Hauptseite > Publikationsdatenbank > Influence of molecular weight on the distribution of segmental relaxation in polymer grafted nanoparticles > print

001     908552
005     20230123110631.0
024 7 _ |a 10.1103/PhysRevMaterials.6.L012601
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024 7 _ |a 2475-9953
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024 7 _ |a 2476-0455
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037 _ _ |a FZJ-2022-02676
082 _ _ |a 530
100 1 _ |a Sharma, Aakash
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245 _ _ |a Influence of molecular weight on the distribution of segmental relaxation in polymer grafted nanoparticles
260 _ _ |a College Park, MD
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520 _ _ |a The segmental dynamics of one-component nanocomposites (OCNC) is significantly influenced by the molecular weight (Mw) of the grafted polymer. Neutron backscattering shows that compared to the neat polymer the OCNCs exhibit a shift from slower segmental dynamics at low Mw to faster dynamics at high Mw. We model the local relaxation as distribution of exponential diffusers. This approach reveals the presence of fast and slow segments in both OCNCs. However, their fractional contribution varies with Mw leading to different average relaxation times. Our results present important insights into the origin of segmental mobility in OCNC and address the inconsistencies in different literature reports.
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650 2 7 |a Soft Condensed Matter
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650 1 7 |a Polymers, Soft Nano Particles and Proteins
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693 _ _ |a Forschungs-Neutronenquelle Heinz Maier-Leibnitz
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700 1 _ |a Kruteva, Margarita
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700 1 _ |a Zamponi, Michaela
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700 1 _ |a Ehlert, Sascha
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700 1 _ |a Richter, Dieter
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700 1 _ |a Förster, Stephan
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773 _ _ |a 10.1103/PhysRevMaterials.6.L012601
|g Vol. 6, no. 1, p. L012601
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|t Physical review materials
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|y 2022
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856 4 _ |y OpenAccess
|u https://juser.fz-juelich.de/record/908552/files/PhysRevMaterials.6.L012601.pdf
856 4 _ |y OpenAccess
|u https://juser.fz-juelich.de/record/908552/files/zamponi_influence_of_molecular_weight_Manuscript_PRM.pdf
856 4 _ |y OpenAccess
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