value to xylans by designing new bio-based amphiphilic polymers.Beechwood xylans were first fully characterized before their acidic hydrolysis. The hydrolysis conditions were optimized in order to obtain well-defined xylooligosaccharides, oligomeric chains of about six xylose units that have only one methylglucuronic acid unit positioned at the non-reductive chain end. Periodate oxidation of xylans was also studied in order to form new aldehyde groups within the xylan backbone in a controlled manner. The xylooligomers were then functionalized from their reductive end with an azide or an allyl group, providing the ability to couple these oligomers to fatty acid derivatives using 'click chemistry'.The obtained amphiphilic oligomers were finally studied according to their surfactant and self-assembly properties. Their wetting properties were found to be very good, comparable to those found with Tween®80. Moreover, they self-assembled in both chloroform and water, where their structures were characterized via DLS and TEM. The resulting particles formed had a spherical micellar morphology, with a d ≤ 50 nm. However, it was found that the particles had a tendency to form large aggregates, particularly in chloroform. The aggregates could be easily removed, either by filtration or by dilution of the sample, as the forces that govern the aggregation are low enough to allow dissociation with increasing solvent volume.As previously mentioned, this thesis work led to the synthesis of bio-based amphiphilic oligomers starting from xylans, which are a potential byproduct in the paper/pulp industry. Thanks to their surfactant properties, numerous applications can be found for such a 'green' surfactant. Their biocompatibility added with their self-assembly nature in aqueous media makes them an attractive molecule for active substance delivery applications
Engineering of Thermoresponsive Diblock Elastin-like Polypeptides by Evangelos Georgilis( )

1 edition published in 2019 in English and held by 1 WorldCat member library worldwide

The present work focuses on the engineering of diblock elastin-like polypeptides (ELPs) that thermally assemble into nanostructures after the application of chemical modifications. The strategy involved the development of diblock ELPs composed of a hydrophobic isoleucine-containing block fused at its N-terminal end to a block containing residues amenable to chemoselective modifications, namely methionine. This particular residue was employed because the orthogonal modification of its thioether group allows for the change of the hydrophilic/lipophilic balance of the diblock ELP and the possible simultaneous grafting of functional ligands. A first generation of diblock ELPs was therefore designed by means of molecular clonings, produced in E. coli, and characterized by chemical methods to further monitor post-modifications. The chemical modifications were applied at the C-terminal cysteine to control the system monodispersity and introduce fluorescent probes, and also at methionine in order to change the hydrophilic/lipophilic balance and introduce reactive groups. The self-assembly of the non-modified and post-modified ELPs was monitored by means of turbidimetry, nanoparticle tracking analysis and dynamic light scattering, which showed that these sequences possessed a transition from monomers to aggregates. To access nanoparticle formation, a second generation of diblock ELPs was developed, the design of which was based on theoretical modeling. The second generation diblocks self-assembled into nanoparticles by means of methionine post-modifications. It is expected that these sequences will contribute to the development of diblock ELP-based nano-formulations
Élaboration de nouveaux revêtements de contrôle thermique pour applications spatiales by Hélèna Cheminet( )

1 edition published in 2011 in French and held by 1 WorldCat member library worldwide

This work presents the formulation and the study of polysiloxane resins and hybrid sol-gel materials to develop new protective coatings resistant to space environment. Spacecraft thermal control and polymer protection towards atomic oxygen are required in Low Earth Orbit applications. Besides the stability in the space environment and the process requirements, the coatings have to exhibit innovative properties (such as a low curing temperature) and be composed of raw materials with easy supply in order to avoid any risk of obsolescence
Design of Waterborne Isocyanate-free Poly(Hydroxy Urethane)s - Poly(Butyl Methacrylate) Hybrids via Miniemulsion and Properties of the Cast Films by Boris Bizet( )

1 edition published in 2020 in English and held by 1 WorldCat member library worldwide

