Waterborne WC nanodispersions

Nanolatexes derived from an imidazolium ionic liquid monomer are excellent dispersants for aggregated WC nanopowders. Multiple WC nanoparticles as small as 2nm are stabilized on and within these nanolatexes. [Display omitted] ▶ First stable waterborne WC dispersions. ▶ Smallest dispersed and stabili...

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Bibliographic Details
Published in:Colloids and surfaces. A, Physicochemical and engineering aspects Physicochemical and engineering aspects, 2011-01, Vol.374 (1-3), p.84-87
Main Authors: Giordano, Cristina, Yang, Wen, Lindemann, Andre, Crombez, Rene, Texter, John
Format: Article
Language:English
Subjects:
abrasives
Catalysis
catalytic activity
Chemistry
Colloidal gels. Colloidal sols
Colloidal state and disperse state
Dielectric loss
Dispersion
Dispersions
Exact sciences and technology
films (materials)
General and physical chemistry
hydrocolloids
Hydrogels
latex
Mechanical properties
Nanocomposites
Nanolatex
Nanomaterials
Nanoparticles
Nanopowder
Nanostructure
optical properties
Physical and chemical studies. Granulometry. Electrokinetic phenomena
Polishing
powders
suspensions
Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry
thermal diffusivity
transmission electron microscopy
Tungsten carbide
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Summary:Nanolatexes derived from an imidazolium ionic liquid monomer are excellent dispersants for aggregated WC nanopowders. Multiple WC nanoparticles as small as 2nm are stabilized on and within these nanolatexes. [Display omitted] ▶ First stable waterborne WC dispersions. ▶ Smallest dispersed and stabilized WC nanoparticles reported. ▶ Optical absorption of dispersed WC nanoparticles competitive with carbon in carbon nanotubes. Many inorganic nanoparticles are produced as powders, but their utilization is almost always in dispersion or suspension form. We present a novel nanolatex that is very effective at producing the first reported stable waterborne dispersions of nanoparticulate WC, starting with highly aggregated WC nanopowder. Transmission electron micrographs show that the nanopowder is highly dispersed in/on the hydrogel nanolatex particles. Thermal diffusivity, dielectric loss, optical, and mechanical properties of thin films derived from waterborne dispersions are presented. Such waterborne dispersions and nanocomposite films represent new materials for photothermal, hardening, abrasive/polishing and catalysis applications.
ISSN:0927-7757
1873-4359
DOI:10.1016/j.colsurfa.2010.11.014