About the Experimental Determination of the Persistence Length of Wormlike Chains of Polystyrene

Abstract : This article describes a fitting method allowing to determine the persistence length of a wormlike Kratky-Porod chain. The form factor of a flexible polymer chain is measured by means of a scattering technique. Its theoretical expression is composed of the exact calculations of des Cloiseaux for an infinite chain and of the approximated function of Sharp and Bloomfield valid for a finite chain. Two examples of the determination of b illustrate this method : one describes a polyion in a semi dilute solution without salt, the other a polystyrene chain in its melt.
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Submitted on : Monday, January 1, 1996 - 8:00:00 AM
Last modification on : Monday, January 1, 1996 - 8:00:00 AM
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A. Brûlet, F. Boué, J. Cotton. About the Experimental Determination of the Persistence Length of Wormlike Chains of Polystyrene. Journal de Physique II, EDP Sciences, 1996, 6 (6), pp.885-891. ⟨10.1051/jp2:1996217⟩. ⟨jpa-00248338⟩

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