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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Galindo Rosales, Fj
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Topics
Publications (10/10 displayed)
- 2021Rheological characterization of polymeric solutions used in spray drying processcitations
- 2020Large Amplitude Oscillatory Shear (LAOS) Experiments on Colloidal Ceramic Paste Formulated for Robocasting Applications
- 2020Breakup of an electrified viscoelastic liquid bridgecitations
- 2016Complex Fluids in Energy Dissipating Systemscitations
- 2012Microfluidic systems for the analysis of viscoelastic fluid flow phenomena in porous mediacitations
- 2011Assessment of the dispersion quality in polymer nanocomposites by rheological methodscitations
- 2010Static and dynamic yield stresses of aerosil® 200 suspensionsin polypropylene glycol
- 2009Rheological characterization of a time dependent fresh cement pastecitations
- 2007Structural level of silica-fumed aqueous suspensionscitations
- 2007The Hamaker constant of anatase aqueous suspensionscitations
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article
Static and dynamic yield stresses of aerosil® 200 suspensionsin polypropylene glycol
Abstract
Fumed silica suspensions in low molecular weight liquids are used in many photonic and microelectronic applications, playing its rheology a major role in the effectiveness of their usage. Particle-particle and particle-liquid medium interactions of suspensions of hydrophilic fumed silica in low molecular weight polar media, polypropylene glycol of 400 and 750 g/mol, concretely, have been already investigated. There, the affinity between polar solvent molecules and fumed silica particles prevents the formation of a 3D gel network. In this work it has been found that fumed silica can develop a flocculated suspension when it is dispersed in polypropylene glycol with a molecular weight of 2000 g/mol. Besides, it has been found that this suspension exhibits time dependent behaviour within its reversible shear thinning region, which is related to thixoelasticity. The experimental method, proposed theoretically by Cheng in 1986 to obtain the dynamic yield stress in thixotropic systems has been here extended successfully to a thixoelastic system. © Appl. Rheol.