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Youssry, M., Guyomard, D. & Lestriez, B. (2018) Carbon black dispersions in surfactant-based microemulsion. Journal of Materials Research, 33 1301–1307. 
Added by: Richard Baschera (2018-07-17 08:58:09)   Last edited by: Richard Baschera (2018-07-24 12:37:03)
Type de référence: Article
DOI: 10.1557/jmr.2017.451
Numéro d'identification (ISBN etc.): 0884-2914
Clé BibTeX: Youssry2018
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Créateurs: Guyomard, Lestriez, Youssry
Collection: Journal of Materials Research
Consultations : 1/271
Indice de consultation : 2%
Indice de popularité : 0.5%
In an attempt to introduce a novel approach to formulate carbon black (ketjen black) suspension with enhanced colloidal stability, improved flowability, and higher conductivity, ketjen black was dispersed in microemulsion systems composed of a non-ionic surfactant (Triton X100), decanol, and water. Rheo-electric and rheo-microscopy proved to be very powerful techniques that are able to elucidate the microstructure evolution with the composition and under shear flow. Interestingly, the carbon black slurries at low decanol/water ratio are weak gels (flowable) with higher electrical conductivity than those at higher ratio, which shows strong-gel viscoelastic response. In addition, the slurries show recoverable electrical behavior under shear flow in tandem with the viscosity trend. It is likely that the oil-in-water microemulsion enhances slurries' stability without affecting the percolating network of carbon black. On the other hand, the oil-in-water analogous and bilayer structure of the lamellar phase makes the slurries less conductive as a consequence of losing the network percolation.
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