Guillaume Sudre

Guillaume Sudre
Claude Bernard University Lyon 1 | UCBL · Ingénierie des matériaux polymères

PhD

About

51
Publications
6,060
Reads
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710
Citations
Additional affiliations
December 2012 - present
Claude Bernard University Lyon 1
Position
  • Professor (Assistant)
March 2011 - November 2012
Lawrence Berkeley National Laboratory
Position
  • PostDoc Position
Description
  • Joint Center for Artificial Photosynthesis
October 2007 - January 2011
Sorbonne Université
Position
  • PhD Student
Description
  • Tunable Adhesion of Hydrogels
Education
October 2007 - January 2011
Sorbonne Université
Field of study
  • Polymer sciences
September 2006 - September 2007
Sorbonne Université
Field of study
  • Physics
September 2003 - September 2007

Publications

Publications (51)
Article
In situ coupled mechanical/electrical/WAXS/SAXS investigations on EPDM-based composite materials filled with carbon black (CB) have been performed under uniaxial tensile stretching. The time-resolved correlation between the electrical conductivity and the microstructural state of the composite reveals the mechanisms governing the structure/properti...
Article
Full-text available
The functionalization of surfaces using chitosan oligomers is of great interest for a wide range of applications in biomaterial and biomedical fields, as chitosan oligomers can provide various functional properties including biocompatibility, wetting, adhesion, and antibacterial activity. In this study, an innovative process for the regiospecific c...
Article
In-situ coupled mechanical/electrical investigations on TPU-based nanocomposite materials filled with carbon black have been carried-out under continuous and cyclic mechanical loading, with simultaneous measurements of stress, strain and electrical conductivity as function of the strain rate and amplitude. The impact of mechanical deformation and t...
Article
The electromagnetic interference shielding properties of polypropylene-based composite materials filled with two different types of metallic fillers (hybrid Ag-coated glass microfibers and Tin microparticles) have been investigated between 0.1 MHz and 18 GHz. Two different experimental techniques were employed: coaxial cell method and waveguide met...
Article
In-situ coupled mechanical/electrical investigations on EPDM-based composite materials prepared using CB fillers of different (low and high) structure and at different concentrations have been carried-out by cyclic and continuous loading, with simultaneous measurements of stress, strain and electrical conductivity. By investigations in dependence o...
Article
RAFT-made poly(ionic liquid) chains (PIL), poly(1-[2-acryloylethyl]-3-methylimidazolium bromide) (Poly [AEmim][Br]), have been mixed with a ionic liquid (IL), namely butylmethylimidazolium chloride ([C4mim][Cl].) The similarities in terms of structure and polarity of these molecular and macromolecular imidazolium derivatives led to homogeneous and...
Article
Full-text available
In this work, thin transparent breathable films were prepared for food packaging applications. The films were obtained by the solvent casting method from both the binary blends Pebax® MH1657 copolymer/ hydroxyl-terminated polyethylene glycol (PEGOH) and Pebax® MH1657/polyethylene glycol dimethyl ether (PEGDME) as well as the ternary blend Pebax® MH...
Article
Full-text available
Soft tissues are commonly fiber-reinforced hydrogel composite structures, distinguishable from hard tissues by their low mineral and high water content. In this work, we proposed the development of 3D printed hydrogel constructs of the biopolymers chitosan (CHI) and cellulose nanofibers (CNFs), both without any chemical modification, which processi...
Article
We describe herein a straightforward methodology for designing all-poly(ionic liquid) block copolymers nanoparticles with various morphologies by aqueous RAFT polymerization-induced self-assembly relying on the use of a couple of isomeric...
Article
Full-text available
Multilayered polymer films are increasingly used in the daily life, but their macroscopic properties are always limited by the layer–layer interfacial compatibility. In this work, the influence of interface modification through in situ layer–layer interfacial reaction during a multilayered assembly is revealed from micro‐ to nanolayer films, based...
