| 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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Radulescu, Aurel
Forschungszentrum Jülich
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (29/29 displayed)
- 2024Advances in Small Angle Neutron Scattering on Polysaccharide Materialscitations
- 2023Structure of Single-Chain Nanoparticles under Crowding Conditions: A Random Phase Approximation Approachcitations
- 2023Extended <i>Q</i>-range small-angle neutron scattering to understand the morphology of proton-exchange membranes: the case of the functionalized syndiotactic-polystyrene model systemcitations
- 2023Extended Q -range small-angle neutron scattering to understand the morphology of proton-exchange membranes: the case of the functionalized syndiotactic-polystyrene model systemcitations
- 2023Influence of Chain Length of Gradient and Block Copoly(2-oxazoline)s on Self-Assembly and Drug Encapsulationcitations
- 2022Influence of chain length of gradient and block copoly(2-oxazoline)s on self-assembly and drug encapsulationcitations
- 2022Influence of Chain Length of Gradient and Block Copoly(2-oxazoline)s on Self-Assembly and Drug Encapsulationcitations
- 2022Influence of Chain Length of Gradient and Block Copoly(2‐oxazoline)s on Self‐Assembly and Drug Encapsulationcitations
- 2021Physicochemical approach to understanding the structure, conformation, and activity of mannan polysaccharidescitations
- 2021Poloxamine/D-α-Tocopheryl polyethylene glycol succinate (TPGS) mixed micelles and gels: Morphology, loading capacity and skin drug permeabilitycitations
- 2021Poloxamine/D-α-Tocopheryl polyethylene glycol succinate (TPGS) mixed micelles and gels:Morphology, loading capacity and skin drug permeabilitycitations
- 2021Morphology, gelation and cytotoxicity evaluation of D-α-Tocopheryl polyethylene glycol succinate (TPGS) – Tetronic mixed micellescitations
- 2021Chain-End Effects on Supramolecular Poly(ethylene glycol) Polymerscitations
- 2021Synthesis and Characterization of 4‐Vinylimidazolium/Styrene‐Cografted Anion‐Conducting Electrolyte Membranescitations
- 2020The Effects of Temperature and Humidity on the Microstructure of Sulfonated Syndiotactic–polystyrene Ionic Membranescitations
- 2020Revealing the Aggregation Mechanism, Structure, and Internal Dynamics of Poly(vinyl alcohol) Microgel Prepared through Liquid–Liquid Phase Separationcitations
- 2019All-In-One “Schizophrenic” Self-Assembly of Orthogonally Tuned Thermoresponsive Diblock Copolymerscitations
- 2019The Multilevel Structure of Sulfonated Syndiotactic-Polystyrene Model Polyelectrolyte Membranes Resolved by Extended Q-Range Contrast Variation SANScitations
- 2019Inner structure and dynamics of microgels with low and medium crosslinker content prepared via surfactant-free precipitation polymerization and continuous monomer feeding approach
- 2018Structure and morphology of model polymer electrolyte membranes based on sulfonated syndiotactic-polystyrene in the δ co-crystalline phase resolved by small-angle neutron scatteringcitations
- 2018Poly-ethylene-vinyl alcohol microgels prepared through salting out: Rationalizing the aggregation process and tuning the microstructural propertiescitations
- 2018Small angle neutron scattering study on the morphology of imidazolium-based grafted anion-conducting fuel cell membranescitations
- 2018Relevance of Internal Friction and Structural Constraints for the Dynamics of Denatured Bovine Serum Albumincitations
- 2017Block and gradient copoly(2-oxazoline) micelles: strikingly different on the insidecitations
- 2015Selective tuning of the self-assembly and gelation of a hydrophilic poloxamine by cyclodextrinscitations
- 2015Modulating the self-assembly of amphiphilic X-shaped block copolymers with cyclodextrins:Structure and mechanismscitations
- 2014Inner Structure of Adsorbed Ionic Microgel Particlescitations
- 2013A microscopic view on the large scale chain dynamics in nanocomposites with attractive interactionscitations
- 2013Studying Model samples to understand mechanical Properties of filled Elastomers
Places of action
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article
Extended <i>Q</i>-range small-angle neutron scattering to understand the morphology of proton-exchange membranes: the case of the functionalized syndiotactic-polystyrene model system
Abstract
<jats:p>Semi-crystalline polymers exhibit microphase separation into crystalline and amorphous domains characterized by multiple structural levels with sizes ranging from ångströms to hundreds of nanometres. The combination of small-angle (SANS) and wide-angle (WANS) neutron scattering on the same beamline enables reliable <jats:italic>in situ</jats:italic> characterization of such materials under application-relevant conditions, with the unique advantage of contrast variation by controlled labelling, allowing the structure of such multi-component systems to be resolved in detail. This paper reports a structural analysis performed on deuterated polymer membranes based on syndiotactic polystyrene (sPS) using an extended <jats:italic>Q</jats:italic>-range SANS and WANS combination, always with the same neutron scattering instrument, either a pinhole SANS diffractometer installed at a research reactor or a `small- and wide-angle' time-of-flight diffractometer installed at a neutron spallation source. sPS is a semi-crystalline material that becomes hydrophilic and proton conducting when suitable functionalization is achieved by thin film sulfonation, and can form various co-crystalline complexes (clathrates) with small organic molecules stored in the crystalline phase as guests in the vacancies between the polymer helices. Therefore, this material is interesting not only for its conducting properties but also for its versatility as a model system to evaluate the usefulness of extended <jats:italic>Q</jats:italic>-range neutron scattering in such studies. Variation of neutron contrast was achieved in the amorphous hydrophilic phase by using H<jats:sub>2</jats:sub>O or D<jats:sub>2</jats:sub>O to hydrate the membranes and in the crystalline phase by loading the clathrates with deuterated or protonated guest molecules. The experimental approach, the advantages and limitations of the two types of instrumentation used in such analyses, and the main results obtained with respect to the structural characterization of sulfonated sPS membranes under different hydration and temperature conditions are reported, and the potential of this method for similar structural studies on other semi-crystalline polymeric materials is discussed.</jats:p>