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Simulations of latex particles immersed in dendrimer solutions.

Trulsson, Martin LU orcid ; Forsman, Jan LU ; Åkesson, Torbjörn LU and Jönsson, Bo LU (2009) In Langmuir 25(11). p.6106-6112
Abstract
In this work, we present Monte Carlo simulations of mixtures containing negatively charged latex particles and positively charged dendrimers. We focus on the interaction between two latex particles as salt concentration, dendrimer dose, and generation number are varied. Interaction free energies and corresponding stability ratios are calculated. Minimal stability is found near the isoelectric point, i.e., where the amount of adsorbed dendrimer charge matches the charge of the latex particles. Away from the isoelectric point, the stability increases as the latex particles get more and more under- or overcompensated, an increase that is more steep on the overcompensated side. Increasing the dendrimer generation leads to a more "patchy"... (More)
In this work, we present Monte Carlo simulations of mixtures containing negatively charged latex particles and positively charged dendrimers. We focus on the interaction between two latex particles as salt concentration, dendrimer dose, and generation number are varied. Interaction free energies and corresponding stability ratios are calculated. Minimal stability is found near the isoelectric point, i.e., where the amount of adsorbed dendrimer charge matches the charge of the latex particles. Away from the isoelectric point, the stability increases as the latex particles get more and more under- or overcompensated, an increase that is more steep on the overcompensated side. Increasing the dendrimer generation leads to a more "patchy" surface. This heterogeneity is particularly relevant close to the isoelectric point. Given the relative simplicity of the model, the simulation results are in surprisingly good agreement with the experimental data. (Less)
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author
; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Langmuir
volume
25
issue
11
pages
6106 - 6112
publisher
The American Chemical Society (ACS)
external identifiers
  • wos:000266604000019
  • pmid:19466775
  • scopus:66749146672
  • pmid:19466775
ISSN
0743-7463
DOI
10.1021/la900102r
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
ba4d5d86-c670-436c-abec-77515e5f99a2 (old id 1412044)
date added to LUP
2016-04-01 12:37:16
date last changed
2021-03-24 03:39:16
@article{ba4d5d86-c670-436c-abec-77515e5f99a2,
  abstract     = {In this work, we present Monte Carlo simulations of mixtures containing negatively charged latex particles and positively charged dendrimers. We focus on the interaction between two latex particles as salt concentration, dendrimer dose, and generation number are varied. Interaction free energies and corresponding stability ratios are calculated. Minimal stability is found near the isoelectric point, i.e., where the amount of adsorbed dendrimer charge matches the charge of the latex particles. Away from the isoelectric point, the stability increases as the latex particles get more and more under- or overcompensated, an increase that is more steep on the overcompensated side. Increasing the dendrimer generation leads to a more "patchy" surface. This heterogeneity is particularly relevant close to the isoelectric point. Given the relative simplicity of the model, the simulation results are in surprisingly good agreement with the experimental data.},
  author       = {Trulsson, Martin and Forsman, Jan and Åkesson, Torbjörn and Jönsson, Bo},
  issn         = {0743-7463},
  language     = {eng},
  number       = {11},
  pages        = {6106--6112},
  publisher    = {The American Chemical Society (ACS)},
  series       = {Langmuir},
  title        = {Simulations of latex particles immersed in dendrimer solutions.},
  url          = {http://dx.doi.org/10.1021/la900102r},
  doi          = {10.1021/la900102r},
  volume       = {25},
  year         = {2009},
}