Skip to main content

Local entropic effects of polymers grafted to soft interfaces

Abstract:

In this paper, we study the equilibrium properties of polymer chains end-tethered to a fluid membrane. The loss of conformational entropy of the polymer results in an inhomogeneous pressure field that we calculate for Gaussian chains. We estimate the effects of excluded volume through a relation between pressure and concentration. Under the polymer pressure, a soft surface will deform. We calculate the deformation profile for a fluid membrane and show that close to the grafting point, this profile assumes a cone-like shape, independently of the boundary conditions. Interactions between different polymers are also mediated by the membrane deformation. This pair-additive potential is attractive for chains grafted on the same side of the membrane and repulsive otherwise.

This is a preview of subscription content, access via your institution.

Author information

Authors and Affiliations

Authors

Additional information

Received 20 April 2000

Rights and permissions

Reprints and Permissions

About this article

Cite this article

Bickel, T., Jeppesen, C. & Marques, C. Local entropic effects of polymers grafted to soft interfaces. Eur. Phys. J. E 4, 33–43 (2001). https://doi.org/10.1007/s101890170140

Download citation

  • Issue Date:

  • DOI: https://doi.org/10.1007/s101890170140

  • PACS. 36.20.-r Macromolecules and polymer molecules - 87.15.He Dynamics and conformational changes - 87.16.Dg Membranes, bilayers, and vesicles.