Martin, J. I. and Wang, Z.-G. and Zuckerman, D. and Bruinsma, R. and Pincus, P. (1997) Forces between Surfaces with Weakly End-Adsorbed Polymers. Journal de Physique II, 7 (8). pp. 1111-1121. ISSN 1155-4312. doi:10.1051/jp2:1997175. https://resolver.caltech.edu/CaltechAUTHORS:20200320-144002936
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Abstract
We study the interaction forces between two plates in a semi-dilute solution of polymers each having one weakly adsorbing end-group. We show that this system exhibits both repulsive and attractive interactions of comparable magnitude and well-separated length scales: when the plate separation is within a range of order the end-to-end distance of the end-adsorbed polymer, repulsion arises with a magnitude of ϵ Φ/Na³ where ϵ is the end-adsorption energy, N is the degree of polymerization, a is the Kuhn length and Φ the volume fraction of the polymer. This repulsion is due to desorption of the end-adsorbed chains. At plate separations of order the correlation length of the solution, a depletion attraction sets in with a magnitude that scales with the bulk osmotic pressure.
| Item Type: | Article | ||||||
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| Additional Information: | © 1997 Les Editions de Physique. Received 9 October 1996, revised 10 April 1997, accepted 22 April 1997. | ||||||
| Issue or Number: | 8 | ||||||
| DOI: | 10.1051/jp2:1997175 | ||||||
| Record Number: | CaltechAUTHORS:20200320-144002936 | ||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20200320-144002936 | ||||||
| Official Citation: | Forces between Surfaces with Weakly End-Adsorbed Polymers. J.I. Martin, Z.-G. Wang, D. Zuckerman, R. Bruinsma et P. Pincus. J. Phys. II France, 7 8 (1997) 1111-1121 DOI: https://doi.org/10.1051/jp2:1997175 | ||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||
| ID Code: | 102032 | ||||||
| Collection: | CaltechAUTHORS | ||||||
| Deposited By: | Tony Diaz | ||||||
| Deposited On: | 20 Mar 2020 23:27 | ||||||
| Last Modified: | 16 Nov 2021 18:08 |
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