Transport properties of alternative fuel microemulsions based on sugar surfactant
(2017) In Journal of Dispersion Science and Technology 38(7). p.917-922- Abstract
Electrical conductivity of fuel microemulsion composed of diesel, pentanol, water, and sucrose laurate as surfactant was investigated over a wide range of water contents varying from 0 to 90 wt% and temperature varying from 10°C to 50°C. Conductivity measurements were performed on samples, the composition of which lie along the one-phase channel using a conductivity meter. Activation energy of conduction flow was evaluated. The hydrodynamic radius as a function of temperature in the aqueous phase-rich region (90 wt%) was measured using the dynamic light scattering (DLS) method. The microstructure of the microemulsion was further investigated by NMR diffusometry by which the self-diffusion coefficients for water were determined at 25°C.... (More)
Electrical conductivity of fuel microemulsion composed of diesel, pentanol, water, and sucrose laurate as surfactant was investigated over a wide range of water contents varying from 0 to 90 wt% and temperature varying from 10°C to 50°C. Conductivity measurements were performed on samples, the composition of which lie along the one-phase channel using a conductivity meter. Activation energy of conduction flow was evaluated. The hydrodynamic radius as a function of temperature in the aqueous phase-rich region (90 wt%) was measured using the dynamic light scattering (DLS) method. The microstructure of the microemulsion was further investigated by NMR diffusometry by which the self-diffusion coefficients for water were determined at 25°C. Electrical conductivity increases with water content up to 40 wt% and the percolation threshold was observed, and then stabilizes between 40 and 80 wt% then decreases. Percolation threshold temperature at constant composition was monitored as 36°C for water contents below 80 wt% and as 34°C for water contents above that. As predicted by the conductivity measurements, the determined self-diffusion coefficients of water confirmed the structural transition from discrete W/O droplets to bi-continuous phase and finally to O/W droplet microemulsion.
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- author
- Kayali, Ibrahim ; Qamhieh, Khawla ; Fanun, Monzer ; Wadaah, Salam ; Kunhatta, Jyothi Chembolli and Kanan, Khalid
- publishing date
- 2017
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Fuel microemulsion, microstructure, percolation temperature, sugar surfactant
- in
- Journal of Dispersion Science and Technology
- volume
- 38
- issue
- 7
- pages
- 6 pages
- publisher
- Taylor & Francis
- external identifiers
-
- scopus:85008467900
- ISSN
- 0193-2691
- DOI
- 10.1080/01932691.2016.1215924
- language
- English
- LU publication?
- no
- id
- 9f9f5307-fda7-42a1-b7a5-fa9de3ff1995
- date added to LUP
- 2020-04-23 11:49:20
- date last changed
- 2022-04-18 22:17:19
@article{9f9f5307-fda7-42a1-b7a5-fa9de3ff1995,
abstract = {{<p>Electrical conductivity of fuel microemulsion composed of diesel, pentanol, water, and sucrose laurate as surfactant was investigated over a wide range of water contents varying from 0 to 90 wt% and temperature varying from 10°C to 50°C. Conductivity measurements were performed on samples, the composition of which lie along the one-phase channel using a conductivity meter. Activation energy of conduction flow was evaluated. The hydrodynamic radius as a function of temperature in the aqueous phase-rich region (90 wt%) was measured using the dynamic light scattering (DLS) method. The microstructure of the microemulsion was further investigated by NMR diffusometry by which the self-diffusion coefficients for water were determined at 25°C. Electrical conductivity increases with water content up to 40 wt% and the percolation threshold was observed, and then stabilizes between 40 and 80 wt% then decreases. Percolation threshold temperature at constant composition was monitored as 36°C for water contents below 80 wt% and as 34°C for water contents above that. As predicted by the conductivity measurements, the determined self-diffusion coefficients of water confirmed the structural transition from discrete W/O droplets to bi-continuous phase and finally to O/W droplet microemulsion.</p>}},
author = {{Kayali, Ibrahim and Qamhieh, Khawla and Fanun, Monzer and Wadaah, Salam and Kunhatta, Jyothi Chembolli and Kanan, Khalid}},
issn = {{0193-2691}},
keywords = {{Fuel microemulsion; microstructure; percolation temperature; sugar surfactant}},
language = {{eng}},
number = {{7}},
pages = {{917--922}},
publisher = {{Taylor & Francis}},
series = {{Journal of Dispersion Science and Technology}},
title = {{Transport properties of alternative fuel microemulsions based on sugar surfactant}},
url = {{http://dx.doi.org/10.1080/01932691.2016.1215924}},
doi = {{10.1080/01932691.2016.1215924}},
volume = {{38}},
year = {{2017}},
}