✦ LIBER ✦

Fourier-transformation of model chain pair configurations and their analysis in fourier-space

✍ Scribed by Gerhard Zifferer; Oskar Friedrich Olaj

Publisher: John Wiley and Sons
Year: 1995
Tongue: English
Weight: 750 KB
Volume: 4
Category: Article
ISSN: 1022-1344
DOI: 10.1002/mats.1995.040040402

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

Light scattering experiments may be used to determine a lot of quantities characteristic of a polymer. Numeric analysis of calculated scattering intensities of ensembles of polymer model chains in dilute solution (taking into account intramolecular as well as intermolecular interferences) according to the familiar methods and comparison of the results to the respective quantities evaluated directly in real space allows a check of the liability of data extracted from light scattering experiments. It turned out that the mean‐square radius of gyration as well as the excluded volume (which may be regarded as the second moment of the pair distribution function) are nearly perfectly reproduced. Higher moments, however, are subject to some error which is due to the characteristic changes in size, shape and orientation of polymers caused by intermolecular interaction which are not accounted for in the theories forming the basis of the analysis of light scattering data.

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