A5048457637- Polymer Nanocomposites and Properties
- biodegradable polymer synthesis and properties
- Polymer composites and self-healing
- Polymer crystallization and properties
- Silicone and Siloxane Chemistry
- Polymer Foaming and Composites
- Carbon Nanotubes in Composites
- Fiber-reinforced polymer composites
- Flame retardant materials and properties
- Polymer Nanocomposite Synthesis and Irradiation
- Carbon dioxide utilization in catalysis
- Advanced Polymer Synthesis and Characterization
- Natural Fiber Reinforced Composites
- Conducting polymers and applications
- Synthesis and properties of polymers
- Phase Equilibria and Thermodynamics
- Electromagnetic wave absorption materials
- Material Properties and Applications
- Microplastics and Plastic Pollution
- Bone Tissue Engineering Materials
- Photochromic and Fluorescence Chemistry
- Tribology and Wear Analysis
- Graphene research and applications
- Polymer Surface Interaction Studies
- Mesoporous Materials and Catalysis
University of Liège
2009-2018
Centre Interuniversitaire de Recherche et d’Ingénierie des Matériaux
2016
Université Toulouse III - Paul Sabatier
2016
Helmholtz-Zentrum Hereon
2011-2012
Materia Nova
2005-2011
University of Mons
2000-2010
University of Salerno
2008
Vrije Universiteit Brussel
2008
Material (Belgium)
2001-2004
Thermogravimetric analysis (TGA) simultaneously coupled with mass spectrometry (MS) and Fourier transform infrared (FTIR) was developed as an original technique to study the thermal modification/degradation of poly(ε-caprolactone) (PCL) through in depth evolved gas. Perfectly well-defined PCL samples controlled end groups, predictable molecular weight, narrow weight distribution were synthesized by living "coordination−insertion" ring-opening polymerization ε-caprolactone initiated aluminum...
Abstract Polylactide (PLA)/clay nanocomposites loaded with 3 wt % organomodified montmorillonite and PLA/clay microcomposites containing sodium were prepared by melt blending. We investigated the morphology thermal properties of compared them unfilled PLA, keeping same thermomechanical history. The influence processing temperature on structural characteristics systems was determined. investigations performed differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), X‐ray...
Poly(ε-caprolactone)/clay nanocomposites were prepared by in-situ ring-opening polymerization of ε-caprolactone using dibutyltin dimethoxide as an initiator/catalyst. A nonmodified Na+−montmorillonite and two montmorillonites surface-modified dimethyl 2-ethylhexyl (hydrogenated tallow alkyl) methyl bis(2-hydroxyethyl) ammonium cations, respectively, used. The evolution molecular weights was followed in relation to silicate surface modification clay concentration. alcohol-bearing...
(Nano)composites based on ethylene vinyl acetate copolymers (EVA) and montmorillonite modified by various alkylammonium cations were processed mechanical kneading. Polymer intercalation filler exfoliation evidenced X-ray diffraction transmission electron microscopy, respectively. Nanocomposites tensile properties showed that Young's modulus increases significantly even at very low content of the organo-modified while preserving high ultimate elongation stress. The matrix thermal stability in...
Abstract Poly(ε‐caprolactone)/montmorillonite nanocomposites were prepared maintaining a constant inorganic content with three means: melt blending of poly(ε‐caprolactone) natural or organomodified clays, in situ polymerization ε‐caprolactone the presence and initiation from silicate layer appropriate montmorillonites activator. In this last case, polymer chains grafted to layers it was possible tune up grafting density. The clays did not modify crystallinity. It shown that process clay...
Abstract Polylactide (PLA) is an attractive candidate for replacing petrochemical polymers because it biodegradable and produced from annually renewable resources. Characterized by high tensile strength, unfortunately the brittleness rigidity of PLA limit its applicability. For a great number applications such as packaging, fibers, films, etc., interest to formulate new grades with improved flexibility better impact properties. In this objective, specific grade (L/D isomer ratio 96:4,...
Abstract A new concept to build shape memory polymers (SMP) combining outstanding fixity and recovery ratios (both above 99% after only one training cycle) typical of chemically crosslinked SMPs with reprocessability restricted physically is demonstrated by covalently bonding, through thermoreversible Diels–Alder (DA) adducts, star‐shaped poly( ε ‐caprolactones) (PCL) end‐functionalized furan maleimide moieties. PCL network easily prepared melt‐blending complementary end‐functional star in...
Cross-linked poly(ε-caprolactone) (PCL)-based polyesterurethane (PUR) systems have been synthesized through Diels-Alder reactions by reactive extrusion. The and retro-Diels-Alder proved to be useful for enhancing the molecular motion of PCL-based systems, therefore their crystallization ability, in design cross-linked semicrystalline polymers with one-way two-way shape-memory properties. Successive between α,ω-diol PCL (PCL(2) ), furfuryl alcohol, methylene diphenyl 4,4'-diisocyanate...
Abstract Poly( L ‐lactide)/layered aluminosilicate nanocomposites were synthesized in bulk by ring‐opening polymerization the presence of two organo‐modified montmorillonites. When organo‐modifier consisted an ammonium cation bearing primary hydroxyl groups, was initiated alcohol functions after adequate activation. The growing polymer chains directly “grafted” onto clay surface through hydroxyl‐functionalized cations yielding exfoliated with enhanced thermal stability. TEM image a fully...
Abstract Polylactide (PLA)‐layered silicate nanocomposites plasticized with 20 wt % of poly(ethylene glycol) 1000 were prepared by melt blending. Three kinds organo‐modified montmorillonites—Cloisite® 20A, Cloisite® 25A, and 30B—were used as fillers at a concentration level varying from 1–10 %. Neat PLA the same thermomechanical history considered for comparison. Nanocomposites based on amorphous obtained via melt‐quenching. The influence both plasticization nanoparticle filling...
Abstract High‐density polyethylene coated multiwalled carbon nanotubes (c‐MWNTs) and (MWNTs) have been dispersed into an ethylene vinyl acetate (EVA) copolymer by mechanical kneading. The effect of c‐MWNTs on tensile properties, thermo‐oxidative degradation, fire behavior has studied in comparison with virgin EVA EVA/MWNTs nanocomposites. Due to the better dispersion nanotubes, incorporation 3 wt % leads increase Young's modulus, cohesion combustion residues, a decrease peak heat‐release rate.
Abstract Nanocomposites based on an ethylene–vinyl acetate copolymer (27 wt.‐% vinyl acetate) and multiwall carbon nanotubes (MWNTs) have been prepared by melt blending their thermal degradation flame retardant properties evaluated. Special attention has paid to the influence of nanotube nature flammability more particularly time ignition (TTI) as measured cone calorimetry. It shown that there is a strong fire behaviour composites, especially previous MWNTs crushing proved substantially...