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Delegates of the national rheological societies
Society's Site Mar 2010 - Aug 2010
Appl. Rheol. 20:1 (2010) 59-70
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► Cite this publication as follows:
Rheological Societies: Society's Site Mar 2010 - Aug 2010, Appl. Rheol. 20 (2010) 59.
Nadia Antonova
3rd Eurosummer School on Biorheology & Symposium on micro and nanomechanics and mechanobiology of cells, tissues and systems
Appl. Rheol. 20:1 (2010) 55-56
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► Cite this publication as follows:
Antonova N: 3rd Eurosummer School on Biorheology & Symposium on micro and nanomechanics and mechanobiology of cells, tissues and systems, Appl. Rheol. 20 (2010) 55.
M. Lopez de Haro
5th International Workshop on Non-Equilibrium Thermodynamics IWNET 2009
Appl. Rheol. 20:1 (2010) 54-54
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► Cite this publication as follows:
LopezdeHaro M: 5th International Workshop on Non-Equilibrium Thermodynamics IWNET 2009, Appl. Rheol. 20 (2010) 54.
Kaouther Ben Azouz, Dominique Dupuis, Karim Bekkour
Rheological characterizations of dispersions of clay particles
Appl. Rheol. 20:1 (2010) 13041 (9 pages)
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In this work,we consider model fluids which are dispersions of clay particles in aqueous solutions of carboxymethyl cellulose.
Their rheological properties are measured in both steady and oscillatory shear flows.We present the experimental results
obtained for different polymer concentrations and for three different molecular weights of the polymer. The clay is a bentonite
sample and the particle concentration is fixed to a value of 5 %. The mechanical properties of these materials is the
result of a competition between different mechanisms: association-dissociation of aggregates of particles, adsorption of
polymer on the particles and desorption of solvent molecules from the particles, bridging of the particles by long polymer
chains.
► Cite this publication as follows:
BenAzouz K, Dupuis D, Bekkour K: Rheological characterizations of dispersions of clay particles , Appl. Rheol. 20 (2010) 13041.
Leszek Kulisiewicz, Antonio Delgado
High-pressure rheological measurement methods: A review
Appl. Rheol. 20:1 (2010) 13018 (15 pages)
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A review of rheological in situ measurement techniques applied to liquids and soft solids at high pressures of more than 100
MPa is presented.The instruments reported in the literature fall into four groups: concentric cylinder rheometers, falling body
and rolling ball viscometers, capillary viscometers and oscillatory systems. The measurement techniques are classified with
respect to the possibility of carrying out an absolute measurement. Some typical experimental problems and error sources
connected with high-pressure conditions are outlined and briefly discussed. The majority of the measurement techniques
described in the literature are designed for the determination of the dynamic shear viscosity or viscosity function and only a
few contributions report on the development of devices for the determination of other rheological parameters, e.g. normal
stress differences or viscoelastic moduli.
► Cite this publication as follows:
Kulisiewicz L, Delgado A: High-pressure rheological measurement methods: A review, Appl. Rheol. 20 (2010) 13018.
Reza Foudazi, Hossein Nazockdast
Rheology of Polypropylene/Liquid Crystalline Polymer Blends: Effect of Compatibilizer and Silica
Appl. Rheol. 20:1 (2010) 12218 (9 pages)
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The effect of classical compatibilizers and silica fillers, which are a new potential type of compatibilizers, on the rheological
properties of PP/LCP blends was investigated.The frequency sweep, shear stress growth and stress relaxation upon cessation
of steady shear were performed to probe the effect of the interfacial modification and the role of silica, on the rheological
behaviour of the blend. It was found that SEBS-g-MA improves the interfacial interaction more than SEBS due to the possible
chemical bonding between maleic anhydride groups and LCP chains. The results showed while the hydrophilic silica fills
both matrix and the LCP dispersed phases, the hydrophobic silica has some compatibilizing effect on PP/LCP blend samples.
► Cite this publication as follows:
Foudazi R, Nazockdast H: Rheology of Polypropylene/Liquid Crystalline Polymer Blends: Effect of Compatibilizer and Silica, Appl. Rheol. 20 (2010) 12218.
Aminallah Rabia, Madeleine Djabourov, Francois Feuillebois, Thierry Lasuye
Rheology of wet pastes of PVC particles
Appl. Rheol. 20:1 (2010) 11961 (9 pages)
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The present work deals with the study of the rheological behaviour of PVC (polyvinylchloride) pastes containing particles of
~ 150 μm in diameter obtained by polymerization in suspension.The rheological properties of the PVC pastes were characterized
by creep experiments using 6-bladed vane geometry. The pastes show a very small compliance and a very narrow linear
domain. The effects of temperature, of interstitial liquid and of saturation level of the wet paste were studied in detail and it
was found that they significantly modify the creep behaviour. Other techniques allowed us to characterise rearrangements
of the particles under load, in compression, by their oedometric modulus and by the failure stresses measured using a shear
box. A very high oedometric modulus was measured (20 MPa) and by application of the Mohr-Coulomb criterion the internal
friction coefficient (μ ~ 0.6) and the cohesion of the materials were deduced.We conclude from this investigation that the
interfacial properties of the grains play a major role in the behaviour of the wet pastes under shear or in compression. The
paper illustrates the difficulties in measuring the rheological and the structural properties of jammed systems made from
non-ideal (real) particles and reveals the key parameters in studying such media.
► Cite this publication as follows:
Rabia A, Djabourov M, Feuillebois F, Lasuye T: Rheology of wet pastes of PVC particles, Appl. Rheol. 20 (2010) 11961.
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