The objective of this thesis consists in the development of waterborne hybrid polymers composed of vegetable oil-based poly(hydroxy urethane) - PHU - and poly(butyl methacrylate) - polyBMA. To do so, the design of fatty-acid based bis-cyclic carbonates, as well as their behavior in the bulk polymerization with fatty-acid based diamines was firstly studied. The bis-cyclic carbonate structure was found to influence the microstructure of the formed poly(hydroxy urethane)s as well as the properties of the resulting poly(hydroxy urethane)s. Secondly, the design of waterborne PHU-PolyBMA polymer-polymer hybrids was performed using a miniemulsion process. Both non-crosslinked and crosslinked formulations were developed and compared with respect to kinetics, particle morphology, film formation ability and film morphology. On the one hand, in the case of non-crosslinked hybrids, the ratio between the PHU and the acrylic phase was found to have a strong impact onto the film casting ability as well as the extent of phase segregation. On the other hand, the influence of grafting was analyzed and it was shown to be a potential solution towards the formation of more homogeneous films, exhibiting tunable mechanical properties
Synthesis and functionalization of fatty acid-based hyperbranched polymers by Quentin Passet( )

1 edition published in 2019 in French and held by 1 WorldCat member library worldwide

The aim of this thesis is to valorize oilseed biomass through the polymerization of building block, stemming from vegetable oils, into hyperbranched polymers. This research involves the synthesis and purification of a new bio-based monomer, coined as 10,11- epoxyundecanol (EUnd), which ring-opening multibranching polymerization (ROMBP) has generated bio-based hyperbranched polyethers (hbPEUnd). Conditions of polymerization have been studied in order to maximize yields of reaction and control both the chemical structure and the properties of hbPEUnd. Copolymerization of EUnd with glycidol has also been implemented, yielding hyperbranched copolyethers with varied properties (e.g. solubility). The second part of this work has been dedicated to the functionalization of bio-based hyperbranched polyesters, developed in the frame of a former project. Appropriate derivatizations have provided these modified polyesters with solubility in polar solvents and made them employable as curing agents
Synthesis of magnetic and thermosensitive iron oxide based nanoparticles for biomedical applications by Gauvin Hemery( )

1 edition published in 2017 in English and held by 1 WorldCat member library worldwide

This thesis reports the development of hybrid nanoparticles made of an inorganic iron oxide core and an organic shell for medical applications. Iron oxide nanoparticles (IONPs) were produced by the polyol pathway, leading to a good control over their crystallinity and morphology (monocore or multicore). IONPs with diameters in the range of 4 to 37 nm were produced. Their properties as MRI contrast agents were assessed and compared, for possible theranostic applications. They can be used for treating cancer by magnetic hyperthermia, and as contrast agents for MR imaging. The surface of the IONPs was modified to bring stability in biological conditions, as well as new functionalities. Poly(ethylene glycol) was grafted for its stealth property, poly(2-dimethylaminoethyl methacrylate) (PDMAEMA) and elastin-like polypeptides (ELPs) for their thermosensitive capabilities, and a DY700 fluorescent probe was grafted for tracking nanoparticles in vitro and in vivo. The magnetic and thermosensitive properties of the nanoparticles were studied using a unique set-up combining magnetic hyperthermia with dynamic-light scattering. This set-up allowed measuring the elevations of temperature of the samples as well as variations in diameter and backscattered intensity. Monocore and multicore IONPs grafted with PEG, and monore IONPs grafted with a diblock ELP were tested in vitro. Their interactions with glioblastoma cells were studied, from the internalization pathway inside the cells to their cytotoxic effect (up to 90 %) under magnetic hyperthermia. In vivo, nanoparticles intravenously injected in mice accumulated in the tumors. Intratumoral administration followed by magnetic hyperthermia treatment led to elevations of temperature of up to 10 °C, with a significant effect on the tumor activity
Caractérisation et impact des différentes fractions d'une biomasse lignocellulosique pour améliorer les prétraitements favorisant sa méthanisation : utilisation de la paille de blé comme biomasse lignocellulosique d'étude by Vincent Nordmann( )

1 edition published in 2013 in French and held by 1 WorldCat member library worldwide

