Molecular orientation of stretched rubber

Diffraction patterns of stretched rubber differ in machine direction (MD) and in transverse direction (TD), as the molecules orient themselves according to the tensile direction.

Background

Since XRD measurements using 0D or 1D detectors perform scans targeting only a part of a diffraction ring, it can be difficult to obtain diffraction beams because of the arrangement of the molecules. In contrast, with XRD measurements using a 2D detector, diffraction patterns are gained from 360 degrees in one measurement, making it easy to identify the molecular orientation of a sample. If a sample is amorphous, it will show a broad ring pattern known as halo. If a sample is crystalline, it will show a narrow ring pattern or, depending on the orientation, a ring pattern that has become partly spot-like.

Request a PDF copy of this report.


The D/MAX RAPID II is arguably the most versatile X-ray area detector in the history of materials analysis. In production for well over a decade and continuously improved during that time period, the success of the RAPID II is a testament to the suitability of imaging plate technology for measuring diffraction patterns and diffuse scattering from a wide range of materials. Read more...

Ask for more info