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Small-angle x-ray scattering measurements of diffuse phase-boundary thicknesses in segmented polyurethane elastomers

✍ Scribed by Koberstein, Jeffrey T. ;Stein, Richard S.

Book ID
105334905
Publisher
Wiley (John Wiley & Sons)
Year
1983
Tongue
English
Weight
854 KB
Volume
21
Category
Article
ISSN
0098-1273

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✦ Synopsis

Abstract

The diffuse phase boundary thicknesses of two segmented polyurethane block copolymers have been determined by small‐angle x‐ray scattering analyses of deviations from Porod's law. A self‐consistency test of these measurements is performed by comparing results of experiments carried out under a variety of collimation geometries, and using a number of different analytical procedures. Self‐consistent values of the diffuse phase boundary thickness are obtained for both of the materials examined. The discrepancies between these values and previous literature values are discussed and possible origins of these differences are presented.

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