Hostname: page-component-78c5997874-8bhkd Total loading time: 0 Render date: 2024-11-04T17:42:22.715Z Has data issue: false hasContentIssue false
  • English
  • Français

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
Get access

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

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

[1] Camenzind, A., Caseri, W. R. and Pratsinis, S. E.. “Flame-made nanoparticles for nanocomposites.” Nano Today, 5(1), (2010) 48.Google Scholar
[2] Teleki, A., Wengeler, R., Wengeler, L., Nirschl, H. and Pratsinis, S. E.. “Distinguishing between aggregates and agglomerates of flame-made TiO2 by high-pressure dispersion.” Powder Technol., 181(3), (2008) 292.Google Scholar
[3] Dobbins, R. A. and Megaridis, C. M.. “Morphology of Flame-Generated Soot as Determined by Thermophoretic Sampling.” Langmuir, 3(2), (1987) 254.Google Scholar
[4] Schaefer, D. W. and Keefer, K. D., In Fractal in Physics, Pietronero, L. and Tosatti, E., Eds. Elsevier Science: Amsterdam, 1986; p 39.Google Scholar
[5] Scheckman, J. H., McMurry, P. H. and Pratsinis, S. E.. “Rapid Characterization of Agglomerate Aerosols by In Situ Mass-Mobility Measurements.” Langmuir, 25(14), (2009) 8248.Google Scholar
[6] Kammler, H. K., Beaucage, G., Mueller, R. and Pratsinis, S. E.. “Structure of flame-made silica nanoparticles by ultra-small-angle X-ray scattering.” Langmuir, 20(5), (2004) 1915.Google Scholar
[7] Tsantilis, S. and Pratsinis, S. E.. “Soft- and hard-agglomerate aerosols made at high temperatures.” Langmuir, 20(14), (2004) 5933.Google Scholar
[8] Grass, R. N., Tsantilis, S. and Pratsinis, S. E.. “Design of high-temperature, gas-phase synthesis of hard or soft TiO2 agglomerates.” AIChE J., 52(4), (2006) 1318.Google Scholar
[9] Mueller, R., Kammler, H. K., Pratsinis, S. E., Vital, A., Beaucage, G. and Burtscher, P.. “Non-agglomerated dry silica nanoparticles.” Powder Technol., 140(1-2), (2004) 40.Google Scholar
[10] Piau, J. M., Dorget, M. and Palierne, J. F.. “Shear elasticity and yield stress of silica-silicone physical gels: Fractal approach.” J. Rheol., 43(2), (1999) 305.Google Scholar
[11] Wengeler, R., Teleki, A., Vetter, M., Pratsinis, S. E. and Nirschl, H.. “High-pressure liquid dispersion and fragmentation of flame-made silica agglomerates.” Langmuir, 22(11), (2006) 4928.Google Scholar
[12] Beaucage, G., Kammler, H. K. and Pratsinis, S. E.. “Particle size distributions from small-angle scattering using global scattering functions.” J. Appl. Crystallogr., 37, (2004) 523.Google Scholar
[13] Heine, M. C. and Pratsinis, S. E.. “Polydispersity of primary particles in agglomerates made by coagulation and sintering.” J. Aerosol Sci., 38(1), (2007) 17.Google Scholar
[14] Wengeler, R. and Nirschl, H.. “Turbulent hydrodynamic stress induced dispersion and fragmentation of nanoscale agglomerates.” J. Colloid Interf. Sci., 306(2), (2007) 262.Google Scholar
[15] Camenzind, A., Schweizer, T., Sztucki, M. and Pratsinis, S. E.. “Structure & strength of silica-PDMS nanocomposites.” Polymer, 51(8), (2010) 1796.Google Scholar
[16] Kraus, G.. “Reinforcement of Elastomers by Carbon-Black.” Rubber Chem. Technol., 51(2), (1978) 297.Google Scholar