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Interactions between single latex particles and silica surfaces studied with AFM

Engqvist, C.; Forsberg, S.; Norgren, M.; Edlund, H.; Andreasson, B. and Karlsson, Ola LU (2007) In Colloids and Surfaces A: Physicochemical and Engineering Aspects 302(1-3). p.197-203
Abstract
The spreading of single styrene-acrylic latex particles on silicon oxide C surfaces was studied using atomic force microscopy (AFM). Three latexes with different glass transition temperature (Tg) were used and the effects of temperature, time and preparation method were investigated. Particle sizes and shape were measured with AFM and the contact angles were calculated. The observed rate for the spreading of latex particles was low and it took several days before the particles reached steady state, even at temperatures well above their T-g. The experimental particle spreading results deviated with two orders of magnitude from predictions Using the WLF equation for polymer diffusion. The deviation could be attributed to polymer-surface... (More)
The spreading of single styrene-acrylic latex particles on silicon oxide C surfaces was studied using atomic force microscopy (AFM). Three latexes with different glass transition temperature (Tg) were used and the effects of temperature, time and preparation method were investigated. Particle sizes and shape were measured with AFM and the contact angles were calculated. The observed rate for the spreading of latex particles was low and it took several days before the particles reached steady state, even at temperatures well above their T-g. The experimental particle spreading results deviated with two orders of magnitude from predictions Using the WLF equation for polymer diffusion. The deviation could be attributed to polymer-surface interactions that slowed down the particle spreading. The work of adhesion was calculated using two models. The results from using the regular Young-Dupre equation and a modified version of this equation that also included the mechanical properties (E-modulus and Poisson's ratio) of the latexes, were compared. For soft latex particles the results from the two models agreed well and were of the order of 75 J/m(2), but for glassy latexes the Young-Dupre equation underestimated the work of adhesion. (C) 2007 Elsevier B.V. All rights reserved. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
surface interaction, contact angle, latex, adhesion, AFM
in
Colloids and Surfaces A: Physicochemical and Engineering Aspects
volume
302
issue
1-3
pages
197 - 203
publisher
Elsevier
external identifiers
  • wos:000247192300029
  • scopus:34248178443
ISSN
0927-7757
DOI
10.1016/j.colsurfa.2007.02.032
language
English
LU publication?
yes
id
102c1096-adee-4d89-a456-9c367a09e54d (old id 648950)
date added to LUP
2007-12-07 15:39:39
date last changed
2017-09-17 07:27:01
@article{102c1096-adee-4d89-a456-9c367a09e54d,
  abstract     = {The spreading of single styrene-acrylic latex particles on silicon oxide C surfaces was studied using atomic force microscopy (AFM). Three latexes with different glass transition temperature (Tg) were used and the effects of temperature, time and preparation method were investigated. Particle sizes and shape were measured with AFM and the contact angles were calculated. The observed rate for the spreading of latex particles was low and it took several days before the particles reached steady state, even at temperatures well above their T-g. The experimental particle spreading results deviated with two orders of magnitude from predictions Using the WLF equation for polymer diffusion. The deviation could be attributed to polymer-surface interactions that slowed down the particle spreading. The work of adhesion was calculated using two models. The results from using the regular Young-Dupre equation and a modified version of this equation that also included the mechanical properties (E-modulus and Poisson's ratio) of the latexes, were compared. For soft latex particles the results from the two models agreed well and were of the order of 75 J/m(2), but for glassy latexes the Young-Dupre equation underestimated the work of adhesion. (C) 2007 Elsevier B.V. All rights reserved.},
  author       = {Engqvist, C. and Forsberg, S. and Norgren, M. and Edlund, H. and Andreasson, B. and Karlsson, Ola},
  issn         = {0927-7757},
  keyword      = {surface interaction,contact angle,latex,adhesion,AFM},
  language     = {eng},
  number       = {1-3},
  pages        = {197--203},
  publisher    = {Elsevier},
  series       = {Colloids and Surfaces A: Physicochemical and Engineering Aspects},
  title        = {Interactions between single latex particles and silica surfaces studied with AFM},
  url          = {http://dx.doi.org/10.1016/j.colsurfa.2007.02.032},
  volume       = {302},
  year         = {2007},
}