| 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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Laverock, Jude
University of Bristol
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (13/13 displayed)
- 2024Composition-driven Mott transition within SrTi1 − x Vx O3
- 2024Surface modification of cellulose nanomaterials with amine functionalized fluorinated ionic liquids for hydrophobicity and high thermal stabilitycitations
- 2024Self-healing composite coating fabricated with a cystamine crosslinked cellulose nanocrystal stabilized Pickering emulsioncitations
- 2023Epitaxial stabilisation of uranium silicide line compoundscitations
- 2023Epitaxial stabilisation of uranium silicide line compoundscitations
- 2023Quantifying and mitigating optical surface loss in suspended GaAs photonic integrated circuitscitations
- 2023Quantifying and mitigating optical surface loss in suspended GaAs photonic integrated circuitscitations
- 2022Ex-situ Ge-doping of CZTS Nanocrystals and CZTSSe Solar Absorber Filmscitations
- 2022Ex situ Ge-doping of CZTS nanocrystals and CZTSSe solar absorber films.citations
- 2015Simultaneous spectroscopic, diffraction and microscopic study of the metal-insulator transition of VO2citations
- 2015Enhanced electron correlations at the SrxCa1-xVO3 surfacecitations
- 2014Direct observation of decoupled structural and electronic transitions and an ambient pressure monocliniclike metallic phase of VO2citations
- 2012Strain dependence of bonding and hybridization across the metal-insulator transition of VO 2citations
Places of action
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article
Surface modification of cellulose nanomaterials with amine functionalized fluorinated ionic liquids for hydrophobicity and high thermal stability
Abstract
A highly hydrophobic fluorinated ionic liquid (IL), 3-aminopropyl-tributylphosphonium bis(trifluoromethylsolfonyl)imide ([aP4443][NTf2]), was synthesized, and applied for the surface modification of cellulose nanomaterials (CNMs) by reductive amination. The modified CNMs were fully characterized for their chemical structure, morphology, thermal stability, and surface hydrophobicity. Results obtained from Nuclear Magnetic Resonance spectroscopy (1H, 13C, 19F and 31P), Fourier Transform Infrared spectroscopy, X-ray Photoelectron Spectroscopy, and X-ray diffraction confirmed the successful grafting of [aP4443][NTf2] onto the surface of CNMs up to a degree of surface functionalization of 2.5 %. Transmission Electron Microscopy analysis confirmed the dimensions of the CNMs were retained after modification but with significant aggregation for modified cellulose nanocrystals (CNCs). Thermal Gravimetric Analysis demonstrated significant increases in the degradation temperatures of modified CNCs from ∼252 °C to ∼310 °C. Modified cellulose nanofibers (CNFs) did not show any increase in thermal stability. The modified CNM suspensions showed reduced affinity for water and the formation of aggregates in aqueous media. Furthermore, a water contact angle test demonstrated enhanced hydrophobicity for modified CNMs. This modification approach holds potential for the use of the [aP4443][NTf2] IL for functional materials to achieve novel hydrophobic CNMs suitable for aqueous processing with thermoplastics and for fabrication of thermally stable composite materials.