Surface functionalization of CoFe2O4 nanoparticles for driving the crystallization of the electroactive β-PVDF through judicious tailoring of the hybrid interface
| Autor: | Elise Barthas, Chirine Ben Osman, Philippe Decorse, Fayna Mammeri |
|---|---|
| Přispěvatelé: | Interfaces, Traitements, Organisation et Dynamique des Systèmes (ITODYS (UMR_7086)), Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP) |
| Rok vydání: | 2019 |
| Předmět: |
chemistry.chemical_classification
Materials science Nanoparticle 02 engineering and technology Polymer 010402 general chemistry 021001 nanoscience & nanotechnology 7. Clean energy 01 natural sciences Miscibility Ferroelectricity 0104 chemical sciences law.invention Crystallinity Colloid and Surface Chemistry Differential scanning calorimetry chemistry Chemical engineering law [CHIM]Chemical Sciences Surface modification Crystallization 0210 nano-technology |
| Zdroj: | Colloids and Surfaces A: Physicochemical and Engineering Aspects Colloids and Surfaces A: Physicochemical and Engineering Aspects, Elsevier, 2019, 577, pp.405-411. ⟨10.1016/j.colsurfa.2019.05.072⟩ |
| ISSN: | 0927-7757 |
| Popis: | Recently, extrinsic polymer-based magnetoelectric multiferroic materials have been investigated for many applications in nanoelectronics and energy harvesting. For that, poly(vinylidene fluoride) (PVDF), crystallized in β-phase, is known to present good ferroelectric and piezoelectric properties. We report here the functionalization of cobalt ferrite nanoparticles, known to be magnetostrictive, by a 1H,2H,2H-Perfluorooctanephosphonic acid (PFOP) for their better miscibility in PVDF. Hybrid self-standing films have been prepared; the degree of crystallinity (Xmc), as well as the fraction of β-polymorph, have been determined as a function of the amount of either functionalized or not nanoparticles, combining infrared (IR) spectroscopy and differential scanning calorimetry (DSC). We evidenced that the use of functionalized nanoparticles induced a better crystallinity degree as well as an improvement of the whole crystallization of β-PVDF polymorph. These results highlight the crucial role of the hybrid interface, when tailored through suitable surface chemistry, on the morphology developed by the hybrid. |
| Databáze: | OpenAIRE |
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