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Vesicle formation and other structures in aqueous dispersios of monoolein and sodium oleate

Borné, Johanna LU ; Nylander, Tommy LU and Khan, Ali LU (2003) In Journal of Colloid and Interface Science 257(2). p.310-320
Abstract
The macroscopic appearance and microstructure in the dilute corner of the ternary monoolein (MO)-sodium oleate (NaO)-water ((H2O)-H-2) system have been investigated by visual inspection and by using direct structural imaging with light microscopy and cryogenic transmission electron microscopy. The microstructural transformations that take place between the micellar phase (binary NaO-(H2O)-H-2 axis) and the dispersed cubic phase (binary MO-(H2O)-H-2 axis) upon increasing the ratio of MO to NaO are micelles, ruptured multilamellar vesicles together with flexible threads, various vesicle structures, vesicles in equilibrium with densely packed layers that either represent bilayers or domains of H-

I tubes visible from the side, and... (More)
The macroscopic appearance and microstructure in the dilute corner of the ternary monoolein (MO)-sodium oleate (NaO)-water ((H2O)-H-2) system have been investigated by visual inspection and by using direct structural imaging with light microscopy and cryogenic transmission electron microscopy. The microstructural transformations that take place between the micellar phase (binary NaO-(H2O)-H-2 axis) and the dispersed cubic phase (binary MO-(H2O)-H-2 axis) upon increasing the ratio of MO to NaO are micelles, ruptured multilamellar vesicles together with flexible threads, various vesicle structures, vesicles in equilibrium with densely packed layers that either represent bilayers or domains of H-

I tubes visible from the side, and finally a pattern that may be either a cubic

phase or domains of HII tubes visible in a cross section. Spontaneously

formed uni- and multilamellar vesicles that show long-term stability

are found to be the dominant structure for mixed dispersions over

almost the entire concentration range. The addition of NaOH to the

non-bilayer-forming system, the ternary MO-OA (oleic acid)-(H2O)-H-2

system, leads to the fort-nation of vesicles. Vesicles were also

observed in other ternary MO-aqueous-based systems with potassium

oleate, cetyltrimethylammonium bromide, sodium taurodeoxycholate, or

dipalmitoylphosphatidylcholine instead of NaO. (C) 2003 Elsevier

Science (USA). All rights reserved. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Colloid and Interface Science
volume
257
issue
2
pages
310 - 320
publisher
Elsevier
external identifiers
  • wos:000180947700017
  • scopus:0037440359
ISSN
1095-7103
DOI
language
English
LU publication?
yes
id
163daa43-a191-4d16-9d21-ea220aa024af (old id 121949)
date added to LUP
2007-07-11 08:10:42
date last changed
2018-05-29 10:47:09
@article{163daa43-a191-4d16-9d21-ea220aa024af,
  abstract     = {The macroscopic appearance and microstructure in the dilute corner of the ternary monoolein (MO)-sodium oleate (NaO)-water ((H2O)-H-2) system have been investigated by visual inspection and by using direct structural imaging with light microscopy and cryogenic transmission electron microscopy. The microstructural transformations that take place between the micellar phase (binary NaO-(H2O)-H-2 axis) and the dispersed cubic phase (binary MO-(H2O)-H-2 axis) upon increasing the ratio of MO to NaO are micelles, ruptured multilamellar vesicles together with flexible threads, various vesicle structures, vesicles in equilibrium with densely packed layers that either represent bilayers or domains of H-<br/><br>
I tubes visible from the side, and finally a pattern that may be either a cubic<br/><br>
	phase or domains of HII tubes visible in a cross section. Spontaneously<br/><br>
	formed uni- and multilamellar vesicles that show long-term stability<br/><br>
	are found to be the dominant structure for mixed dispersions over<br/><br>
	almost the entire concentration range. The addition of NaOH to the<br/><br>
	non-bilayer-forming system, the ternary MO-OA (oleic acid)-(H2O)-H-2<br/><br>
	system, leads to the fort-nation of vesicles. Vesicles were also<br/><br>
	observed in other ternary MO-aqueous-based systems with potassium<br/><br>
	oleate, cetyltrimethylammonium bromide, sodium taurodeoxycholate, or<br/><br>
	dipalmitoylphosphatidylcholine instead of NaO. (C) 2003 Elsevier<br/><br>
	Science (USA). All rights reserved.},
  author       = {Borné, Johanna and Nylander, Tommy and Khan, Ali},
  issn         = {1095-7103},
  language     = {eng},
  number       = {2},
  pages        = {310--320},
  publisher    = {Elsevier},
  series       = {Journal of Colloid and Interface Science},
  title        = {Vesicle formation and other structures in aqueous dispersios of monoolein and sodium oleate},
  url          = {http://dx.doi.org/},
  volume       = {257},
  year         = {2003},
}