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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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Barrau, Sophie
Unité Matériaux et Transformations
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (26/26 displayed)
- 2024Carbon nanotube/Insulating polymer composites for thermoelectric applications
- 2024Easy Processable Photomechanical Thin Film Involving a Photochromic Diarylethene and a Thermoplastic Elastomer in Supramolecular Interactioncitations
- 2023New Insight into Nanoscale Identification of the Polar Axis Direction in Organic Ferroelectric Filmscitations
- 2023Energy harvesting by uniaxially-stretched poly(lactide) films at low tensile strain frequencies for powering wearable sensors: experimental results and theoretical extrapolationcitations
- 2023Energy harvesting by uniaxially-stretched poly(lactide) films at low tensile strain frequencies for powering wearable sensors: experimental results and theoretical extrapolationcitations
- 2022Utilization of Catechol End-Functionalized PMMA as a Macromolecular Coupling Agent for Ceramic/Fluoropolymer Piezoelectric Compositescitations
- 2022Utilization of Catechol End-Functionalized PMMA as a Macromolecular Coupling Agent for Ceramic/Fluoropolymer Piezoelectric Compositescitations
- 2022Evaluation of shear piezoelectric coefficients by a bimorph cantilever technique for extruded and oriented poly( l ‐lactide) filmscitations
- 2022Is it possible to maintain photomechanical properties of crystalline diarylethenes after thermal amorphization?citations
- 2022Surface-initiated reversible addition fragmentation chain transfer of fluoromonomers: an efficient tool to improve interfacial adhesion in piezoelectric compositescitations
- 2022Thermoelectric properties of carbon nanotubes/poly(vinylidene fluoride) nanocomposites
- 2021Nanoscale investigation of functional properties of piezoelectric PVDF-based nanocomposites
- 2021Investigating the nanoscale physical properties of electroactive PVDF-based nanocomposites
- 2021Mastering Superior Performance Origins of Ionic Polyurethane/Silica Hybridscitations
- 2020Synthesis of lead-free (Bi0,5Na0,5)TiO3 thin film by RF magnetron sputtering: Impact of Na on the properties of filmcitations
- 2020Mechanistic insights on ultra-tough polylactide-based ionic nanocompositescitations
- 2020Thermoelectric properties of bulk multi-walled carbon nanotube - poly(vinylidene fluoride) nanocomposites: Study of the structure/property relationshipscitations
- 2020Probing the local piezoelectric behavior in stretched barium titanate/poly(vinylidene fluoride) nanocompositescitations
- 2019Synthesis of lead-free (Bi0,5Na0,5)TiO3 thin film by RF magnetron sputtering ; Synthesis of lead-free (Bi0,5Na0,5)TiO3 thin film by RF magnetron sputtering: Impact of Na on the Properties of the Film
- 2019Probing the local piezoelectric behavior in stretched barium titanate/poly(vinylidene fluoride) nanocompositescitations
- 2018Nanoscale Investigations of α- and γ-Crystal Phases in PVDF-Based Nanocompositescitations
- 2017Thermally reversible crosslinked copolymers: Solution and bulk behaviorcitations
- 2014Designing multiple-shape memory polymers with miscible polymer blends : evidences and origins of a triple-shape memory effect for miscible PLLA/PMMA blends
- 2009Propriétés physiques de nanocomposites NTC-polyepoxy: influence du traitement de surface des NTC
- 2008High photovoltage achieved in low band gap polymer solar cells by adjusting energy levels of a polymer with the LUMOs of fullerene derivativescitations
- 2005Spectroscopic detection of carbon nanotube interaction with amphiphilic molecules in epoxy resin compositescitations
Places of action
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article
Utilization of Catechol End-Functionalized PMMA as a Macromolecular Coupling Agent for Ceramic/Fluoropolymer Piezoelectric Composites
Abstract
An approach based on the use of a macromolecular coupling agent and the aim to improve the interfacial adhesion between piezoelectric ceramics and piezoelectric polymer matrix in piezoelectric composites is presented. Poly(methyl methacrylate) (PMMA) bearing a catechol moiety was used as a macromolecular coupling agent, as it is known to be miscible to piezoelectric fluoropolymers and catechol groups can strongly bind to a large variety of surfaces. Thus, entanglement between the PMMA chains and the amorphous segments of the fluoropolymer would ensure the desired interfacial adhesion. Well-defined PMMA was synthesized via RAFT polymerization using 2-cyano-2-propyl dodecyl trithiocarbonate as a chain-transfer agent. The PMMA ω-chain end was then functionalized with a catechol group via a one-pot aminolysis/thia-Michael addition procedure using a dopamine acrylamide (DA) derivative as a Michael acceptor. The presence of the catechol moiety at the chain end of PMMA was controlled by 1H NMR and cyclic voltammetry measurements. The resulting PMMA-DA was then grafted onto the surface of a lead-free piezoelectric ceramic film (i.e., a thin film of H2O2-activated (Bi0.5Na0.5)TiO3 (BNT) with a large contact area). The increase of the water contact angle confirmed the efficiency of the grafting. A commercial piezoelectric copolymer P(VDF-co-TrFE) was then spin-coated onto the modified BNT surface to form a bilayer composite. The composite cross section prepared by cryofracture was examined by scanning electron microscopy and revealed that the ceramic/polymer interface of the BNT-PMMA/P(VDF-co-TrFE) bilayer composite exhibits a much better cohesion than its counterpart composite prepared from nonmodified BNT. Moreover, the grazing incidence wide-angle X-ray scattering confirmed that the copolymer crystal structure was not impacted by the presence of the PMMA-DA coupling agent. A strong piezoelectric response was locally detected by piezoresponse force microscopy. This study highlights the potential of PMMA-DA as a macromolecular coupling agent to improve the ceramic/polymer interface in piezoelectric composite materials.