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Structure and Strength of Silica-PDMS Nanocomposites

Published online by Cambridge University Press:  10 February 2011

Adrian Camenzind ,
Thomas Schweizer ,
Michael Sztucki  and
Sotiris E. Pratsinis
Adrian Camenzind
Affiliation:
Particle Technology Laboratory, Institute of Process Engineering, Department of Mechanical and Process Engineering, ETH Zurich, Sonneggstrasse 3, CH-8092 Zurich, Switzerland
Thomas Schweizer
Affiliation:
Institute of Polymers, Department of Materials, ETH Zurich, Wolfgang-Pauli-Strasse 10, CH-8093 Zurich, Switzerland
Michael Sztucki
Affiliation:
European Synchrotron Radiation Facility (ESRF), BP 220, F-38043 Grenoble Cedex, France
Sotiris E. Pratsinis
Affiliation:
Particle Technology Laboratory, Institute of Process Engineering, Department of Mechanical and Process Engineering, ETH Zurich, Sonneggstrasse 3, CH-8092 Zurich, Switzerland
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Abstract

Commercially available SiO2 nanoparticles (Aerosil, Degussa) with varying primary particle diameter, specific surface area (SSA), degree of aggregation and structure (fractal dimension) were compounded into PDMS-based nanocomposites. Thin sections of cured nanocomposites were analyzed with TEM and small and ultra-small angle X-ray scattering (U/SAXS) with respect to nanocomposite structure such as: filler primary particle, aggregate (chemically or sinter-bonded particles) and agglomerate (physically-bonded particles). Tensile tests (Young’s modulus) were used to determine the nanocomposite strength which increased with increasing filler volume fraction (up to 12 vol%) consistent with “bound rubber” theory.

Keywords

polymercompositestrength
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1312: Symposium HH/II/JJ – Polymer-Based Materials and Composites—Synthesis, Assembly and Applications , 2011 , mrsf10-1312-ii05-10
Copyright
Copyright © Materials Research Society 2011

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References

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