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Hydrophobically modified ethyl(hydroxyethyl)cellulose as stabilizer and emulsifying agent in macroemulsions

Karlberg, Maria LU ; Thuresson, Krister LU and Lindman, Björn LU (2005) In Colloids and Surfaces A: Physicochemical and Engineering Aspects 262(1-3). p.158-167
Abstract
Stability, droplet diameter and viscosity of o/w macroemulsions of olive oil stabilized with lecithin from soybean and different types of polymers have been investigated. The stabilizing polymers were non-ionic cellulose ethers, both with and without hydrophobic groups grafted onto the polymer backbone. Emulsions without polymers showed essentially no stability against creaming. Unmodified polymers provided limited stability, while hydrophobically modified versions of the polymers improved the stability dramatically. The viscosity of emulsions stabilized by hydrophobically modified polymers was significantly increased compared with aqueous solutions of the polymers alone, suggesting network formation including both polymers and emulsion... (More)
Stability, droplet diameter and viscosity of o/w macroemulsions of olive oil stabilized with lecithin from soybean and different types of polymers have been investigated. The stabilizing polymers were non-ionic cellulose ethers, both with and without hydrophobic groups grafted onto the polymer backbone. Emulsions without polymers showed essentially no stability against creaming. Unmodified polymers provided limited stability, while hydrophobically modified versions of the polymers improved the stability dramatically. The viscosity of emulsions stabilized by hydrophobically modified polymers was significantly increased compared with aqueous solutions of the polymers alone, suggesting network formation including both polymers and emulsion droplets. It was also found that dilution had virtually no effect on the droplet diameters of emulsions stabilized with hydrophobically modified cellulose ethers and that coalescence was effectively opposed. (c) 2005 Elsevier B.V. All rights reserved. (Less)
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author
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type
Contribution to journal
publication status
published
subject
in
Colloids and Surfaces A: Physicochemical and Engineering Aspects
volume
262
issue
1-3
pages
158 - 167
publisher
Elsevier
external identifiers
  • wos:000231137000022
  • scopus:22044451174
ISSN
0927-7757
DOI
10.1016/j.colsurfa.2005.04.026
language
English
LU publication?
yes
id
b73fd291-a385-471e-96e2-c38f8b8185b3 (old id 157420)
date added to LUP
2007-07-11 13:46:13
date last changed
2017-07-30 04:41:30
@article{b73fd291-a385-471e-96e2-c38f8b8185b3,
  abstract     = {Stability, droplet diameter and viscosity of o/w macroemulsions of olive oil stabilized with lecithin from soybean and different types of polymers have been investigated. The stabilizing polymers were non-ionic cellulose ethers, both with and without hydrophobic groups grafted onto the polymer backbone. Emulsions without polymers showed essentially no stability against creaming. Unmodified polymers provided limited stability, while hydrophobically modified versions of the polymers improved the stability dramatically. The viscosity of emulsions stabilized by hydrophobically modified polymers was significantly increased compared with aqueous solutions of the polymers alone, suggesting network formation including both polymers and emulsion droplets. It was also found that dilution had virtually no effect on the droplet diameters of emulsions stabilized with hydrophobically modified cellulose ethers and that coalescence was effectively opposed. (c) 2005 Elsevier B.V. All rights reserved.},
  author       = {Karlberg, Maria and Thuresson, Krister and Lindman, Björn},
  issn         = {0927-7757},
  language     = {eng},
  number       = {1-3},
  pages        = {158--167},
  publisher    = {Elsevier},
  series       = {Colloids and Surfaces A: Physicochemical and Engineering Aspects},
  title        = {Hydrophobically modified ethyl(hydroxyethyl)cellulose as stabilizer and emulsifying agent in macroemulsions},
  url          = {http://dx.doi.org/10.1016/j.colsurfa.2005.04.026},
  volume       = {262},
  year         = {2005},
}