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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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Cidade, Maria Teresa
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (21/21 displayed)
- 2020Effects of polypropylene fibers and measurement methods on the yield stress of grouts for the consolidation of heritage masonry wallscitations
- 2020Yield Stress in Injection Grouts for Strengthening of Stone Masonry Wallscitations
- 2020Preliminary insights into electro-sensitive ecolubricants: A comparative analysis based on nanocelluloses and nanosilicates in castor oilcitations
- 2019Advances in Experimental and Computational Rheology
- 2019Experimental assessment of geopolymer grouts for stone masonry strengtheningcitations
- 2019Electrorheological behaviour of suspensions in silicone oil of doped polyaniline nanostructures containing carbon nanoparticlescitations
- 2017Experimental characterization of injection grouts incorporating hydrophobic silica fumecitations
- 2017Electrorheological behavior of suspensions of camphorsulfonic acid (CSA) doped polyaniline nanofibers in silicone oilcitations
- 2016Tribological behaviour of novel chemically modified biopolymer-thickened lubricating greases investigated in a steel-steel rotating ball-on-three plates tribology cellcitations
- 2015Experimental study and modeling of rheological and mechanical properties of NHL groutscitations
- 2014Polyurea dendrimer for efficient cytosolic siRNA deliverycitations
- 2014Electrorheological properties of polyaniline-vanadium oxide nanostructures suspended in silicone oilcitations
- 2013Biomimetic adhesives
- 2013Preparation and characterization of cellulose nanocomposite hydrogels as functional electrolytescitations
- 2012PVT and oscillatory tests to analyze pressure effects on polypropylene/Rodrun LC3000 blends: Determination of the pressure dependency of the viscositycitations
- 2008Experimental results for the rheological and rheo-optical behavior of poly(ethylene terephthalate)/liquid-crystalline polymer blendscitations
- 2007Influence of processing conditions on the morphological and mechanical properties of compatibilized PP/LCP blendscitations
- 2007Influence of processing conditions on the morphological development and final mechanical properties of PP/LCP blendscitations
- 2006Uniaxial extensional flow behavior of immiscible and compatibilized polypropylene/liquid crystalline polymer blendscitations
- 2005Influence of type of compatibilizer on the rheological and mechanical behavior of LCP/TP blends under different stationary and nonstationary shear conditionscitations
- 2004Evolution of morphological and rheological properties along the extruder length for blends of a commercial liquid crystalline polymer and polypropylenecitations
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article
PVT and oscillatory tests to analyze pressure effects on polypropylene/Rodrun LC3000 blends: Determination of the pressure dependency of the viscosity
Abstract
A combined analysis of Pressure-Volume-Temperature (PVT), Dynamic Mechanical Thermal Analysis (DMTA) and oscillatory flow measurements for blends of a polypropylene (PP) with a commercial liquid crystalline polymer (Rodrun LC3000) is presented. This analysis allows the determination of the pressure-viscosity coefficient b = partial derivative ln eta(0)/partial derivative P. This coefficient depends on the Rodrun LC300 content, increasing with it and is of the same order of magnitude as values reported for several commercial polymers showing a similar dependence of the viscosity on pressure. The analysis of the pressure dependence of Tg (related to b) leads to the conclusion that the number of segments involved in the glass transition of PP increases with the Rodrun LC3000 content, thus demonstrating that the polymers are not totally immiscible. As far as the authors know, this is the first time that the dependence of the viscosity on the pressure has been reported for thermoplastic/liquid crystalline polymer blends.