Methanization or anaerobic digestion is a biological process to transform organicmatter into a gas mixture composed by a majority of methane and carbon dioxide. Thistechnology is developing rapidly for the production of biomethane as renewable energysource. However this biotechnological route has low performances when lignocellulosicbiomass is used as raw material.Wheat straw has been chosen as typical biomass and the role of each lignocellulosicfraction (extractives, cellulose, hemicelluloses and lignin) has been determined on theperformance of anaerobic digestion. A synthetic biomass has been built with different pureconstituents of the wheat straw to assess the impact of holocellulose-lignin interactions onmethanization. Then methane potential of various lignin degradation products (phenolicmolecules) has been studied. Majority of them have been shown an inhibitory effect butthree of them have been converted to methane: ferulic and vanillic acids andsyringaldehyde.Various physical pretreatments (heating, microwave irradiation, sonication andrefining) and chemical pretreatments (sodium hydroxide, ammonia and ozone) have beenselected to prepare the biomass to anaerobic digestion and their impacts on wheat strawcomposition have been evaluated. The best methanization yield has been obtained afterpretreatments by sodium hydroxide heating by microwave irradiation
Différence de couleur entre duramen et aubier du bois de Pin maritime : identification moléculaire, homogénéisation et évolution by Jérémy Mehats( )

1 edition published in 2020 in French and held by 1 WorldCat member library worldwide

Maritime pine is one of the most common softwood found in South West of France, covering more than 10% of the total forestry area of the country. With the development of the petroleum-based chemistry, maritime pine has been mostly used for its wood that possesses some good mechanical properties, for the elaboration of materials for packaging purposes (ex: wood pallet) or engineered wood products for structural applications. Nevertheless, due to consumers' feedbacks and to requirements specifications, the industries identified a major issue: the color difference between heartwood and sapwood.Heartwood is known to have a brown reddish color contrary to sapwood, which have a pale yellow tint. This coloration difference results in a depreciation of the commercial value of the finished material. Thus, industrials are looking for treatments to homogenize the color and to valorize all their productsThe purpose of this PhD is firstly to identify the chromophores that are responsible of this color differences between the two wood structures and then to develop an homogenisation treatment based on the paper industry processes, particularly using alkaline hydrogen peroxide chemistry
Design de polymères conjugués pour des applications dans le photovoltaïque assisté par modélisation moléculaire by Alexis Fradon( )

1 edition published in 2016 in French and held by 1 WorldCat member library worldwide

During the last decade, a new kind of donor polymers for photovoltaic application have been intensively studied, the low band-gap polymers. They are based on repeating units associating two different moieties, one electron-rich (ER) and one electron-poor (EP), which allow to finely tune the molecular orbitals and to induce a delocalization of the exciton generated upon the photo-excitation process. A large variety of devices are based on such low band-gap polymers, with a power conversion efficiency record around 10%, and, to increase the efficiency, it is necessary to have a better understanding of these polymers during the photo-absorption phenomenon. Computational chemistry isa powerful tool that permits to predict different opto-electronic properties. For this work, we used Density Functional Theory and Time-Dependent Density Functional Theory to compute the optical properties of increasingly large oligomers involving various ER and EP subunits. The optical properties in the polymer limit were then estimated for the different systems by using an extrapolation scheme based on the Kuhn equation. This theoretical screening allowed us to select promising candidates based on benzodithiophene, benzothiadiazole and benzofurazan for syntheses, which were performed by a Stille coupling. The obtained polymers and size-controlled oligomers were further characterized by UV visible spectroscopy, fluorescence, size exclusion chromatography and NMR, in order to extractstructure-properties relationships and correlate experimental results to theoretical data
Chitosan polymers and plant extracts to develop biofungicides by Anne Loron( )

1 edition published in 2021 in French and held by 1 WorldCat member library worldwide