Article
This work brings together thermo-mechanical and structural information for plasticized cellulose acetate (CA) by lactates and octanoic acid. CA are processed with plasticizer due to their high Tg and their strong H-bonding network. We prepared CA / plasticizer blends by corotative twin screw extruder and by solvent casting methods. The study of the...
Article
Fe3O4nanoparticles coated with chito-oligosaccharides (COS) were prepared in-situ by a simple co-precipitation method through a mixing of iron ions (Fe3+and Fe2+) and COS aqueous solutions followed by precipitation with ammonia. The impact of COS with different degree of polymerization (DP 10, 24 and 45) and degree of N-acetylation (DA) ∽ 24 and 50...
Article
Full-text available
We investigate the adsorption of pH- or temperature-responsive polymer systems by ellipsometry and neutron reflectivity. To this end, temperature-responsive poly (N-isopropylacrylamide) (PNIPAM) brushes and pH-responsive poly (acrylic acid) (PAA) brushes have been prepared using the “grafting onto” method to investigate the adsorption process of po...
Article
This study describes biosourced binary materials that synergize the attributes of guar gum, a vegetal galactomannan, with the ones of deep eutectic solvents (DES). The preparation of a library of DES, stemming from the H-bonding complexation of renewable molecules such as choline chloride (ChCl) with urea, di or triacids, polyols, or carbohydrates...
Article
Full-text available
Single-cell microfluidics is a powerful method to study bacteria and determine their susceptibility to antibiotic treatment. Glass treatment by adhesive molecules is a potential solution to immobilize bacterial cells and perform microscopy, but traditional cationic polymers such as polylysine deeply affect bacterial physiology. In this work, we che...
Preprint
Full-text available
Single cell microfluidics is powerful to study bacteria and determine their susceptibility to antibiotics treatment. Glass treatment by adhesive molecules is a potential solution to immobilize bacterial cells and perform microscopy but traditional cationic polymers such as poly-lysine deeply affect bacterial physiology. In this work, we chemically...
Article
High‐density polyethylene (HDPE) and nanosilica nanocomposites were prepared for SiO2 content up to 15 wt%. Microstructural characterization evidenced a homogenous distribution of silica aggregates with a mean size increasing with the filler content finally resulting in a rheological percolation between 7.5 and 10 wt%. Nanoparticles did not induce...
Article
Polyamide-6 was modified by reactive extrusion using a triamine as a structuring agent. To scrutinize the reactive medium after the chemical modification and to characterize the new structures obtained, the coupling of several physico-chemical analyses was necessary and applied to either model molecules or polyamide chain. By correlation of liquid...
Article
Full-text available
The development of non-cellularized composites of chitosan (CHI) hydrogels, filled with cellulose nanofibers (CNFs) of the type nanofibrillated cellulose, was proposed for the repair and regeneration of the intervertebral disc (IVD) annulus fibrosus (AF) tissue. With the achievement of CNF-filled CHI hydrogels, biomaterial-based implants were desig...
Article
Porous collagen/chitosan scaffolds with different Collagen:Chitosan (Coll:Ch) ratios were prepared by freeze-drying followed by self-crosslinking via dehydrothermal treatment (DHT) and characterized as biomaterials for tissue engineering. Cy7 and Cy5.5 fluorochromes were covalently grafted to collagen and chitosan, respectively. Thus, it was possib...
Article
We report the fabrication and the use of a bioinspired synovial fluid acting as a lubricant fluid and anti-wear agent at soft and porous chitosan hydrogel tribopairs. This synthetic synovial fluid is composed of sodium hyaluronate (HA) and a bottle-brush polymer (BB) having a polycationic attachment group and polyzwitterionic pendant chains. 2.5 %w...
Article
PVA acetalization by 10-undecenal was carried out in aqueous medium in order to obtain PVA with acetalization degree (AD) ranging from 0.36 up to 1.85 mol%. PVA chain organization in 8 wt% aqueous solutions was investigated through Small Angle X-ray Scattering measurements. The significant modification of macromolecules organization evidenced at th...
