| People | Locations | Statistics |
|---|---|---|
| Naji, M. |
| |
| Motta, Antonella |
| |
| Aletan, Dirar |
| |
| Mohamed, Tarek |
| |
| Ertürk, Emre |
| |
| Taccardi, Nicola |
| |
| Kononenko, Denys |
| |
| Petrov, R. H. | Madrid |
|
| Alshaaer, Mazen | Brussels |
|
| Bih, L. |
| |
| Casati, R. |
| |
| Muller, Hermance |
| |
| Kočí, Jan | Prague |
|
| Šuljagić, Marija |
| |
| Kalteremidou, Kalliopi-Artemi | Brussels |
|
| Azam, Siraj |
| |
| Ospanova, Alyiya |
| |
| Blanpain, Bart |
| |
| Ali, M. A. |
| |
| Popa, V. |
| |
| Rančić, M. |
| |
| Ollier, Nadège |
| |
| Azevedo, Nuno Monteiro |
| |
| Landes, Michael |
| |
| Rignanese, Gian-Marco |
|
Parisi, Daniele
University of Groningen
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (24/24 displayed)
- 2024Phase inversion detection in immiscible binary polymer blends via zero-shear viscosity measurementscitations
- 2024Phase inversion detection in immiscible binary polymer blends via zero-shear viscosity measurementscitations
- 2024A novel SBS compound via blending with PS-B-PMBL diblock copolymer for enhanced mechanical propertiescitations
- 2024Enzymatic bulk synthesis, characterization, rheology, and biodegradability of biobased 2,5-bis(hydroxymethyl)furan polyesterscitations
- 2023Effect of Dynamically Arrested Domains on the Phase Behavior, Linear Viscoelasticity and Microstructure of Hyaluronic Acid - Chitosan Complex Coacervatescitations
- 2023Effect of Dynamically Arrested Domains on the Phase Behavior, Linear Viscoelasticity and Microstructure of Hyaluronic Acid - Chitosan Complex Coacervatescitations
- 2023Gelation and Re-entrance in Mixtures of Soft Colloids and Linear Polymers of Equal Sizecitations
- 2023Hydrophobically modified complex coacervates for designing aqueous pressure-sensitive adhesivescitations
- 2023Hydrophobically modified complex coacervates for designing aqueous pressure-sensitive adhesivescitations
- 2023Undershoots in shear startup of entangled linear polymer blendscitations
- 2022Alternative use of the sentmanat extensional rheometer to investigate the rheological behavior of industrial rubbers at very large deformationscitations
- 2021Nonlinear rheometry of entangled polymeric rings and ring-linear blendscitations
- 2021Internal Microstructure Dictates Interactions of Polymer-grafted Nanoparticles in Solutioncitations
- 2021Effect of softness on glass melting and re-entrant solidification in mixtures of soft and hard colloidscitations
- 2021Tunable Hydrogels with Improved Viscoelastic Properties from Hybrid Polypeptidescitations
- 2021Rheological response of entangled isotactic polypropylene melts in strong shear flowscitations
- 2021Nonlinear Shear Rheology of Entangled Polymer Ringscitations
- 2020Flow-induced crystallization of poly(ether ether ketone)citations
- 2020Determination of intrinsic viscosity of native cellulose solutions in ionic liquidscitations
- 2020Stress Relaxation in Symmetric Ring-Linear Polymer Blends at Low Ring Fractionscitations
- 2020Shear Flow-Induced Crystallization of Poly(ether ether ketone)citations
- 2019Extensional rheology of ring polystyrene melt and linear/ring polystyrene blends
- 2019Extensional rheology of ring polystyrene melt and linear/ring polystyrene blends
- 2018Asymmetric soft-hard colloidal mixturescitations
Places of action
| Organizations | Location | People |
|---|
article
Rheological response of entangled isotactic polypropylene melts in strong shear flows
Abstract
<p>Isotactic polypropylene (iPP) melts are industrial semicrystalline polymers whose processing typically involves strong shear flows. The study of the rheological response of iPP melts, well beyond the linear viscoelastic limit, is limited by edge fracture, which manifests in rotational rheometers. In this work, we used a reflection polariscope under shear to detect the onset shear rate at which edge fracture is observed for various rotational rheometry fixture diameters. The onset shear rate for edge fracture was found to correlate with the zero-shear viscosity, thereby enabling the prediction of edge fracture by only knowing the zero-shear viscosity; a quantity that is easier to measure compared to the second normal stress difference. Edge fracture is then mitigated by using a cone-partitioned plate, which enabled the study of the first normal stress difference, and in combination with capillary rheometry, allowed the measurement of flow curves with a very well-resolved shear thinning region. For strongly polydisperse iPPs at high shear rates, we found that viscosity scales as the −0.7 power of the shear rate, while primary normal stress difference scales as the square root of the shear rate. The dependence of the shear thinning of iPPs on polydispersity was then unravelled, offering a broad set of data to develop and test molecular models.</p>