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Surface Dynamics and Hydrophobicity of High-Voltage Insulator Polymers

Published online by Cambridge University Press:  05 April 2013

Oliver Fritz ,
Philip T. Shemella ,
Teodoro Laino  and
Alessandro Curioni
Oliver Fritz
Affiliation:
ABB Switzerland Ltd, Corporate Research, Baden-Dättwil, Switzerland
Philip T. Shemella
Affiliation:
IBMResearch – Zurich, Rüschlikon, Switzerland
Teodoro Laino
Affiliation:
IBMResearch – Zurich, Rüschlikon, Switzerland
Alessandro Curioni
Affiliation:
IBMResearch – Zurich, Rüschlikon, Switzerland
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Abstract

Using large-scale, all-atom molecular dynamics simulations, we show that microscopic mechanisms found for molecules on the material surface of siloxane polymers can explain an important surface-hydrophobicity restoration process. In particular, a net orientation and polarization on the surface can be found which is the result of an augmented motion of certain molecules. Based on this result, surface hydrophobicity, its loss through oxidation, and its restoration through a unique interaction between cyclomethicone molecules, oxidized methyl groups, and counterions can be understood.

Keywords

Simulationdiffusionsurface chemistry
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1535: Symposium a – Proceedings of the Multiscale Materials Modeling 2012 Conference , 2013 , mmm2012-a-0336
Copyright
Copyright © Materials Research Society 2013 

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References

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