Article
Full-text available
It is known that the macroscopic properties of multilayer polymer films are largely dominated by the diffuse interphase formed via interfacial diffusion between neighboring layers. However, not much is known about the origin of this effect. In this work, we reveal the role of interfacial diffusion and the diffuse interphase development in multilaye...
Article
Polymers exhibiting the bottlebrush (BB) architecture have excellent lubricating properties. However, in order to motivate their use in real life systems, they must also protect surfaces against frictional damage. In this article, we synthesized a library of polyzwiterrionic bottlebrush polymers of different architectures to explore the effect of i...
Article
We describe the fabrication of physical chitosan hydrogels exhibiting a layered structure. This bilayered structure, as shown by SEM and confocal microscopy, is composed of a thin dense superficial zone (SZ), covering a deeper zone (DZ) containing microchannels orientated perpendicularly to the SZ. We show that such structure favors diffusion of ma...
Article
Full-text available
We studied the microstructure of physical chitosan hydrogels formed by neutralization of chitosan aqueous solutions highlighting the structural gradients within thick gels (up to thicknesses of 16 mm). We explored a high polymer concentrations range (Cp ≥ 1.0 % w/w) with different molar mass of chitosan and different concentrations of the coagulati...
Article
Full-text available
The controlled complex coacervation of oppositely charged hyaluronic acid (M = 800–1000 kg/mol) and chitosan (M = 160 kg/mol, degree of acetylation = 15%) led to hydrogels with controllable properties in terms of elasticity and strength. In this work, we performed desalting by dialysis of high ionic strength solutions of mixed polyelectrolytes and...
Article
Ethyl-3-methylimidazolium triflate ionic liquid (IL) was incorporated in Pebax® MV 3000 copolymer through solvent cast (SC) or melt blending (MB) for composition from 0 to 30 wt % IL. The morphology was investigated by small angle neutron scattering, transmission electron microscopy, and differential scanning calorimetry. The SC copolymer film exhi...
Article
Formation of O/W surfactant-free microemulsions from water/oil/acetone ternary systems is exploited to construct precisely-defined shell-functionalized core-loaded nanocapsules with tunable diameters (ranging from 50 to 190 nm) in one step.
Article
Full-text available
The onset of the sintering of 5 nm ZrO2 and TiO2 nanoparticles is investigated by various methods including inelastic light scattering. A special attention is paid to low-frequency Raman spectra where scattering from confined acoustic vibrations and quasielastic scattering manifest. Significant changes are observed between samples sintered at diffe...
Article
The control over the crystallinity of chitosan and chitosan/ovalbumin films can be achieved via an appropriate balance of the hydrophilic/hydrophobic interactions during the film formation process, which then controls the release kinetics of ovalbumin. Chitosan films were prepared by solvent casting. The presence of the anhydrous allomorph can be v...
Article
In this study, we report on the simple and straightforward preparation of ionogels arising from the addition of guar gum (a plant-based polysaccharide) in a solution of precisely-defined poly(ionic liquid) chains (PIL) in imidazolium-based ionic liquid (IL). The development of intermolecular polar interactions (mainly hydrogen bonds) and topologic...
Article
Polyelectrolyte complexes (PECs) were prepared from Chitosan (CS) and Hyaluronic Acid (HYA) homogeneous mixtures of aqueous solutions. The method consisted of preparing a homogeneous mixture of the two polysaccharides via charge screening at high salt concentrations. Then, the mixture was dialyzed, leading to the controlled self-assembly of the two...
Article
Poly[(styrene)-block-((2-acryloxy)ethyltributylphosphonium bromide)] diblock copolymers (STBP) were synthesized in two steps. First, reversible addition–fragmentation chain transfer polymerization was used to synthesize the diblock copolymer precursors poly[(styrene)-block-(bromoethyl acrylate)] (SBEA), followed by functionalization with tributylph...
Article
