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Polydisperse Telechelic Polymers at Interfaces: Analytic Results and Density Functional Theory

Forsman, Jan LU and Woodward, Clifford E. (2012) In Langmuir 28(9). p.4223-4232
Abstract
We use a recently developed continuum theory to expand on an exact treatment of the interfacial properties of telechelic polymers displaying Schulz-Flory polydispersity. Our results are remarkably compact and can be derived from the properties of equilibrium, ideal polymers at interfaces. A new surface adsorption transition is identified for ideal telechelic chains, wherein the central block is an equilibrium polymer. This transition occurs in the limit of strong end adsorption. Additionally, closed expressions are derived for the ideal continuum telechelic chain in contact with two large spheres, using the Derjaguin approximation. We analyze the interactions between colloids as a function of polydispersity and molecular weight, and the... (More)
We use a recently developed continuum theory to expand on an exact treatment of the interfacial properties of telechelic polymers displaying Schulz-Flory polydispersity. Our results are remarkably compact and can be derived from the properties of equilibrium, ideal polymers at interfaces. A new surface adsorption transition is identified for ideal telechelic chains, wherein the central block is an equilibrium polymer. This transition occurs in the limit of strong end adsorption. Additionally, closed expressions are derived for the ideal continuum telechelic chain in contact with two large spheres, using the Derjaguin approximation. We analyze the interactions between colloids as a function of polydispersity and molecular weight, and the results are compared with polymer density functional theory in the dilute limit. Significant variations in polymer mediated forces are observed as a function of polydispersity, molecuar weight, and chain stiffness. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Langmuir
volume
28
issue
9
pages
4223 - 4232
publisher
The American Chemical Society
external identifiers
  • wos:000301038000023
  • scopus:84857892285
ISSN
0743-7463
DOI
10.1021/la204576q
language
English
LU publication?
yes
id
b70f7387-1edc-4d04-9375-63fa273633f6 (old id 2517069)
date added to LUP
2012-05-09 13:17:53
date last changed
2017-02-26 03:06:13
@article{b70f7387-1edc-4d04-9375-63fa273633f6,
  abstract     = {We use a recently developed continuum theory to expand on an exact treatment of the interfacial properties of telechelic polymers displaying Schulz-Flory polydispersity. Our results are remarkably compact and can be derived from the properties of equilibrium, ideal polymers at interfaces. A new surface adsorption transition is identified for ideal telechelic chains, wherein the central block is an equilibrium polymer. This transition occurs in the limit of strong end adsorption. Additionally, closed expressions are derived for the ideal continuum telechelic chain in contact with two large spheres, using the Derjaguin approximation. We analyze the interactions between colloids as a function of polydispersity and molecular weight, and the results are compared with polymer density functional theory in the dilute limit. Significant variations in polymer mediated forces are observed as a function of polydispersity, molecuar weight, and chain stiffness.},
  author       = {Forsman, Jan and Woodward, Clifford E.},
  issn         = {0743-7463},
  language     = {eng},
  number       = {9},
  pages        = {4223--4232},
  publisher    = {The American Chemical Society},
  series       = {Langmuir},
  title        = {Polydisperse Telechelic Polymers at Interfaces: Analytic Results and Density Functional Theory},
  url          = {http://dx.doi.org/10.1021/la204576q},
  volume       = {28},
  year         = {2012},
}