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Effects of polymer stiffness on surface tension and pressure in confinement (2015)

Andrey Milchev

American Institute of Physics (AIP)

In: Journal of Chemical Physics

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Publication Date: 2015-08-11

Description: We study the effect of chain rigidity on the behavior of semiflexible polymers in the vicinity of flat walls in a slit, and of surfactants at the liquid-liquid interface between immiscible liquids. Using molecular dynamics simulations, it is demonstrated that the impact of bending angle forces is particularly strong within the depletion layer at the phase boundary whereas at distance R e away from the interface, where R e is the mean distance between the ends of a semiflexible chain, the contribution of these non-local triplet interactions to pressure tensor virtually disappears. The present study also demonstrates that growing stiffness of the macromolecules leads to an increase in surface tension and total pressure.

Print ISSN: 0021-9606

Electronic ISSN: 1089-7690

Topics: Chemistry and Pharmacology , Physics

Published by American Institute of Physics (AIP)

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