The dispersion of nanoscale inorganic fillers within a polymer allows to modulate the mechanical properties of a material. One of the ways used to prepare these nanocomposite materials relies on solvent evaporation. The purpose is to monitor the drying of these materials and to study their evolution from the semi-dilute solution towards the solid s...
Published in Scientific Reports
Notwithstanding potential neurotoxicity of inhaled titanium dioxide nanoparticles (TiO2 NPs), the toxicokinetics and consequences on blood-brain barrier (BBB) function remain poorly characterized. To improve risk assessment, we need to evaluate the impact on BBB under realistic environmental conditions and take into account vulnerability status suc...
The flexibility of C-S-H solid sheets may play, as is the case of other phyllosilicates, an important role in the structuration of "bulk" C-S-H. In this paper, we determine, for the first time to the author's knowledge, the bending modulus of tobermorite single sheets by the combination of molecular simulations and Kichhoff-Love plate theory. Furth...
Strategies for measuring occupational exposure to aerosols composed of nanoparticles and/or ultrafine particles highlight the use of techniques for determining airborne-particle number concentration as well as number size distribution. The objective of the present work was to set up a system for conducting laboratory verification campaigns of conde...
The aim of this experimental study was to investigate the performance of both portable and transportable devices devoted to the real-time measurement of airborne particle number concentration and size (distribution). Electrical mobility spectrometers (SMPS, FMPS, Nanoscan) as well as diffusion chargers (DiSCmini, Nanotracer) were studied. Both mono...
The handling of carbon nanotube (CNT) powders is a plausible scenario during the course of the CNT life-cycle. However, related exposure data remain limited. In this context, information about the dustiness of CNT is therefore of great interest, for example for control banding or exposure modelling. Here, we investigate the dustiness of fourteen CN...
En 2004, plusieurs experts réunis par la Commission Européenne estimaient par consensus que les risques potentiels des nanomatériaux manufacturés ne pouvaient être prédits ou dérivés des propriétés connues de la même matière sous une forme plus grossière. Selon leur estimation, fabriquer un nanomatériau revenait à créer un nouvel agent chimique dif...
Les stratégies de mesure des expositions professionnelles aux aérosols de nanomatériaux mettent en avant l’utilisation de techniques de mesure de la concentration en nombre de particules ainsi que leur distribution granulométrique. L’objectif de ces travaux était de mettre en place un système de référence permettant de mener en laboratoire des camp...
Ce rapport présente les résultats de quatre ans de recherche en partenariat entre le laboratoire PACTE de l'Université de Grenoble et l’INRS sur la prévention des risques liés aux nanomatériaux. L’utilisation des nanomatériaux constitue aujourd’hui une innovation technologique majeure dans tous les secteurs d’activité. Ces nouveaux matériaux représ...
NICOM 5 - Fifth International Symposium on Nanotechnology in Construction, CHICAGO, ETATS-UNIS, 24-/05/2015 - 26/05/2015
