Flow behaviour of pickering hexadecane emulsion stabilized with CNC and AOT for sustainable refrigeration
The rheological behaviour under flow conditions of hexadecane-in-water emulsions stabilized by cellulosic nanoparticles was studied with a capillary viscometer. The study investigated several volume fractions of hexadecane between 0 and 15 vol%. and the temperature was varied in situ to investigate...
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Elsevier
2025-09-01
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| Series: | Results in Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2590123025025630 |
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| author | Pascal Clain Somia Haouache Isabelle Capron Anthony Delahaye Laurence Fournaison |
| author_facet | Pascal Clain Somia Haouache Isabelle Capron Anthony Delahaye Laurence Fournaison |
| author_sort | Pascal Clain |
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| description | The rheological behaviour under flow conditions of hexadecane-in-water emulsions stabilized by cellulosic nanoparticles was studied with a capillary viscometer. The study investigated several volume fractions of hexadecane between 0 and 15 vol%. and the temperature was varied in situ to investigate the liquid and solid states of hexadecane droplets (below and above 18 °C respectively). Various concentrations of 0 to 1 vol% of anionic bis (2-ethylhexyl) sulfosuccinate sodium (AOT) were used as anti-agglomerant agent and to ensure the continuous flow. Based on the capillary viscometer method associated with Rabinowitsch and Mooney’s equation, the apparent viscosity of these emulsions (hexadecane in liquid state), dispersions (hexadecane in solid state) was determined by measuring the pressure drops of the flowing fluid as a function of the flow rate. We observed that the viscosity of those systems increased with the volume fraction of hexadecane, both in liquid and solid state. We also observed that the viscosity can be decreased by cycling the emulsions in the loop. This decrease of viscosity was accompanied by a decrease of the mean droplets size measured by granulometry analysis. We showed in this work the important role of AOT to avoid emulsion agglomeration during the cooling in the loop. |
| format | Article |
| id | doaj-art-7c4b6a22bd5d4201887fedf77afd21ae |
| institution | DOAJ |
| issn | 2590-1230 |
| language | English |
| publishDate | 2025-09-01 |
| publisher | Elsevier |
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| series | Results in Engineering |
| spelling | doaj-art-7c4b6a22bd5d4201887fedf77afd21ae2025-08-20T03:14:36ZengElsevierResults in Engineering2590-12302025-09-012710649410.1016/j.rineng.2025.106494Flow behaviour of pickering hexadecane emulsion stabilized with CNC and AOT for sustainable refrigerationPascal Clain0Somia Haouache1Isabelle Capron2Anthony Delahaye3Laurence Fournaison4De Vinci Higher Education, De Vinci Research Center, Paris, France; Université Paris-Saclay, INRAE, FRISE, 92761 Antony, France; Corresponding author.Université Paris-Saclay, INRAE, FRISE, 92761 Antony, France; INRAE, UR BIA, 44316 Nantes, FranceINRAE, UR BIA, 44316 Nantes, FranceUniversité Paris-Saclay, INRAE, FRISE, 92761 Antony, FranceUniversité Paris-Saclay, INRAE, FRISE, 92761 Antony, FranceThe rheological behaviour under flow conditions of hexadecane-in-water emulsions stabilized by cellulosic nanoparticles was studied with a capillary viscometer. The study investigated several volume fractions of hexadecane between 0 and 15 vol%. and the temperature was varied in situ to investigate the liquid and solid states of hexadecane droplets (below and above 18 °C respectively). Various concentrations of 0 to 1 vol% of anionic bis (2-ethylhexyl) sulfosuccinate sodium (AOT) were used as anti-agglomerant agent and to ensure the continuous flow. Based on the capillary viscometer method associated with Rabinowitsch and Mooney’s equation, the apparent viscosity of these emulsions (hexadecane in liquid state), dispersions (hexadecane in solid state) was determined by measuring the pressure drops of the flowing fluid as a function of the flow rate. We observed that the viscosity of those systems increased with the volume fraction of hexadecane, both in liquid and solid state. We also observed that the viscosity can be decreased by cycling the emulsions in the loop. This decrease of viscosity was accompanied by a decrease of the mean droplets size measured by granulometry analysis. We showed in this work the important role of AOT to avoid emulsion agglomeration during the cooling in the loop.http://www.sciencedirect.com/science/article/pii/S2590123025025630RheologyPhase change material slurriesPickering emulsionHexadecaneCellulose nanocrystalsAOT |
| spellingShingle | Pascal Clain Somia Haouache Isabelle Capron Anthony Delahaye Laurence Fournaison Flow behaviour of pickering hexadecane emulsion stabilized with CNC and AOT for sustainable refrigeration Results in Engineering Rheology Phase change material slurries Pickering emulsion Hexadecane Cellulose nanocrystals AOT |
| title | Flow behaviour of pickering hexadecane emulsion stabilized with CNC and AOT for sustainable refrigeration |
| title_full | Flow behaviour of pickering hexadecane emulsion stabilized with CNC and AOT for sustainable refrigeration |
| title_fullStr | Flow behaviour of pickering hexadecane emulsion stabilized with CNC and AOT for sustainable refrigeration |
| title_full_unstemmed | Flow behaviour of pickering hexadecane emulsion stabilized with CNC and AOT for sustainable refrigeration |
| title_short | Flow behaviour of pickering hexadecane emulsion stabilized with CNC and AOT for sustainable refrigeration |
| title_sort | flow behaviour of pickering hexadecane emulsion stabilized with cnc and aot for sustainable refrigeration |
| topic | Rheology Phase change material slurries Pickering emulsion Hexadecane Cellulose nanocrystals AOT |
| url | http://www.sciencedirect.com/science/article/pii/S2590123025025630 |
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