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Manipulating Solid-Surface Properties with Polymeric Agents

Published online by Cambridge University Press:  25 February 2011

H. Watanabe ,
S.S. Patel ,
J.F. Argillier ,
E.E. Parsonage ,
J. Mays ,
N. Dan-Brandon  and
M. Tirrell
H. Watanabe
Affiliation:
Department of Macromolecular Science, Faculty of Science, Osaka University, Toyonaka, Osaka 560, Japan.
S.S. Patel
Affiliation:
AT&T Bell Laboratories, 600 Mountain Ave, Murray Hill, NJ 07974–2070.
J.F. Argillier
Affiliation:
ATOCHEM, Centre d'Application de Levallois, 95, rue Danton, 92300 Levallois-Perret, France.
E.E. Parsonage
Affiliation:
3M, 3M Center, Bldg 201-2N-19, St. Paul, MN 55144–1000.
J. Mays
Affiliation:
Department of Chemistry, University of Alabama, Birmingham AL 35294.
N. Dan-Brandon
Affiliation:
Department of Polymer Reaserch, Weizmann Institute, Rehovot, Israel.
M. Tirrell
Affiliation:
Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, MN 55455
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Abstract

Colloidal processing offers a way to minimize undesired heterogeneities in the fabrication of advanced ceramics. Stable dispersions can be created by manipulation of interparticle potential. Adsorption of diblock copolymer amphiphiles provides a way to obtain long range repulsive interactions between particles, at comparatively low polymer coverage, thereby enabling suspension stabilization. In this study we investigate the relationship between copolymer structure and adsorbed layer characteristics, and specifically, the nature and range of interactions. We find that the surface density and interaction range are governed by a characteristic measure of the copolymer asymmetry. In the case of copolymers where one of the blocks is ionic, and therefore water soluble, we find a hysteresis in the interaction forces, indicating a meta-stable state of the polymer layer.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 249: Symposium Q – Synthesis and Processing of Ceramics: Scientific Issues , 1991 , 255
Copyright
Copyright © Materials Research Society 1992

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References

REFERENCES

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