Les cultures céréalières sont sujettes aux invasions de champignons pathogènes, ce qui altère la qualité des grains et pose un problème de santé publique, en raison de mycotoxines potentiellement contenues dans ces grains. Face à la prise de conscience publique et politique de la nécessité d'inclure la composante environnementale dans nos modes de consommation et de production, les fongicides synthétiques traditionnels se voient petit à petit remplacés par des alternatives plus « vertes ». Dans ce contexte, ce travail de thèse a pour but de créer une formulation à base de produits renouvelables, pour contrôler le développement et la production de toxines d'espèces fongiques pathogènes. Ce travail exploite les propriétés remarquables de trois composés : le biopolymère de chitosane, dérivé de la chitine, la tétrahydrocurcumine (THC), un dérivé de curcumine, et des extraits de pins et de vigne. Les propriétés physico-chimiques des chitosanes ont tout d'abord été caractérisées. Ces solutions de chitosanes présentent des effets antifongiques prometteurs réduisant la croissance mycélienne du champignon modèle cible Fusarium graminearum et divisant sa production de mycotoxines de plus moitié. Un des principaux atouts de ce biopolymère réside dans le fait qu'il conserve ses propriétés antifongiques sous forme d'enduction. Des extraits végétaux possédant des activités antimicrobiennes ont ensuite été étudiés. Premièrement, la THC inhibe la production de toxines et est donc combinée avec du chitosane. Afin d'accroître la solubilité dans l'eau et l'efficacité de la THC, des complexes d'inclusion ont été formés avec des cyclodextrines. De même, cette THC a été encapsulée dans d'autres matrices de biopolymères variés, tels que l'amidon ou le chitosane. Deuxièmement, les extraits issus de ressources locales de pins maritimes et de vignes démontrent eux aussi des effets antifongiques et anti-mycotoxigéniques. En particulier, l'addition d'un de ces extraits, celui d'écorce de pin maritime, à une formulation de chitosane double l'efficacité de ce dernier contre le développement du mycélium
Nanoparticules polymères ciblant le récepteur CXCR3 : élaboration et évaluation sur modèles de tumeur by Laura Rodrigues( )

1 edition published in 2018 in French and held by 1 WorldCat member library worldwide

This thesis deals with the elaboration of polymeric nanoparticles functionalized by the ligand SCH546738 to target the CXCR3 receptor overexpressed in human healthy or tumoral cells. Poly(trimethylene carbonate-b-Poly(ethylene glycol) (PTMC-b-PEG) blocks copolymers and PTMC-b-PEG-SCH546738 synthesis, then their self-assembly with different ratios in water, and finally biological activity in vitro of these different nanoparticles were studied. A serie of PTMC-b-PEG with different hydrophilic mass fractions f (between 34 and 6%) were obtained by ring opening polymerization (ROP) of trimethylene carbonate (TMC) initiated by a block PEG (MW: 2000 g/mol). Self-assembly studies showed that the hydrophilic mass fraction was related to the morphology of the nano objects (micelles and vesicles) and that size and morphology of nano objects can be changed by the self-assembly protocol. PTMC-b-PEG-SCH546738 were obtained by the convergent coupling between PEG-SCH546738 and PTMC block. The co self-assembly of functionalized and not functionalized copolymers was done by nanoprecipitation controlled by a microfluidic system that allows monodisperse polymersomes with controlled size to be produced. The molar percentage of SCH546738 at the surface of polymersomes was fixed at 5, 10 and 20 %, and with the control nanoparticle, these samples were tested in vitro on HEK 293 and U87 cells overexpressing the CXCR3-A. The influence of the ligand and its percentage on nanoparticles internalization and signaling pathways blocking on cells were analyzed
Fatty acids as a source of original aliphatic polycarbonate materials by Pierre-Luc Durand( )

1 edition published in 2017 in English and held by 1 WorldCat member library worldwide

Fatty acids were derivatized with the objective to design bio-based aliphatic polycarbonate(APC) materials. To that purpose, two platforms of lipidic 6-membered cyclic carbonates were prepared following synthetic routes either involving the ring-closure of a malonate intermediate or the coupling reaction between a fatty acid and 2-amino-1,3-propanediol. The ring-openingpolymerization (ROP) of these cyclic carbonates was next investigated. The first platform of 6CCswas polymerized in the presence of Sn(Oct)2 as catalyst, yielding low Tg aliphatic polycarbonates ranging from -61°C to -26°C with respect to the size of the pendant aliphatic side chains. The polymerization of the second lipidic 6CC platform was performed in a controlled fashion using DBU/Schreiner thiourea as catalytic system. Taking advantage of the presence of unsaturation functions on the linear bio-based APCs, cross-linked polycarbonate materials were then prepared.Several cross-linking methods were tested such as the irreversible thiol-ene coupling, the thermoreversible Diels-Alder reaction and the photo-reversible [2+2] cyclo-addition reaction between two cinnamate moieties. Fatty acid-based cross-linked APCs were thus designed and characterized; the latter exhibit tunable physico-chemical properties as a function of the monomer structure and the cross-linking density
 
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Laboratoire de Chimie des Polymères Organiques facility in Pessac, France

LCPO

UMR 5629

Languages
French (13)

English (8)