We investigated the effect of specific interactions on the structure of interfaces between a brush and a hydrogel on the polymer chain length scale. We used a model system for which the interactions between the brush and the gel are switchable. We synthesized weak polyelectrolyte brushes of poly(acrylic acid) and hydrogels of polyacrylamide and pol...
Article
The swelling of poly(acrylic acid) brushes in aqueous solutions is studied by neutron reflectivity. The brushes are synthesized on silicon wafers using a “grafting onto” approach and their stretching is investigated at various pH, grafting densities, and chain lengths. Neutron reflectivity provides the average thickness and, more interestingly, the...
Conference Paper
Polystyrene-block-polychloromethylstyrene (PS-b-PCMS) copolymers, were synthesized by nitroxide-mediated controlled radical polymerization. Separate aliquots of the PS-b-PCMS samples were quarternized to transform the PCMS block. This resulted in block copolymers with ionizable blocks. We refer to ion-containing block copolymers synthesized from th...
Article
Anion-conducting membranes are important for several applications including fuel cells and artificial photosynthesis. In this study such membranes were made by quaternizing polystyrene-block-polychloromethylstyrene (PS-b-PCMS) copolymers. PS-b-PCMS copolymers with molecular weights ranging from 4 to 60 kg/mol were synthesized by nitroxide-mediated...
Article
We investigated the surface structure of hydrogels of poly(N,N-dimethylacrylamide) (PDMA) hydrogels synthesized and cross-linked simultaneously by redox free radical polymerization. We demonstrate the existence of a less cross-linked layer at the surface of the gel at least at two different length scales characterized by shear rheology and by neutr...
Article
Full-text available
We have developed a new experimental methodology to investigate the adhesive properties of hydrogels on solid surfaces under fully immersed conditions. The method, based on contact mechanics, provides time-resolved reproducible and quantitative data on the work of adhesion between a hydrogel at swelling equilibrium and a planar surface grafted with...
Article
A guideline for the synthesis of poly(acrylic acid) brushes on planar silica surfaces by the “grafting-onto” approach is described. It is demonstrated that some thermal precautions must be taken to obtain extended brushes. It is also shown that neutron reflectivity is well suited for the characterization of each step of the synthesis, while it is (...
Conference Paper
Anion-exchange membranes can be used in various applications such as direct methanol fuel cells or devices for artificial photosynthesis. Consequently, these membranes have to conduct the anions efficiently, remain insoluble in water or methanol, and be impermeable to various gases. Block copolymers are good candidates to reach these aims. Their ab...
Article
Full-text available
The formation of interpolymer complexes (IPC) between poly(acrylic acid) (PAA) and poly(acrylamide) (PAM), poly(N,N-dimethylacrylamide) (PDMA), and statistical copolymers of acrylamide (AM) and N,N-dimethylacrylamide (DMA) has been studied as a function of pH, salt concentration and temperature (0–70 °C). The cloud points of dilute solutions were m...
Thesis
Full-text available
The tunable adhesion of hydrogels on surfaces has systematically been studied by using specific and reversible polymer-polymer interactions. To this end, model surfaces of poly(acrylic acid) (PAA) brushes were obtained by "grafting to" and their structure, which is pH-sensitive, was characterized by neutron reflectivity. Meanwhile, neutral hydrogel...
Thesis
Full-text available
L'adhésion stimulable d'un hydrogel sur une surface a été étudiée de façon systématique par le jeu d'interactions spécifiques réversibles entre polymères. A cette fin, des surfaces modèles de brosses de poly(acide acrylique) (PAA) ont été obtenues par « grafting to » et leur structure, sensible au pH, a été caractérisée par réflectivité de neutrons...
Article
We study the wetting by water of complex "hydrophobic-hydrophilic" surfaces made of a hydrophobic substrate covered by a hydrophilic polymer brush. Polystyrene (PS) substrates covered with polystyrene- block-poly(acrylic acid) PS- b-PAA diblock copolymer layers were fabricated by Langmuir-Schaefer depositions and analyzed by atomic force microscopy...

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