| 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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Schweins, Ralf
Institut Laue-Langevin
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (39/39 displayed)
- 2023The H-D-isotope effect of heavy water affecting ligand-mediated nanoparticle formation in SANS and NMR experimentscitations
- 2023The Effects of Amino Acid Functionalisation on the Optoelectronic Properties and Self-Assembly of Perylene Bisimidescitations
- 2023Aggregation Behavior of Nonsymmetrically End-Capped Thermoresponsive Block Copolymers in Aqueous Solutions: Between Polymer Coils and Micellar States
- 2023Arabinoxylan in Water through SANS: Single-Chain Conformation, Chain Overlap, and Clusteringcitations
- 2023Nanostructure in Amphiphile-Based Deep Eutectic Solventscitations
- 2023Potential of Small‐Angle Neutron Scattering for Evaluating Protein Locus within a Polymersomecitations
- 2022Resolving the different bulk moduli within individual soft nanogels using small-angle neutron scatteringcitations
- 2022How Temperature Rise Can Induce Phase Separation in Aqueous Biphasic Solutionscitations
- 2022Aggregation Behavior of Nonsymmetrically End-Capped Thermoresponsive Block Copolymers in Aqueous Solutions: Between Polymer Coils and Micellar Statescitations
- 2022Aggregation Behavior of Nonsymmetrically End-Capped Thermoresponsive Block Copolymers in Aqueous Solutions: Between Polymer Coils and Micellar Statescitations
- 2022Aggregation behavior of nonsymmetrically end-capped thermoresponsive block copolymers in aqueous solutionscitations
- 2021Direct Structural Evidence for Interfacial Gradients in Asymmetric Polymer Nanocomposite Blendscitations
- 2021Stress driven creep deformation and cavitation damage in pure coppercitations
- 2021Water-accessibility of interfibrillar spaces in spruce wood cell wallscitations
- 2020Efficiency Boosting of Surfactants with Poly(ethylene oxide)-Poly(alkyl glycidyl ether)s: A New Class of Amphiphilic Polymerscitations
- 2020Observing microfibril bundles in wood by small-angle neutron scattering
- 2020Using Small-Angle Scattering and Contrast Matching to Understand Molecular Packing in Low Molecular Weight Gelscitations
- 2020Using small-angle scattering and contrast matching to understand molecular packing in low molecular weight gelscitations
- 2020An in-depth analysis approach enabling precision single chain nanoparticle designcitations
- 2020Fluorination of Diamond Nanoparticles in Slow Neutron Reflectors Does Not Destroy Their Crystalline Cores and Clustering While Decreasing Neutron Lossescitations
- 2020Bundling of cellulose microfibrils in native and polyethylene glycol-containing wood cell walls revealed by small-angle neutron scatteringcitations
- 2020Moisture-related changes in the nanostructure of woods studied with X-ray and neutron scatteringcitations
- 2019Multicore Liquid Perfluorocarbon-Loaded Multimodal Nanoparticles for Stable Ultrasound and 19 F MRI Applied to In Vivo Cell Trackingcitations
- 2019Small-angle scattering model for efficient characterization of wood nanostructure and moisture behaviourcitations
- 2018Deswelling behaviour of ionic microgel particles from low to ultra-high densitiescitations
- 2018Preparation of Polymer Brush Grafted Anionic or Cationic Silica Nanoparticles: Systematic Variation of the Polymer Shellcitations
- 2016Interplay between Polymer Chain Conformation and Nanoparticles Assembly in Model Industrial Silica/Rubber Nanocompositescitations
- 2015Analysis of the structure of nanocomposites of triglyceride platelets and DNAcitations
- 2015Origin of Small-Angle Scattering from Contrast-Matched Nanoparticles: A Study of Chain and Filler Structure in Polymer Nanocompositescitations
- 2015Chain signal in nanolatex based nanocomposites
- 2014X-Ray Tomography and Small-Angle Neutron Scattering Characterization of Nano-Composites:Static and In Situ Experimentscitations
- 2013Magnetization reversal in Nd-Fe-B based nanocomposites as seen by magnetic small-angle neutron scatteringcitations
- 2013Effect of Grafting on Rheology and Structure of a Simplified Industrial Nanocomposite Silica/SBRcitations
- 2013Effect of grafting on rheology and structure of a simplified industrial nanocomposite silica/SBR.citations
- 2012Polymer-Grafted Magnetic Nanoparticles in Nanocomposites: Curvature Effects, Conformation of Grafted Chain, and Bimodal Nanotriggering of Filler Organization by Combination of Chain Grafting and Magnetic Fieldcitations
- 2011Responsive hybrid block co-polymer conjugates of proteins–controlled architecture to modulate substrate specificity and solution behaviourcitations
- 2011Reinforcement and Polymer Mobility in Silica–Latex Nanocomposites with Controlled Aggregationcitations
- 2010Direct small angle neutron scattering observation of stretched chain conformation in nanocomposites: more insight of polymer contributions in mechanical reinforcementcitations
- 2010Amphiphilic dual brush block copolymers as "giant surfactants" and their aqueous self-assemblycitations
Places of action
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article
Origin of Small-Angle Scattering from Contrast-Matched Nanoparticles: A Study of Chain and Filler Structure in Polymer Nanocomposites
Abstract
The conformation of poly(ethyl methacrylate) chains in silica-latex nanocomposites has been studied under zero average contrast conditions (ZAC) using small-angle neutron scattering (SANS). Samples have been prepared by drying colloidal suspensions of silica and polymer nanoparticles (NPs) followed by thermal annealing, for two different silica NPs (radius of 5 and 15 nm) and two chain molecular weights (17 and 100 kg/mol). By appropriate mixing of hydrogenated and deuterated polymer, chain scattering contrast is introduced, and in principle silica scattering suppressed. The silica structure consisting mostly of small fractal aggregates is characterized by transmission electron microscopy (TEM) and small-angle X-ray scattering (SAXS) on the same samples. The measurement of the chain structure by SANS, however, is perturbed by unwanted silica contributions, as often reported in the literature. Here, the contribution of contrast-matched silica is evidenced as a function of system parameters, namely chain mass, silica size, and volume fraction, and a model rationalizing these contributions for the first time is proposed. On the basis of a statistical analysis, a nanometer-thick polymer shell surrounding silica NPs is shown to create contrast, which is presumably maintained by the reduced mobility of polymer close to interfaces or attractive polymer silica interactions. This shell is proven to be quantitatively important only for the smallest silica NPs. Finally, the pure polymer scattering can be isolated, and the polymer radius of gyration is found to be independent of filler content and NP size.