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Competitive adsorption of a polydisperse polymer during emulsification: Experiments and modeling

Nilsson, Lars LU ; Leeman, Mats LU ; Wahlund, Karl-Gustav LU and Bergenståhl, Björn LU (2007) In Langmuir 23(5). p.2346-2351
Abstract
In this paper we study the selective adsorption of a high molar mass polymer, OSA-starch, at the cyclohexane/water interface during emulsification. This was made possible through the use of AsFlFFF-MALS-RI which enables us to characterize the size and molar mass of polydisperse ultrahigh molar mass polymers. The results show that the high molar mass components in the molar mass distribution of the polymer were selectively adsorbed. The selective adsorption is most likely due to convective mass transport in the turbulent flow fields, during formation of the emulsion, which favors transport to the interface of the high molar mass polymers in the sample. The rapid adsorption that occurs during emulsification is likely to give rise to... (More)
In this paper we study the selective adsorption of a high molar mass polymer, OSA-starch, at the cyclohexane/water interface during emulsification. This was made possible through the use of AsFlFFF-MALS-RI which enables us to characterize the size and molar mass of polydisperse ultrahigh molar mass polymers. The results show that the high molar mass components in the molar mass distribution of the polymer were selectively adsorbed. The selective adsorption is most likely due to convective mass transport in the turbulent flow fields, during formation of the emulsion, which favors transport to the interface of the high molar mass polymers in the sample. The rapid adsorption that occurs during emulsification is likely to give rise to nonequilibrium effects and jamming at the interface. Furthermore, we describe the adsorption process and illustrate its selective nature through a turbulent flow collision model. (Less)
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author
; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Adsorption, Emulsions, OSA Starch
in
Langmuir
volume
23
issue
5
pages
2346 - 2351
publisher
The American Chemical Society (ACS)
external identifiers
  • wos:000244248700019
  • scopus:33847767183
ISSN
0743-7463
DOI
10.1021/la062483b
project
CAP
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: Analytical Chemistry (S/LTH) (011001004), Department of Food Technology (011001210), Food Technology (011001017)
id
81e8c49a-9c34-43a7-83af-69290d7b9b4b (old id 584762)
date added to LUP
2016-04-01 11:46:33
date last changed
2020-07-15 01:49:37
@article{81e8c49a-9c34-43a7-83af-69290d7b9b4b,
  abstract     = {In this paper we study the selective adsorption of a high molar mass polymer, OSA-starch, at the cyclohexane/water interface during emulsification. This was made possible through the use of AsFlFFF-MALS-RI which enables us to characterize the size and molar mass of polydisperse ultrahigh molar mass polymers. The results show that the high molar mass components in the molar mass distribution of the polymer were selectively adsorbed. The selective adsorption is most likely due to convective mass transport in the turbulent flow fields, during formation of the emulsion, which favors transport to the interface of the high molar mass polymers in the sample. The rapid adsorption that occurs during emulsification is likely to give rise to nonequilibrium effects and jamming at the interface. Furthermore, we describe the adsorption process and illustrate its selective nature through a turbulent flow collision model.},
  author       = {Nilsson, Lars and Leeman, Mats and Wahlund, Karl-Gustav and Bergenståhl, Björn},
  issn         = {0743-7463},
  language     = {eng},
  number       = {5},
  pages        = {2346--2351},
  publisher    = {The American Chemical Society (ACS)},
  series       = {Langmuir},
  title        = {Competitive adsorption of a polydisperse polymer during emulsification: Experiments and modeling},
  url          = {http://dx.doi.org/10.1021/la062483b},
  doi          = {10.1021/la062483b},
  volume       = {23},
  year         = {2007},
}