Water-Diesel Microemulsions Stabilized by an Anionic Extended Surfactant and a Cationic Hydrotrope
(2012) In Journal of Dispersion Science and Technology 33(4). p.516-520- Abstract
- Alcohol-free microemulsions were formulated using mixtures of extended surfactant (C12-14-PO14-EO2SO4Na), sodium dodecyl benzene sulfonic acid and cationic hydrotropes with equal amounts of water and diesel. The cationic hydrotropes had short hydrocarbon or propylene oxide chain. The formulation included sodium carbonate to convert naphthenic acids in diesel to soaps. The phase behavior at ambient temperature of oil-free mixtures as a function of NaCl concentration was investigated. Visual inspection as well as cross polarizers were used to detect anisotropy. The microemulsion fish phase diagram and solubilization ratios for diesel and brine in the middle phases were determined. The minimum surfactant concentration needed to initiate... (More)
- Alcohol-free microemulsions were formulated using mixtures of extended surfactant (C12-14-PO14-EO2SO4Na), sodium dodecyl benzene sulfonic acid and cationic hydrotropes with equal amounts of water and diesel. The cationic hydrotropes had short hydrocarbon or propylene oxide chain. The formulation included sodium carbonate to convert naphthenic acids in diesel to soaps. The phase behavior at ambient temperature of oil-free mixtures as a function of NaCl concentration was investigated. Visual inspection as well as cross polarizers were used to detect anisotropy. The microemulsion fish phase diagram and solubilization ratios for diesel and brine in the middle phases were determined. The minimum surfactant concentration needed to initiate middle phase formation was 0.10 wt%. Salinity scans revealed that optimal salinity can be adjusted according to the hydrophilic/lipophilic nature of the hydrotrope used. Interfacial tension measurements using a spinning drop tensiometer showed a minimum value of 0.0015 mN/m between middle phase microemulsion and excess brine and a value of 0.032 mN/m between diesel and brine. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/2562896
- author
- Kayali, Ibrahim ; Qamhieh, Khawla ; Olsson, Ulf LU ; Bemert, Lada and Strey, Reinhard
- organization
- publishing date
- 2012
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Cationic and anionic surfactants, extended surfactant, middle phase, microemulsions, ultra low interfacial tension
- in
- Journal of Dispersion Science and Technology
- volume
- 33
- issue
- 4
- pages
- 516 - 520
- publisher
- Taylor & Francis
- external identifiers
-
- wos:000303571500008
- scopus:84859643009
- ISSN
- 0193-2691
- DOI
- 10.1080/01932691.2011.574924
- language
- English
- LU publication?
- yes
- id
- 450931c9-20b0-4ed4-be11-35bd7ef22f3f (old id 2562896)
- date added to LUP
- 2016-04-01 15:01:47
- date last changed
- 2022-01-28 03:43:08
@article{450931c9-20b0-4ed4-be11-35bd7ef22f3f,
abstract = {{Alcohol-free microemulsions were formulated using mixtures of extended surfactant (C12-14-PO14-EO2SO4Na), sodium dodecyl benzene sulfonic acid and cationic hydrotropes with equal amounts of water and diesel. The cationic hydrotropes had short hydrocarbon or propylene oxide chain. The formulation included sodium carbonate to convert naphthenic acids in diesel to soaps. The phase behavior at ambient temperature of oil-free mixtures as a function of NaCl concentration was investigated. Visual inspection as well as cross polarizers were used to detect anisotropy. The microemulsion fish phase diagram and solubilization ratios for diesel and brine in the middle phases were determined. The minimum surfactant concentration needed to initiate middle phase formation was 0.10 wt%. Salinity scans revealed that optimal salinity can be adjusted according to the hydrophilic/lipophilic nature of the hydrotrope used. Interfacial tension measurements using a spinning drop tensiometer showed a minimum value of 0.0015 mN/m between middle phase microemulsion and excess brine and a value of 0.032 mN/m between diesel and brine.}},
author = {{Kayali, Ibrahim and Qamhieh, Khawla and Olsson, Ulf and Bemert, Lada and Strey, Reinhard}},
issn = {{0193-2691}},
keywords = {{Cationic and anionic surfactants; extended surfactant; middle phase; microemulsions; ultra low interfacial tension}},
language = {{eng}},
number = {{4}},
pages = {{516--520}},
publisher = {{Taylor & Francis}},
series = {{Journal of Dispersion Science and Technology}},
title = {{Water-Diesel Microemulsions Stabilized by an Anionic Extended Surfactant and a Cationic Hydrotrope}},
url = {{http://dx.doi.org/10.1080/01932691.2011.574924}},
doi = {{10.1080/01932691.2011.574924}},
volume = {{33}},
year = {{2012}},
}