| People | Locations | Statistics |
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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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George, Matthieu
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (21/21 displayed)
- 2022Bridging steady-state and stick-slip fracture propagation in glassy polymerscitations
- 2021Bridging steady-state and stick-slip fracture propagation in glassy polymerscitations
- 2020Microstructure Characterization of Oceanic Polyethylene Debriscitations
- 2020Microstructure Characterization of Oceanic Polyethylene Debriscitations
- 2019A comparative study of degradation mechanisms of PBSA and PHBV under laboratoryscale composting conditionscitations
- 2019New Insights For The Fragmentation Of Plastics Into Microplastics In The Ocean
- 2019Experimental and theoretical study of the erosion of semi-crystalline polymers and the subsequent generation of microparticles.citations
- 2018In Situ AFM Investigations and Fracture Mechanics Modeling of Slow Fracture Propagation in Oxide and Polymer Glasses.citations
- 2018In situ AFM investigation of slow crack propagation mechanisms in a glassy polymercitations
- 2016Bottom-up model for understanding the effects of wheat endosperm microstructure on its mechanical strengthcitations
- 2015Multiscale investigation of stress-corrosion crack propagation mechanisms in oxide glassescitations
- 2014Numerical modeling of wheat fractionation role of starch volume fraction
- 2013Nano-mechanical properties of starch and gluten biopolymers from atomic force microscopycitations
- 2013Adhesion properties of wheat-based particlescitations
- 2011Quantitative Analysis of Crack Closure Driven by Laplace Pressure in Silica Glasscitations
- 2009Mechanical effect of capillary forces in the crack tip of a DCDC specimen
- 2008Dynamic condensation of water at crack tips in fused silica glasscitations
- 2007FORMATION AND EVOLUTION OF A CONFINED LIQUID CONDENSATE AT THE CRACK TIP IN GLASSES
- 2007Effect of stress gradient at the vicinity of a crack tip on ionic diffusion in silicate glasses : an AFM study
- 2006FORMATION AND EVOLUTION OF A CONFINED LIQUID CONDENSATE AT THE CRACK TIP IN GLASSES
- 2006Effect of stress gradient at the vicinity of a crack tip on ionic diffusion in silicate glasses : an AFM study
Places of action
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article
Nano-mechanical properties of starch and gluten biopolymers from atomic force microscopy
Abstract
International audience ; An original method based on atomic force microscopy (AFM) in contact mode was developed to abrade progressively the surface of tablets made of starch or gluten polymers isolated from wheat. The volume of the material removed by the tip was estimated from the analysis of successive topographic images of the surface, and the shear force was measured by keeping a constant normal force. Our data together with a simple tribological model provide clear evidence for a higher hardness and shear strength of starch compared to gluten. Gluten appears to have mechanical properties close to soft materials, such as talc, whereas starch displays higher hardness close to calcite. Our results are in a better agreement with structural properties of gluten (complex protein network) and starch (granular and semi-cristalline structure) than earlier studies by micro-indentation. This work shows that the AFM scratching method is relevant for the characterization of any polymer surface, in particular in application to materials made of different polymers at the nano-scale.