Orientational behavior of ellipsoidal silica-coated hematite nanoparticles integrated within an elastomeric matrix and its mechanical reinforcement
- Sánchez-Ferrer, Antoni ETH Zurich, Institute of Food, Nutrition and Health, Food and Soft Materials Science, Zurich, Switzerland
- Mezzenga, Raffaele ETH Zurich, Institute of Food, Nutrition and Health, Food and Soft Materials Science, Zurich, Switzerland
- Dietsch, Hervé Adolphe Merkle Institute and Fribourg Center for Nanomaterials, University of Fribourg, Switzerland
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15.03.2011
Published in:
- Macromolecular Chemistry and Physics. - 2011, vol. 212, no. 6, p. 627–634
English
The mechanical and orientational properties of IOENs consisting of integrated ellipsoidal SCH spindle-type nanoparticles within an elastomeric matrix are reported. The influence of the SCH surface chemistry, leading either to dispersed nanoparticles or crosslinked nanoparticles within the surrounding elastomeric matrix, is studied by mechanical uniaxial deformation (stress-strain) and SAXS measurements under stress. Without surface modifications, the SCH nanoparticles act as defects, and the Young's modulus of the elastomeric matrix remains unmodified. Surface-modified SCH nanoparticles acting as crosslinkers increase Young's modulus by a factor 1.2. SAXS measurements demonstrate that the integrated ellipsoidal nanoparticles orient upon a deformation larger than 50% independently of the specific integration strategy.
- Faculty
- Faculté des sciences et de médecine
- Department
- AMI - Soft Nanoscience
- Language
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- English
- Classification
- Physics
- License
- License undefined
- Identifiers
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- RERO DOC 22442
- DOI 10.1002/macp.201000720
- Persistent URL
- https://folia.unifr.ch/unifr/documents/301841
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