Investigation of craze development using small-angle X-ray scattering of synchrotron radiation

The development of crazes in polycarbonate was investigated with the method of ultra-small-angle X-ray scattering (USAXS) of synchrotron radiation. Measurements at different temperatures and with different draw rates were carried out. The two-dimensional scattering patterns were analyzed by means of...

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Bibliographic Details
Published in:Journal of macromolecular science. Physics 1999-09, Vol.38 (5-6), p.869-883
Main Authors: Pomper, T., Lode, U., Karl, A., Krosigk, G. v., Minko, S., Luzinov, I., Senkovsky, V., Voronov, A., Wilke, W.
Format: Article
Language:English
Subjects:
Applied sciences
Craze development
Exact sciences and technology
Mechanical properties
Organic polymers
Physicochemistry of polymers
Polycarbonate
Properties and characterization
Small-angle X-ray scattering
Submicrocracks
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Summary:The development of crazes in polycarbonate was investigated with the method of ultra-small-angle X-ray scattering (USAXS) of synchrotron radiation. Measurements at different temperatures and with different draw rates were carried out. The two-dimensional scattering patterns were analyzed by means of a fibrillar model of the craze. The geometrical parameters of the craze as a function of the macroscopic draw ratio were determined by using a curve-fitting procedure. From the measured values of the diameter and the mean distance of the fibrils, it is possible to calculate the volume fraction v f of the fibrils directly. Additional scattering caused by submicrocracks is discussed.
ISSN:0022-2348
1525-609X
DOI:10.1080/00222349908248145