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Orientational relaxation times of worm-like chains

✍ Scribed by Andrzej Ziabicki; Leszek Jarecki; Angelo Perico; Marina Guenza

Publisher
John Wiley and Sons
Year
1995
Tongue
English
Weight
448 KB
Volume
4
Category
Article
ISSN
1022-1344

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✦ Synopsis

Abstract

A semi‐empirical formula for orientational relaxation times of worm‐like chains in dilute solutions is proposed

where Ο„~rod~ = Ο„~0~N^3^ is the relaxation time of a rigid rod composed of N segments, and x = 2__a__/L is the chain rigidity, i.e. the ratio of the double persistence length to the chain contour length, L. The formula, which can be used in the entire range of molecular rigidities and chain lengths, has been tested against segment relaxation times for semi‐rigid chains calculated from the optimized Rouse‐Zimm model.

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