| 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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André, Stéphane
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (22/22 displayed)
- 2023Deformation mechanisms in PBT at elevated temperaturescitations
- 2022Deformation in Semi-Crystalline Polymers from a Heterogeneous Spherulitic Microstructure
- 2022Development of plasticity in vitrimers synthesized from a semi‐crystalline polymer using injection moldingcitations
- 2021An FFT solver used for virtual Dynamic Mechanical Analysis experiments: Application to a glassy/amorphous system and to a particulate compositecitations
- 2021Solid rheological properties of PBT-based vitrimerscitations
- 2021Certifying the intrinsic character of a constitutive law for semicrystalline polymers: a probation test
- 2021Certifying the intrinsic character of a constitutive law for semicrystalline polymers: a probation test ; Certifier du caractère intrinsèque d'une loi constitutive pour les polymères semi-cristallins : un test de probation
- 2020An FFT-solver used for virtual Dynamic Mechanical Analysis experiments: Application on a glassy/amorphous system and on a particulate composite
- 2019CONJOINT EFFECTS OF CHEMICAL AND MECHANICAL DEGRADATION STRESSORS ON FUEL CELL PFSA MEMBRANES
- 2018Viscoelastic behaviour of heterogeneous materials: extension of CraFT software to harmonic regime
- 2018Viscoelastic behaviour of heterogeneous materials studied thanks to an extension of CraFT software in harmonic regime
- 2017Mesoscopic strain field analysis in a woven composite using a spectral solver and 3D-DIC measurementscitations
- 2017In-situ continuous 1D/2D synchrotron SAXS scans to study the kinematics of plastic instability in SCP
- 2017Anisotropy development during HDPE necking studied at the microscale with in situ continuous 1D SAXS scanscitations
- 2016A Mechanical Study of a Glass Fabric-Thermoplastic Resin Composite: 3D-DIC and X-ray tomographic observations explained by numerical simulations based on a spectral solver
- 2016Advantages of a 3-parameter reduced constitutive model for the measurement of polymers elastic modulus using tensile testscitations
- 2015Kinematic study of necking in a semi-crystalline polymer through 3D Digital Image Correlationcitations
- 2015Influence of the fiber/matrix strength on the mechanical properties of a glass fiber/thermoplastic-matrix plain weave fabric compositecitations
- 2013A Common Multiscale Feature of the Deformation Mechanisms of a Semicrystalline Polymercitations
- 2011From the thermodynamics of constitutive laws to the thermomechanical experimental characterization of a semicrystalline polymer from IR imagingcitations
- 2010Investigation of the Mesostructure of a Mechanically Deformed HDPE by Synchrotron Microtomographycitations
- 2008Optical techniques for in situ dynamical investigation of plastic damagecitations
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article
Development of plasticity in vitrimers synthesized from a semi‐crystalline polymer using injection molding
Abstract
The main objective of this work is to analyze finely the influence of cross-linking on the mechanical properties of PBT (Polybutylene Terephtalate)-based vitrimers. Tensile tests were carried out at four temperatures (80°C, 100°C, 130°C and 160°C) on a series of vitrimer specimens made by injection molding for which the cross-linker concentrations were changed by small increments of 0.25%, from 0% to 2%. The displacement and strain fields were measured on the specimen surfaces through 3 D DIC (Digital Image Correlation) in order to analyse the strain localization/delocalization phenomena that occur during the successive stages of the deformation process. In particular, we measured the yield strain Y (onset of strain localization), and the strain at neck stabilization NS (beginning of the strain delocalization phase). When the degree of cross-linking increases, we observed two complementary effects leading to the decrease of the strain range during which plastic instability develops: Firstly Y increases. Secondly, and this is the main cause of the plastic instability strain range reduction, NS decreases. This latter effect results from the limitation in extensibility of the macromolecular network in the solid state caused by cross-linking. More specifically, cross-linking leads to two distinct modifications of the macromolecular network that both contribute to the reduction of its extensibility. The first is the decrease of the chain length between the network nodes. The second is the preorientation of the macromolecular network that occurs during injection molding in the case of vitrimers with high viscosities due to cross-linking. Eventually, when Y NS → , the suppression of the yield point on the tensile curve was observed for the most cross-linked vitrimers. Furthermore, in the temperature range of investigation, NS was found to be independent of temperature.