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Spreading Dynamics of a Functionalized Polymer Latex.

Kisbye Dreyer, Jakob LU ; Nylander, Tommy LU ; Karlsson, Ola LU and Piculell, Lennart LU (2011) In ACS Applied Materials and Interfaces 3. p.167-176
Abstract
Functionalized polymer nanoparticles are used as binders for inorganic materials in everyday technologies such as paper and coatings. However, the functionalization can give rise to two opposing effects: It can promote adhesion via specific interactions to the substrate, but a high degree of functionalization can also hamper spreading on substrates. Here, we studied the spreading kinetics of individual functionalized vinyl acetate-co-ethylene polymer nanoparticles on inorganic substrates by atomic force microscopy (AFM) imaging. We found that the kinetics underwent a transition from a fast initial regime to a slower regime. The transition was independent of functionalization of the particles but depended on the wettability of the... (More)
Functionalized polymer nanoparticles are used as binders for inorganic materials in everyday technologies such as paper and coatings. However, the functionalization can give rise to two opposing effects: It can promote adhesion via specific interactions to the substrate, but a high degree of functionalization can also hamper spreading on substrates. Here, we studied the spreading kinetics of individual functionalized vinyl acetate-co-ethylene polymer nanoparticles on inorganic substrates by atomic force microscopy (AFM) imaging. We found that the kinetics underwent a transition from a fast initial regime to a slower regime. The transition was independent of functionalization of the particles but depended on the wettability of the substrate. Furthermore, the transition from the fast regime to the slow regime occurred at a size-dependent contact angle, leading to a h ∼ a(3/2) scaling dependence between the height (h) and the width (a) of the spreading particles. Thereafter, spreading continued on a slower time scale. In the slow regime, the kinetics was blocked by a high degree of functionalization. We interpret the observations in terms of a nanoscale stick-slip transition occurring at interface stress around 6 kPa. We develop models that describe the scaling relations between the particle height and width on different substrates. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
ACS Applied Materials and Interfaces
volume
3
pages
167 - 176
publisher
The American Chemical Society
external identifiers
  • wos:000287639400013
  • pmid:21247071
  • scopus:84857779315
ISSN
1944-8244
DOI
10.1021/am1007694
language
English
LU publication?
yes
id
8672e7e3-22e0-4cb1-89f1-cbf17ec0657d (old id 1777309)
date added to LUP
2011-02-10 17:09:58
date last changed
2017-08-20 03:16:47
@article{8672e7e3-22e0-4cb1-89f1-cbf17ec0657d,
  abstract     = {Functionalized polymer nanoparticles are used as binders for inorganic materials in everyday technologies such as paper and coatings. However, the functionalization can give rise to two opposing effects: It can promote adhesion via specific interactions to the substrate, but a high degree of functionalization can also hamper spreading on substrates. Here, we studied the spreading kinetics of individual functionalized vinyl acetate-co-ethylene polymer nanoparticles on inorganic substrates by atomic force microscopy (AFM) imaging. We found that the kinetics underwent a transition from a fast initial regime to a slower regime. The transition was independent of functionalization of the particles but depended on the wettability of the substrate. Furthermore, the transition from the fast regime to the slow regime occurred at a size-dependent contact angle, leading to a h ∼ a(3/2) scaling dependence between the height (h) and the width (a) of the spreading particles. Thereafter, spreading continued on a slower time scale. In the slow regime, the kinetics was blocked by a high degree of functionalization. We interpret the observations in terms of a nanoscale stick-slip transition occurring at interface stress around 6 kPa. We develop models that describe the scaling relations between the particle height and width on different substrates.},
  author       = {Kisbye Dreyer, Jakob and Nylander, Tommy and Karlsson, Ola and Piculell, Lennart},
  issn         = {1944-8244},
  language     = {eng},
  pages        = {167--176},
  publisher    = {The American Chemical Society},
  series       = {ACS Applied Materials and Interfaces},
  title        = {Spreading Dynamics of a Functionalized Polymer Latex.},
  url          = {http://dx.doi.org/10.1021/am1007694},
  volume       = {3},
  year         = {2011},
}