A5053409896- Advanced Cellulose Research Studies
- Natural Fiber Reinforced Composites
- Material Properties and Processing
- biodegradable polymer synthesis and properties
- Lignin and Wood Chemistry
- Surface Modification and Superhydrophobicity
- Electromagnetic wave absorption materials
- Click Chemistry and Applications
- Flame retardant materials and properties
- Recycling and Waste Management Techniques
- Biofuel production and bioconversion
- Fiber-reinforced polymer composites
- Monoclonal and Polyclonal Antibodies Research
- Electrospun Nanofibers in Biomedical Applications
- Supercapacitor Materials and Fabrication
- Adsorption and biosorption for pollutant removal
- Mechanical Behavior of Composites
- Dielectric materials and actuators
- Telemedicine and Telehealth Implementation
- Glycosylation and Glycoproteins Research
- Nanocomposite Films for Food Packaging
- Carbohydrate Chemistry and Synthesis
- Biopolymer Synthesis and Applications
- Enzyme Production and Characterization
- Enzyme Catalysis and Immobilization
Université du Québec à Trois-Rivières
2016-2025
McGill University Health Centre
2023-2024
Université Laval
2011-2023
Institut Universitaire de Cardiologie et de Pneumologie de Québec
2023
Innovation and Economic Development Trois Rivières
2021
Centre des Matériaux
2015-2016
Materials Research Center
2015
Université de Limoges
2011
Nanjing Forestry University
2008-2009
Sodium alginate from Moroccan Laminaria digitata brown seaweed were extracted under different conditions. The extraction yield was affected by the temperature and samples’ size. Alginates purified re-precipitation with ethanol characterized 1H NMR, fluorescence spectroscopy infrared spectroscopy, in order to determine their structural physicochemical properties. Viscosimetric measurements gave an intrinsic viscosity of 2.542 dL/g which permits calculate average molar mass value (1.14 × 105...
The introduction of phosphate groups into cellulosic fibers allows for the tuning their fire resistance, chelating and metal-adhesion properties, enabling development flame-retardant adhesive adsorbent materials. Toward that end, major challenge is developing a novel efficient environmentally friendly phosphorylation route offers an alternative to existing methods, which can achieve targeted properties. For this purpose, were chemically modified herein using solid-state with phosphoric acid...
Polysaccharides are complex but essential compounds utilized in many areas such as biomaterials, drug delivery, cosmetics, food chemistry or renewable energy. Modifications and functionalizations of polymers often necessary to achieve molecular structures interest. In this area, the emergence “click” concept, particularly copper-catalyzed version Huisgen 1,3-dipolar cycloaddition reaction between terminal acetylenes azides, had an impact on polysaccharides chemistry. The present review...
Abstract Cyclodextrins are important building blocks in organic chemistry. This review deals with the role of click chemistry this family cyclic oligosaccharides, focusing on different areas chemistry, including chromatography, biological applications, elaboration superstructures, and metal detection, that benefit from reaction. In paper, attention is given to modifications by using functionalizations such as azidation propargylation grafting onto two faces cyclodextrins. Research papers...
In this work, phosphorylated cellulosic fibers were functionalized with an aminosilane ((3-aminopropyl)triethoxysilane, APTES) using a simple and economical method. Several characterization performed to determine the types of bonds between grafted APTES. The thermal behavior, hydrophobicity surface charge variation as function pH multifunctional cellulose determined. Results demonstrate that APTES should proceed through Si-O-C, possibly Si-O-P, covalent although dimerization silane Si-O-Si...
The Cu(i)-catalyzed Huisgen cycloaddition click chemistry reaction is of particular interest in the production paper sheets or natural fiber composites since it leads to formation chemically stable bonds between two fibers. This study focuses on modification kraft pulp We based our approach prior research that treated fibers using chemistry, including propargylation and tosylation reactions. Our focus was enhancing these treatments achieve better final sheet properties. After azidation...
p-Toluenesulfonyl cellulose was prepared by reacting in aqueous medium, instead of via traditional routes, which involve the use DMAc/LiCl, or more recently, ionic liquids. The influence several parameters on reaction efficiency has been studied; amount tosylchloride, presence triethylamine, time and sodium hydroxide chloride. resulting p-toluenesulfonyl samples were characterized means FTIR NMR spectroscopy. effects solvent crystalline change during tosylation investigated X-ray diffraction...
The mechanical characteristics of natural fibre composites (NFCs) are closely linked to fibre-matrix and fibre-fibre interactions. This work investigates the improvement tensile properties a flax/epoxy composite through application click chemistry reaction unidirectional-mat (UDM) reinforcement with modifications made on short mat unidirectional flax phases reinforcement. surface fibres was fibrillated increase accessibility hydroxyl groups for all preliminary reactions final cross-linking,...
<sec> <title>BACKGROUND</title> False activation (FA) of cardiac catheterization laboratory (CCL) for ST-segment elevation myocardial infarction (STEMI) is common, adversely affects health care professionals, and results in a financial burden to healthcare systems. </sec> <title>OBJECTIVE</title> The current study assessed if FA minimization can be achieved through implementing dedicated cloud-based coordination platform. <title>METHODS</title> In September 2021, the McGill University Health...
The properties of phosphorylated kraft fibers, including their flame retardancy and behavior in water, such as electrical charge swelling capacity, were investigated this study. Two different phosphorus contents three forms fibers (ammonium, acid, sodium) analyzed. All types exhibited high char formation limiting oxygen index (LOI) values, indicating good retardancy. In particular, the ammonium form best highest LOI value. density capacity significantly increased by phosphorylation. Alkaline...
Abstract Contamination of water resources by toxic heavy metals has significant impacts on environmental and human health. Their removal from aqueous media is essential to ensure sustainability provide safe freshwater availability population. Electrospun chitosan (CS) nonwoven mats are efficient at removing media. However, they suffer low permeability low‐mechanical strength. They also unable remove contaminants in a nonselective way. A bilayer sorbent made porous phosphorylated cellulose...
The fabrication of paper or cardboards sheets with phosphorylated pulp fibers has proven to be a difficult task using traditional papermaking techniques. This problem is mainly attributed the very high anionic charge fibers. In present work, we propose use cationic polymers as neutralizing agent attenuate detrimental effect and promote formation microflocs that can agglomerated into uniform sheet sufficient strength. results obtained show positively charged retention agents significantly...
The kinetics and reuse of spent liquor in the TEMPO-mediated oxidation mechanical pulp have been studied. It was found that reaction by 2,2,6,6-tetramethyl piperidine-1-oxyl radical (TEMPO)−NaBr−NaOCl system can be approximately described first-order with respect to TEMPO NaBr. In concentration range used, rate constant k is directly proportional NaBr, whereas NaOCl determines end conversion primary alcohol groups on into carboxylic acid groups. also recycled reused reinforced addition...