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High-Temperature XRD Analysis of Polymers

Published online by Cambridge University Press:  06 March 2019

Robert W. Green*
Affiliation:
General Electric Co. Corporate Research and Development Schenectady, New York
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Extract

High-temperature x-ray diffraction has many applications. Applied to polymeric materials it is a useful tool for investigating changes in crystallinity, providing insight into molding and extrusion problems, and for examining solvent-resistancy problems. An example of the increasing crystailine character of a polymer as a function of temperature can be seen in figure 1. Diffraction scans at 25°C, 100°C, 150°C, and 200°C clearly show the increasing crystalline character of the potymer with an increase in temperature. Control of sample temperature for a polymer is very important, when analyzing under air, because a momentary overshoot in temperature may lead to the sample igniting. High-temperature investigations of polymers are also subject to the problem of the sample warping and bowing.

Type
IX. Nonambient Application of Diffraction
Copyright
Copyright © International Centre for Diffraction Data 1990

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References

1. Ostertag, W. and Fischer, G. R., Temperature Measurement with Metal Ribbon High Temperature X-Ray Furnaces. The Review of Scientific Instruments, Vol. 39, No. 6, 1968.Google Scholar