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- Title
Binder and Interphase Microstructure in a Composite Material Characterized by Scanning Electron Microscopy and NMR Spin Diffusion Experiments.
- Authors
Parisse, Silène; Petit, Jean‐Fabien; Forzy, Alexandre; Lecardeur, Alexandre; Beaugrand, Sandrine; Palmas, Pascal
- Abstract
1H NMR spin diffusion is shown to advantageously complement scanning electron microscopy (SEM) observations for the characterization of polymer structuring in composite materials. It is here demonstrated on a material containing a few percent of polymer binder and a crystalline organic/inorganic mixture as reinforcement. In SEM observations, polymer accumulations are seen. However, the polymer is also expected to fill small porosities and thin layers at the interface of particles to ensure the cohesion and the mechanical properties of the assembly. In most cases, this polymer structuring is invisible considering the resolution and contrast achieved by SEM on such material. It is thus investigated taking advantage of the two‐step decay of nuclear magnetic resonance spin diffusion curves. Average thickness values of 30 and 188 nm are estimated for the interphase and the overall polymer, respectively. Such structural information improves the knowledge of structure/property relationships and provides better understanding of material properties and making processes.
- Subjects
NUCLEAR spin; MAGNETIC resonance microscopy; SCANNING electron microscopy; COMPOSITE materials; NUCLEAR magnetic resonance; NANOMECHANICS
- Publication
Macromolecular Chemistry & Physics, 2020, Vol 221, Issue 2, pN.PAG
- ISSN
1022-1352
- Publication type
Article
- DOI
10.1002/macp.201900310