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Characterization of Stressed and Crosslinked Polymers by 13C-CP/MAS and NMR Imaging

Published online by Cambridge University Press:  21 February 2011

Winfried Kuhn ,
Isolde Theis  and
Elmar Koeller
Winfried Kuhn
Affiliation:
Fraunhofer-Institute for Nondestructive Testing, Magnetic Resonance Division, Ensheimer Str. 48, D-6670 St. Ingbert
Isolde Theis
Affiliation:
Fraunhofer-Institute for Nondestructive Testing, Magnetic Resonance Division, Ensheimer Str. 48, D-6670 St. Ingbert
Elmar Koeller
Affiliation:
Fraunhofer-Institute for Nondestructive Testing, Magnetic Resonance Division, Ensheimer Str. 48, D-6670 St. Ingbert
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Abstract

Aging of polymers and elastomers is a time dependent alteration of the chemical composition and physical properties depending on the aging conditions. Chemical reactions and hence changes in the chemical composition result in many cases from influence by oxygen or solvents and treatment of the bulk material at high temperatures. Aging of the materials by mechanical strain as well as in an oxidative manner can alter the ratio of amorphous to crystalline portions in the polymer, break chemical bondings and hence can alter the physical behavior of the materials.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 217: Symposium U – Advanced Tomographic Imaging Methods for the Analysis of Materials , 1990 , 33
Copyright
Copyright © Materials Research Society 1991

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References

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