Exact evaluation of the depletion force between nanospheres in a polydisperse polymer fluid under Θ conditions.
(2014) In Journal of Chemical Physics 140(19).- Abstract
- We analyze a system consisting of two spherical particles immersed in a polydispersed polymer solution under theta conditions. An exact theory is developed to describe the potential of mean force between the spheres for the case where the polymer molecular weight dispersity is described by the Schulz-Flory distribution. Exact results can be derived for the protein regime, where the sphere radius (Rs) is small compared to the average radius of gyration of the polymer (Rg). Numerical results are relatively easily obtained in the cases where the sphere radius is increased. We find that even when q = Rg/Rs⪆ 10, then the use of a monopole expansion for the polymer end-point distribution about the spheres is sufficient. For even larger spheres q... (More)
- We analyze a system consisting of two spherical particles immersed in a polydispersed polymer solution under theta conditions. An exact theory is developed to describe the potential of mean force between the spheres for the case where the polymer molecular weight dispersity is described by the Schulz-Flory distribution. Exact results can be derived for the protein regime, where the sphere radius (Rs) is small compared to the average radius of gyration of the polymer (Rg). Numerical results are relatively easily obtained in the cases where the sphere radius is increased. We find that even when q = Rg/Rs⪆ 10, then the use of a monopole expansion for the polymer end-point distribution about the spheres is sufficient. For even larger spheres q ≈ 1, accuracy is maintained by including a dipolar correction. The implications of these findings on generating a full many-body effective interaction for a collection of N spheres imbedded in the polymer solution are discussed. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/4452752
- author
- Wang, Haiqiang ; Woodward, Clifford E and Forsman, Jan LU
- organization
- publishing date
- 2014
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Journal of Chemical Physics
- volume
- 140
- issue
- 19
- article number
- 194903
- publisher
- American Institute of Physics (AIP)
- external identifiers
-
- pmid:24852559
- wos:000336832700038
- scopus:84901495954
- pmid:24852559
- ISSN
- 0021-9606
- DOI
- 10.1063/1.4874977
- language
- English
- LU publication?
- yes
- additional info
- The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Theoretical Chemistry (S) (011001039)
- id
- 7d05da36-bd24-49f4-91e7-b8f038df2af7 (old id 4452752)
- date added to LUP
- 2016-04-01 10:39:53
- date last changed
- 2023-01-02 06:36:45
@article{7d05da36-bd24-49f4-91e7-b8f038df2af7,
abstract = {{We analyze a system consisting of two spherical particles immersed in a polydispersed polymer solution under theta conditions. An exact theory is developed to describe the potential of mean force between the spheres for the case where the polymer molecular weight dispersity is described by the Schulz-Flory distribution. Exact results can be derived for the protein regime, where the sphere radius (Rs) is small compared to the average radius of gyration of the polymer (Rg). Numerical results are relatively easily obtained in the cases where the sphere radius is increased. We find that even when q = Rg/Rs⪆ 10, then the use of a monopole expansion for the polymer end-point distribution about the spheres is sufficient. For even larger spheres q ≈ 1, accuracy is maintained by including a dipolar correction. The implications of these findings on generating a full many-body effective interaction for a collection of N spheres imbedded in the polymer solution are discussed.}},
author = {{Wang, Haiqiang and Woodward, Clifford E and Forsman, Jan}},
issn = {{0021-9606}},
language = {{eng}},
number = {{19}},
publisher = {{American Institute of Physics (AIP)}},
series = {{Journal of Chemical Physics}},
title = {{Exact evaluation of the depletion force between nanospheres in a polydisperse polymer fluid under Θ conditions.}},
url = {{https://lup.lub.lu.se/search/files/2034218/5043422.pdf}},
doi = {{10.1063/1.4874977}},
volume = {{140}},
year = {{2014}},
}