A5083796789- biodegradable polymer synthesis and properties
- Polymer crystallization and properties
- Polymer Nanocomposites and Properties
- Advanced Polymer Synthesis and Characterization
- Additive Manufacturing and 3D Printing Technologies
- Manufacturing Process and Optimization
- Rheology and Fluid Dynamics Studies
- Material Properties and Applications
- Natural Fiber Reinforced Composites
- Injection Molding Process and Properties
- Polymer composites and self-healing
- Spectroscopy and Chemometric Analyses
- Recycling and Waste Management Techniques
- Fiber-reinforced polymer composites
- Polymer Foaming and Composites
- Synthesis and properties of polymers
- Lignin and Wood Chemistry
- Process Optimization and Integration
- Advanced Theoretical and Applied Studies in Material Sciences and Geometry
- Innovative Microfluidic and Catalytic Techniques Innovation
- Spectroscopy Techniques in Biomedical and Chemical Research
- Material Properties and Processing
- Microplastics and Plastic Pollution
- Metallurgy and Material Forming
- Microfluidic and Capillary Electrophoresis Applications
Laboratoire Réactions et Génie des Procédés
2014-2025
Université de Lorraine
2016-2025
Centre National de la Recherche Scientifique
2016-2025
Universidade Federal de Pelotas
2019
Universidade Federal de São Carlos
2019
Supélec
2017
CentraleSupélec
2017
Laboratoire Matériaux Optiques, Photonique et Systèmes
2017
Laboratoire de Génie Chimique
1998-2010
Institut National Polytechnique de Lorraine
1995-2008
The understanding of lignin softening and pyrolysis is important for developing lignocellulosic biorefinery in order to produce carbon fibers, polymers additives, green aromatics, or biofuels. Protobind (produced by soda pulping a wheat straw) was characterized thermogravimetry, calorimetry (for glass transition temperature heat reactions), situ 1H NMR the analysis mobility protons upon thermal conversion), solution-state 13C 31P (determination functional groups lignin). In rheology reveals...
The compatibility issue between poly(lactic acid) (PLA) and tannin is a big challenge for preparing PLA/tannin biocomposites with enhanced properties. In this work, composites properties have been accomplished using an efficient one-step reactive extrusion method the help of methylene diphenyl diisocyanate (p-MDI) or 3-aminopropytriethoxysilane (APS). extent achieved via was evaluated by tensile, morphological, rheological, thermal obtained results indicated that adhesion promoters,...
Chemical Product Engineering (CPE) is marked by numerous challenges, such as the complexity of properties–structure–ingredients–process relationship different products and necessity to discover develop constantly quickly new molecules materials with tailor-made properties. In recent years, artificial intelligence (AI) machine learning (ML) methods have gained increasing attention due their performance in tackling particularly complex problems various areas, computer vision natural language...
We present an experimental investigation of the mechanical properties solid vitrimer samples obtained by incorporating a diepoxide into commercial poly(butylene terephthalate) (PBT) in presence Zn(II) catalyst using batch compounder and injection-molding machines. Tensile experiments were carried out at different temperatures (80, 120, 160 °C) below melting point (220 with various concentrations (0, 1, 2 wt %). found that plastic deformation mechanisms differ drastically from those PBT...
Abstract This work was aimed at studying the overall, partial, and local residence time distributions (RTD); partial revolution (RRD) volume (RVD) in a co‐rotating twin screw extruder, on one hand; establishing relationships among them, other hand. Emphasis placed effects of type geometry mixing elements (a gear block various types kneading differing staggering angle) process parameters RTD, RRD RVD. The overall RTD were directly measured in‐line during extrusion ones calculated by...
ABSTRACT This work aimed to evaluate the effects of processing parameters on properties dynamically revulcanized blends based 60 wt % devulcanized ground tire rubber (GTR) and 40 high density polyethylene (HDPE). Devulcanization GTR was carried out in a system comprised conventional microwave oven adapted with motorized stirring speed control. The resulting contained 26 soluble toluene. It processed HDPE twin screw extruder produce blend. Processing such as feeding mode were varied. Their...
Free radical polymerization of styrene was monitored in situ by combining Raman spectroscopy to other experimental techniques (gravimetry and rheology). Three different processes were investigated: bulk, emulsion miniemulsion polymerization. A complete analysis the evolution spectrum during course reaction showed that a lot information about molecular dynamics could be extracted related chemical phenomena. In addition, we report for first time coupling rheometer order monitor bulk both at...
Significance A concept called reactive compatibilizer‐tracer is proposed. The latter bears groups capable of reacting with its counterpart on forming a copolymer for in situ compatibilization, and fluorescent labels allowing determining very small amounts the formed compatibilizer formation micelles when it occurs. Owing to this concept, shown that may be efficient at beginning blending process suddenly become completely inefficient, resulting an abrupt drastic increase size dispersed phase...
Tannins were used as reinforcing components for polypropylene with anti-UV properties via dynamic curing extrusion. The influence of cross-linked tannins in different weight fraction and their capacity on morphological, mechanical, rheological, crystallize thermal studied. experimental results indicated that the improve Young's modulus, crystallinity, stability reinforce internal network polypropylene. After UV accelerated weathering, had fewer surface cracks, lower carbonyl index,...
Tannin and lignin were blended with polypropylene (PP) through dynamic vulcanization technique. Their influence of mechanical property, crystallinity, thermal stability, as well ultraviolet (UV) protection property on the PP matrix was investigated compared native tannin lignin. According to our experimental results, undergo more compatible matrix. Besides, vulcanized can perform nucleating agents because their relatively small particle size. Moreover, tannin/lignin have a better performance...
Abstract Polylactic acid (PLA) is a polymer that can replace several petroleum‐based polymers due to its properties and bio‐sourced nature. However, sustainable recycling processes of PLA avoiding the creation waste enabling it be used as raw material must implemented. Enzymatic hydrolysis seems promising way recycle PLA. The different approaches have led discovery new depolymerizing enzymes are reviewed here. Moreover, an overview various factors affecting enzymatic depolymerization been...
Abstract This study examines the limitations of classical analytical approximations Fick's second law diffusion and proposes a computational approach to determine coefficient ( D ) using entire process data. Traditional rely on short‐time data, potentially leading misinterpretations. The method, validated with experimental data liquid water in poly(lactic acid) oxygen poly(ethylene terephthalate), demonstrates higher accuracy broader applicability. challenges common assumption that...
This study aims to develop a concept of reactive compatibilizer-tracer, which allows one the evolution morphology and interfacial reaction polymer blends in large-scale twin-screw extruder (TSE). A compatibilizer-tracer is compatibilizer precursor whose chain bears groups capable reacting with at least components blend. It also moieties being analytically detected great accuracy. shown for polystyrene (PS)/polyamide 6 (PA6) using copolymer styrene (St), 3-isopropenyl-α,α′-dimethylbenzene...
Abstract The grafting of polyamide 6 (PA6) onto polystyrene (PS) can rely on the use a copolymer styrene (St) and 3‐isopropenyl‐α, α‐dimethylbenzene isocyanate (TMI), PS‐ co ‐TMI, to activate polymerization ε‐caprolactam (CL) in presence sodium (NaCL) as an anionic catalyst. This article is aimed at answering following key questions. First, do all moieties ‐TMI participate activation CL? Second, what are composition resulting polymer product structure graft copolymer? results show that had...