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Kinetic stability and rheology of wax-stabilized water-in-oil emulsions at different water cuts.
J Colloid Interface Sci. 2013 Nov 15; 410:11-20.JC

Abstract

The impact of continuous phase wax solidification on the isothermal rheological properties of water-in-oil (W/O) emulsions at different water cuts (10-50 wt%) was investigated. Rotational viscometry, oscillatory rheology and creep compliance and recovery were performed on emulsions aged up to 28 days. Higher water cuts yielded emulsions with a higher bulk viscosity and storage modulus (G') but lower maximum creep compliance (J(max)) values. The development of a more pronounced continuous phase wax crystal network with age led to a corresponding increase in emulsion bulk viscosity and G' as well as a decrease in Jmax. Supporting results for these findings were acquired with light microscopy, solid wax content, and aqueous droplet size analysis. This study established that both water cut and continuous phase wax solidification play a significant role in W/O emulsion rheology, though this greatly depends on the age of the emulsion. Such findings may be used to better understand and tailor emulsion properties in fields such as the petrochemical, cosmetics, food and pharmaceutical industries.

Authors+Show Affiliations

Department of Chemical and Petroleum Engineering, University of Calgary, Calgary, AB, Canada.No affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

24016747

Citation

Haj-shafiei, Samira, et al. "Kinetic Stability and Rheology of Wax-stabilized Water-in-oil Emulsions at Different Water Cuts." Journal of Colloid and Interface Science, vol. 410, 2013, pp. 11-20.
Haj-shafiei S, Ghosh S, Rousseau D. Kinetic stability and rheology of wax-stabilized water-in-oil emulsions at different water cuts. J Colloid Interface Sci. 2013;410:11-20.
Haj-shafiei, S., Ghosh, S., & Rousseau, D. (2013). Kinetic stability and rheology of wax-stabilized water-in-oil emulsions at different water cuts. Journal of Colloid and Interface Science, 410, 11-20. https://doi.org/10.1016/j.jcis.2013.06.047
Haj-shafiei S, Ghosh S, Rousseau D. Kinetic Stability and Rheology of Wax-stabilized Water-in-oil Emulsions at Different Water Cuts. J Colloid Interface Sci. 2013 Nov 15;410:11-20. PubMed PMID: 24016747.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Kinetic stability and rheology of wax-stabilized water-in-oil emulsions at different water cuts. AU - Haj-shafiei,Samira, AU - Ghosh,Supratim, AU - Rousseau,Dérick, Y1 - 2013/07/25/ PY - 2013/01/31/received PY - 2013/06/14/revised PY - 2013/06/19/accepted PY - 2013/9/11/entrez PY - 2013/9/11/pubmed PY - 2014/4/9/medline KW - Viscoelasticity KW - Viscosity KW - Water cut KW - Water-in-oil emulsion KW - Wax crystallization SP - 11 EP - 20 JF - Journal of colloid and interface science JO - J Colloid Interface Sci VL - 410 N2 - The impact of continuous phase wax solidification on the isothermal rheological properties of water-in-oil (W/O) emulsions at different water cuts (10-50 wt%) was investigated. Rotational viscometry, oscillatory rheology and creep compliance and recovery were performed on emulsions aged up to 28 days. Higher water cuts yielded emulsions with a higher bulk viscosity and storage modulus (G') but lower maximum creep compliance (J(max)) values. The development of a more pronounced continuous phase wax crystal network with age led to a corresponding increase in emulsion bulk viscosity and G' as well as a decrease in Jmax. Supporting results for these findings were acquired with light microscopy, solid wax content, and aqueous droplet size analysis. This study established that both water cut and continuous phase wax solidification play a significant role in W/O emulsion rheology, though this greatly depends on the age of the emulsion. Such findings may be used to better understand and tailor emulsion properties in fields such as the petrochemical, cosmetics, food and pharmaceutical industries. SN - 1095-7103 UR - https://www.unboundmedicine.com/medline/citation/24016747/Kinetic_stability_and_rheology_of_wax_stabilized_water_in_oil_emulsions_at_different_water_cuts_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0021-9797(13)00601-2 DB - PRIME DP - Unbound Medicine ER -