Centre de Recherche sur les Nanomateriaux et l'Énergie
 
Advanced Materials & Processes, Volume 169, Numéro 4, Avril 2011
Mardi 31 Mai 2011
Catégories : / Revue de presse

Le magazine Advanced Materials & Processes a publié dans son numéro d'Avril 2011 un article concernant les recherches du Pr. Jérome Claverie sur le revêtements des nanoparticules et la caractérisation des polymères par la technique de Chromatographie à Perméation de Gel à Haute Température (HT-GPC).

Advanced Materials & Processes, Volume 169, Issue 4, April 2011 - Cover Advanced Materials & Processes, Volume 169, Issue 4, April 2011 - Article

Engineering nanoparticle coatings
Researchers working at NanoQAM, the nanotechnology research center of the University of Quebec (Montreal, Canada), developed novel polymer coatings based on data measured using a Viscotek high temperature gel permeation chromatography (HT-GPC) system from Malvern Instruments, UK. The system provides efficient polymer characterization including absolute molecular weight and structural information to support research goals. A key focus of the research is the development of polyolefin-based copolymers that are more hydrophilic. The aim is to produce coatings for nanoparticles that combine the mechanical properties of polyethylene with other capabilities, easily taking a dye for example. Studying the molecular weight and branching behavior of these copolymers uncovers the structure-property relationships necessary to efficiently tailor polymerisation reactions for their production.

Drops of water at the surface of a novel polyolefin coating on a steel coupon showing the low wettability of the coating. Image courtesy of Dr. Jerome Claverie, University of Quebec.
Drops of water at the surface of a novel polyolefin coating on a steel coupon showing
the low wettability of the coating. Image courtesy of Dr. Jerome Claverie, University of Quebec.

Malvern developed the system specifically for polyolefin analysis. These polymers are only sparingly soluble, necessitating the use of high temperatures throughout the analytical cycle. The Viscotek HT-GPC operates at temperatures to 160°C. The full triple detector configuration delivers absolute molecular weight without extrapolation or correction, molecular size (Rg and Rh), intrinsic viscosity, and branching information in a single GPC/SEC experiment. www.malvern.com/viscotek

Source : Advanced Materials & Processes