skip to main content

SciTech ConnectSciTech Connect

Title: Inorganic/organic nanocomposites: Reaching a high filler content without increasing viscosity using core-shell structured nanoparticles

Extensive research is being conducted on the development of inorganic/organic nanocomposites for a wide variety of applications in microelectronics, biotechnologies, photonics, adhesives, or optical coatings. High filler contents are usually required to fully optimize the nanocomposites properties. However, numerous studies demonstrated that traditional composite viscosity increases with increasing the filler concentration reducing therefore significantly the material processability. In this work, we synthesized inorganic/organic core-shell nanocomposites with different shell thicknesses. By reducing the shell thickness while maintaining a constant core size, the nanoparticle molecular mass decreases but the nanocomposite filler fraction is correlatively increased. We performed viscosity measurements, which clearly highlighted that intrinsic viscosity of hybrid nanoparticles decreases as the molecular mass decreases, and thus, as the filler fraction increases, as opposed to Einstein predictions about the viscosity of traditional inorganic/polymer two-phase mixtures. This exceptional behavior, modeled by Mark-Houwink-Sakurada equation, proves to be a significant breakthrough for the development of industrializable nanocomposites with high filler contents.
Authors:
 [1] ;  [2] ; ;  [3] ; ; ;  [1] ;  [4] ; ; ; ;  [5]
  1. IMS Laboratory - UMR CNRS 5218, University of Bordeaux, 351 Cours de la Libération, 33405 Talence (France)
  2. (France)
  3. EDF, Centre d'Expertise et d'Inspection dans les Domaines de la Réalisation et de l'Exploitation (CEIDRE), Chinon, BP 80, 37420 Avoine (France)
  4. Maseeh College of Engineering and Computer Science, Portland State University, Oregon 97201 (United States)
  5. Polyrise SAS, 16 Avenue Pey Berland, 33607 Pessac (France)
Publication Date:
OSTI Identifier:
22489042
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 107; Journal Issue: 21; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; 77 NANOSCIENCE AND NANOTECHNOLOGY; ADHESIVES; COATINGS; EVALUATION; EXPERIMENTAL DATA; INORGANIC POLYMERS; MICROELECTRONICS; NANOCOMPOSITES; NANOPARTICLES; VISCOSITY