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Stem Observations of the Microstructures Present in Polymer Blend Thin Films.

Published online by Cambridge University Press:  26 February 2011

K. E. Sickafus
Affiliation:
University of Cambridge, Cavendish Laboratory, Cambridge CB3 01E, U. K.
S. D. Berger
Affiliation:
University of Cambridge, Cavendish Laboratory, Cambridge CB3 01E, U. K.
A. M. Donald
Affiliation:
University of Cambridge, Cavendish Laboratory, Cambridge CB3 01E, U. K.
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Abstract

This paper examines the effectiveness of scanning transmission electron microscopy (STEM) as an analytical tool for determining composition in multi-phase polymer blend microstructures. The polymer blend polystyrene (PS) - polyether sulphone (PES) thin film used in this study exhibited a two-phase microstructure consisting of PES-rich inclusions, ranging from 0.2μm to 1.2μm in diameter, in a PS-rich matrix. Emphasis in this presentation is placed on the use of annular dark-field (ADF) STEM image contrast to infer information concerning the local composition of adjacent microstructural features.

Type
Articles
Copyright
Copyright © Materials Research Society 1987

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References

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