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PubMed Publications| Keyword search (4,163 papers available) |  |
"Ghannam MT" Authored Publications:
| Title | Authors | PubMed ID | |
|---|---|---|---|
| 1 | Rheological Assessment of Oil-Xanthan Emulsions in Terms of Complex, Storage, and Loss Moduli | Ghannam MT; Selim MYE; Zekri AY; Esmail N; | 36679350 ENCS |
| Title: | Rheological Assessment of Oil-Xanthan Emulsions in Terms of Complex, Storage, and Loss Moduli | ||||
| Authors: | Ghannam MT, Selim MYE, Zekri AY, Esmail N | ||||
| Link: | https://pubmed.ncbi.nlm.nih.gov/36679350/ | ||||
| DOI: | 10.3390/polym15020470 | ||||
| Publication: | Polymers | ||||
| Keywords: | complex modulus; crude oil; loss modulus; storage modulus; xanthan gums; | ||||
| PMID: | 36679350 | Category: | Date Added: | 2023-01-21 | |
| Dept Affiliation: |
ENCS
1 Department of Chemical and Petroleum Engineering, Faculty of Engineering, United Arab Emirates University, Al-Ain 15551, United Arab Emirates. 2 Department of Mechanical Engineering, Faculty of Engineering, United Arab Emirates University, Al-Ain 15551, United Arab Emirates. 3 Department of Mechanical Engineering, Concordia University, 1455 de Maisonneuve Boulevard W., Montreal, QC M3G 1M8, Canada. |
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Description: |
This experimental assessment was carried out to study the viscoelastic performance of crude oil-xanthan emulsions employing a RheoStress RS100 rheometer. Crude oil with a concentration range of 0-75% by volume was used to prepare the oil-gum emulsions. Two xanthan gums of Sigma and Kelzan were added in the emulsions with concentration ranges of 0-104 ppm. The linear viscoelastic ranges of all the tested oil-gum emulsions were found in the range of 0.1-10 Pa. Thus, the experimental tests were completed within the linear viscoelastic range of 1 Pa. The complex modulus increased gradually and steadily with frequency and gum concentration for all the examined emulsions. The addition of crude oil into the lighter xanthan concentration of & lt; 103 ppm provided almost the same behavior as the xanthan solution, whereas the presence of crude oil within the higher xanthan concentrations significantly stimulated the measured values of the complex modulus. For lower gum concentrations of up to 1000 ppm, oil concentration displayed no effect on both the storage and loss moduli, whereas for gum concentrations higher than 1000 ppm, both moduli increased gradually with crude oil concentration. |
