A5071763037- Nanocomposite Films for Food Packaging
- Polymer Surface Interaction Studies
- Studies on Chitinases and Chitosanases
- RNA Interference and Gene Delivery
- Hydrogels: synthesis, properties, applications
- Polymer crystallization and properties
- Nanoparticle-Based Drug Delivery
- Advanced biosensing and bioanalysis techniques
- Electrospun Nanofibers in Biomedical Applications
- Tissue Engineering and Regenerative Medicine
- Proteins in Food Systems
- Asphalt Pavement Performance Evaluation
- Ionic liquids properties and applications
- Escherichia coli research studies
- Advanced Cellulose Research Studies
- Catalysis for Biomass Conversion
- Enzyme-mediated dye degradation
- Analytical Chemistry and Sensors
- Supramolecular Chemistry and Complexes
- Wound Healing and Treatments
- Additive Manufacturing and 3D Printing Technologies
- Polymer composites and self-healing
- Antimicrobial agents and applications
- Chemical Synthesis and Analysis
- Polymer Science and PVC
Centre National de la Recherche Scientifique
2005-2025
Institut National des Sciences Appliquées de Lyon
2015-2025
Université Claude Bernard Lyon 1
2013-2025
Université Jean Monnet
2024-2025
Ingenierie des Materiaux polymeres
2006-2023
Forum Réfugiés - Cosi
2017
Université de Lyon
2015
The reversible addition–fragmentation chain transfer (RAFT) polymerization of acrylic acid (AA) in water was studied detail at different pHs using 4-cyano-4-thiothiopropylsulfanyl pentanoic (CTPPA) as a control agent and 4,4′-azobis(4-cyanopentanoic acid) (ACPA) an initiator. Well-defined hydrophilic macromolecular RAFT agents (PAA-CTPPA) were obtained further used directly for the styrene. corresponding polymerization-induced self-assembly (PISA) process evaluated it shown that working...
n-Heptyl α-d-mannose (HM) is a nanomolar antagonist of FimH, virulence factor E. coli. Herein we report on the construction multivalent HM-based glycopolymers as potent antiadhesives type 1 piliated We investigate glycopolymer/FimH and glycopolymer/bacteria interactions show that efficiently inhibit bacterial adhesion disrupt established cell-bacteria in vitro at very low concentration (0.1 μM mannose unit basis). On valency-corrected basis, are, respectively, 10(2) 10(6) times more than HM...
The controlled complex coacervation of oppositely charged hyaluronic acid (Mw ≈ 800-1000 kg mol-1) and chitosan 160 mol-1, degree acetylation = 15%) led to hydrogels with controllable properties in terms elasticity strength. In this work, we performed desalting by dialysis high ionic strength solutions mixed polyelectrolytes showed that the control pH during polyelectrolyte assembly greatly impacts mechanical hydrogel. First, for pHs from 5.5 7.5, a slight was observed due low protonation...
Abstract The hydrolysis of dihydrazides was studied at different pH values in water 25 °C. resulting species were analyzed by HPLC, 1 H‐NMR, and MALDI‐TOF mass spectrometry. Among these species, unexpected molecules bearing carboxylate moieties detected. Based on this analysis, a 2‐step mechanism proposed involving the formation cyclic linear intermediates before addition molecule to lead moieties. first step shown be rate‐determining catalyzed acidic conditions. To best our knowledge, study...
ABSTRACT In this study, a polyethylene grade used for applications in the insulation of energy cables was crosslinked by peroxide crosslinking route. The impact dicumyl (DCP) on polymer microstructure studied. different byproducts formed during reaction [acetophenone, α‐cumyl alcohol, and α‐methyl styrene (aMS)] were identified quantified. Another molecule, 2,4‐diphenyl‐4‐methyl‐1‐pentene, regarded as an aMS dimer, detected first time. Some amounts residual DCP also detected. A detailed...
A self‐assembled glycol chitosan nanogel (GC) is synthesized by chemically grafting hydrophobic chains onto a polysaccharide, which comprehensively characterized. The obtained macromolecular micelle decorated with folate‐conjugated poly(ethylene glycol) (PEG) (GCFA). An average size distribution of 250 and 200 nm observed, respectively for the GC GCFA nanogels. Differential cell localization observed on incubating materials HeLa cells. Whereas detected surface, localized in cytoplasm....
Three different types of biomass sourced from forestry waste (eucalyptus residues), agricultural (wheat straw), and energy crop (miscanthus) were used as starting materials to produce hemicellulosic sugars, furans (furfural hydroxymethylfurfural), oligosaccharides. A two-step hybrid process was implemented; first autohydrolysed without any additive extract hemicelluloses dissolve it in water. Then, the hydrolysate treated with a solid acid catalyst, TiO2-WOx, order achieve hydrolysis...
The nitrous acid depolymerization of chitosan enables the synthesis singular oligosaccharides (COS) since their reducing-end unit is composed 2,5-anhydro-d-mannofuranose (amf). In present study, we describe a chemical method for conjugation COS-amf by commercially available dioxyamine O,O′-1,3-propanediylbishydroxylamine in high mass yields. structure resulting dioxyamine-linked synthesized both oximation and reductive amination ways were fully characterized 1H- 13C-NMR spectroscopies...
Dendrigraft poly( l ‐lysine) (DGL) polyelectrolytes, obtained by iterative polycondensation of N ‐trifluoroacetyl‐ ‐lysine‐ ‐carboxyanhydride, constitute very promising candidates in many biomedical applications. In order to get a better understanding their structure–property relationships these applications, absolute average molecular weights have be accurately measured. Size‐exclusion chromatography coupled multi‐angle laser‐light‐scattering detector (SEC‐MALLS) is known the most...
Blends of a copolyether–ester thermoplastic with different multifunctional (mono, di, and tri) amine-terminated polyethers have been carried out by reactive extrusion. The reaction polyetheramine Jeffamine T-403 allows one to reduce drastically the viscosity blends while at same time improving Young's modulus matrix up 30% keeping elongation break around 700% stress 20 MPa. mechanism structures deeply scrutinized NMR (in particular 2D DOSY), chromatography, mass spectrometry evidenced in...
Nucleic acid delivery requires vectorization for protection from nucleases, preventing clearance by the reticuloendothelial system, and targeting to allow cellular uptake. Nanovectors meeting above specifications should be safe patient, simple manufacture, display long-term stability. Our nanovectors were obtained via green process of polyelectrolyte complexation, carried out at 25 °C in water a low shear rate using chitosan (a polycationic biocompatible polysaccharide specific molar mass...
Abstract The scaling of the polyelectrolyte scattering peak in chitosan solutions, as deduced from relation q max ∼ c p α was studied by synchrotron SAXS a function charge density polymer. We observe variation exponent corresponding to limit ionic condensation, varying degree acetylation nature solution medium also affects peak, and it is shown that alcoholic/water mixtures, lower dissociation acid induces density, thus influencing ordering.
Macromol. Biosci. 2013, 13, 1369–1378 DOI: 10.1002/mabi.201300123 We regret that Figure 7 of this manuscript was published as a duplicate 6. The correct is provided here: