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In-situ preparation of polymer-coated zirconia nanoparticles by decomposition of zirconium-tert-butoxide

Published online by Cambridge University Press:  11 February 2011

Michael Schallehn ,
Volker Lorenzen ,
Johannes Seydel  and
Horst Hahn
Michael Schallehn
Affiliation:
SusTech GmbH&Co. KG, Petersenstrasse 20, 64287 Darmstadt, Germany
Volker Lorenzen
Affiliation:
SusTech GmbH&Co. KG, Petersenstrasse 20, 64287 Darmstadt, Germany
Johannes Seydel
Affiliation:
Institute of Materials Science, Darmstadt University of Technology, Petersenstrasse 23, 64287, Darmstadt, Germany
Horst Hahn
Affiliation:
Institute of Materials Science, Darmstadt University of Technology, Petersenstrasse 23, 64287, Darmstadt, Germany
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Abstract

Nanocrystalline zirconia particles coated with polymers have been prepared by a two step Chemical Vapor Synthesis process using a hot wall reactor to synthesize the nanocrystalline ceramic core and a subsequent RF plasma reactor for the polymer coating. The polymer coating is built up of organic byproducts of the pyrolysis of the zirconia precursor. By using continuous and pulsed plasma deposition and variation of the plasma parameters, such as RF power, period and duty-cycle, the structure and thickness of the polymer coating can be influenced. Typical particle radii are in the range of 3 to 4 nm with radii of the ceramic core in the range of 2 nm and a coating thickness in the range of 1 to 2 nm. The powders have been characterized by FT-IR, XRD, BET and HRTEM. Consequences for the dispersibility are reported.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 740: Symposium I – Nanomaterials for Structural Applications , 2002 , I11.12
Copyright
Copyright © Materials Research Society 2003

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References

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