| 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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Carroll, Bobby
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (13/13 displayed)
- 2023Influence of the Graft Length on Nanocomposite Structure and Interfacial Dynamicscitations
- 2023Influence of the Graft Length on Nanocomposite Structure and Interfacial Dynamicscitations
- 2023How Tuning Interfaces Impacts the Dynamics and Structure of Polymer Nanocomposites Simultaneouslycitations
- 2022Tuning the Properties of Nanocomposites by Trapping Them in Deep Metastable Statescitations
- 2021Direct Structural Evidence for Interfacial Gradients in Asymmetric Polymer Nanocomposite Blendscitations
- 2020Strong Reduction in Amplitude of the Interfacial Segmental Dynamics in Polymer Nanocompositescitations
- 2020Strong Reduction in Amplitude of the Interfacial Segmental Dynamics in Polymer Nanocompositescitations
- 2020Addition of Short Polymer Chains Mechanically Reinforces Glassy Poly(2-vinylpyridine)-Silica Nanoparticle Nanocompositescitations
- 2020Addition of Short Polymer Chains Mechanically Reinforces Glassy Poly(2-vinylpyridine)–Silica Nanoparticle Nanocompositescitations
- 2019Understanding the Static Interfacial Polymer Layer by Exploring the Dispersion States of Nanocompositescitations
- 2019Understanding the Static Interfacial Polymer Layer by Exploring the Dispersion States of Nanocompositescitations
- 2018Enhancing the Mechanical Properties of Glassy Nanocomposites by Tuning Polymer Molecular Weightcitations
- 2018Enhancing the Mechanical Properties of Glassy Nanocomposites by Tuning Polymer Molecular Weightcitations
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article
Enhancing the Mechanical Properties of Glassy Nanocomposites by Tuning Polymer Molecular Weight
Abstract
The addition of nanoparticles to a polymer matrix is a well-known process to improve the mechanical properties of polymers. Many studies of mechanical reinforcement in polymer nanocomposites (PNCs) focus on rubbery matrices; however, much less effort concentrates on the factors controlling the mechanical performance of the technologically important glassy PNCs. This paper presents a study of the effect of the polymer molecular weight (MW) on the overall mechanical properties of glassy PNCs with attractive interaction by using Brillouin light scattering. We found that the mechanical moduli (bulk and shear) have a nonmonotonic dependence on MW that cannot be predicted by simple rule of mixtures. The moduli increase with increasing MW up to 100 kg/mol followed by a drop at higher MW. We demonstrate that the change in the mechanical properties of PNCs can be associated with the properties of the interfacial polymer layer. The latter depend on the interfacial chain packing and stretching, as well as polymer bridging, which vary differently with the MW of the polymer. These competing contributions lead to the observed nonmonotonic variations of the glassy PNC moduli with MW. Our work provides a simple, cost-effective, and efficient way to control the mechanical properties of glassy PNCs by tuning the polymer chain length. Our finding can be beneficial for the rational design of PNCs with desired mechanical performance.