Issue 11, 2018

Conformational properties and the entropic barrier in the “head-on” adsorption of a single polymer chain towards a flat surface

Abstract

This work investigates the change in conformations and the entropic free energy barrier in the “head-on” adsorption process of a flexible polymer chain towards a flat surface in the framework of the Gaussian chain model. Analytical expressions are reported for the distribution of chain end, the mean square end-to-end distance, the entropic free energy barrier and the adsorption equilibrium constant at low surface coverage (the “mushroom” regime). Theoretical results are discussed in the context of polyoxyethylene-phosphonate-type polymer dispersants, possessing a non-adsorbing polyoxyethylene chain and an adsorbing head-group.

Graphical abstract: Conformational properties and the entropic barrier in the “head-on” adsorption of a single polymer chain towards a flat surface

Supplementary files

Article information

Article type
Paper
Submitted
02 Jan 2018
Accepted
12 Feb 2018
First published
12 Feb 2018

Soft Matter, 2018,14, 2077-2083

Conformational properties and the entropic barrier in the “head-on” adsorption of a single polymer chain towards a flat surface

Y. Wang, X. Shu, J. Liu and Q. Ran, Soft Matter, 2018, 14, 2077 DOI: 10.1039/C8SM00013A

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