Journal Article

FZJ-2022-00028

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Strain- and field-induced anisotropy in hybrid elastomers with elongated filler nanoparticles

Seifert, J. ; Günzing, D. ; Webers, S. ; Dulle, M.FZJ* ; Kruteva, M.FZJ* ; Landers, J. ; Wende, H. ; Schmidt, A. M. (Corresponding author)

2021
Royal Soc. of Chemistry London

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Please use a persistent id in citations: doi:10.1039/D0SM02104K  doi:10.34734/FZJ-2022-00028

Abstract: The implementation of anisotropy to functional materials is a key step towards future smart materials. In this work, we evaluate the influence of preorientation and sample architecture on the strain-induced anisotropy in hybrid elastomers containing covalently attached elongated magnetic filler particles. Accordingly, silica coated spindle-type hematite particles are incorporated to poly(dimethylsiloxane)-based elastomers, and two types of composite architectures are compared: On the one hand a conventional architecture of filled, covalently crosslinked elastomers, and on the other hybrid elastomers that are crosslinked exclusively by covalent attachment of the polymer chains to the particle surface. By the application of external strain and with magnetic fields, the orientational order of the elongated particles can be manipulated, and we investigate the interplay between strain, magnetic order, and orientational order of the particles by combining 2D small angle X-ray scattering experiments under strain and fields with Mössbauer spectroscopy under similar conditions, and supplementary angular-dependent magnetization experiments. The converging information is used to quantify the order in these interesting materials, while establishing a direct link between the magnetic properties and the spatial orientation of the embedded magnetic nanoparticles.

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Contributing Institute(s):

1. Neutronenstreuung (JCNS-1)
2. Neutronenstreuung und biologische Materie (IBI-8)

Research Program(s):

1. 6G4 - Jülich Centre for Neutron Research (JCNS) (FZJ) (POF4-6G4) (POF4-6G4)
2. 633 - Life Sciences – Building Blocks of Life: Structure and Function (POF4-633) (POF4-633)
3. 5251 - Multilevel Brain Organization and Variability (POF4-525) (POF4-525)
4. 5241 - Molecular Information Processing in Cellular Systems (POF4-524) (POF4-524)

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Database coverage:
; ; ; Allianz-Lizenz / DFG ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; Essential Science Indicators ; IF < 5 ; JCR ; National-Konsortium ; Nationallizenz ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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