Pressure drops during the flow of solutions of cocamidopropyl betaine and cocamide DEA mixtures with the addition of ethylene glycol

The paper presents the results of experimental studies on pressure drops during the flow of cocamidopropyl betaine (CAPB) and DEA cocamide solutions with the addition of ethylene glycol. The degree of drag reduction during the flow of the CAPB/DEA aqueous solution and with the 10% addition of ethyle...

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Bibliographic Details
Published inPolish journal of chemical technology Vol. 24; no. 4; pp. 67 - 71
Main Authors Sylwia, Różańska, Jacek, Różański, Patrycja, Wagner, Ewelina, Warmbier
Format Journal Article
LanguageEnglish
Published Szczecin Sciendo 01.12.2022
De Gruyter Poland
Subjects
Accuracy
Additives
Aqueous solutions
Coconut diethanolamide
Degradation
Drag reduction
drug reduction
Ethylene glycol
Flow resistance
Pressure drop
Reynolds number
rheology
Surfactants
surfactants solutions
Viscosity
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Summary:The paper presents the results of experimental studies on pressure drops during the flow of cocamidopropyl betaine (CAPB) and DEA cocamide solutions with the addition of ethylene glycol. The degree of drag reduction during the flow of the CAPB/DEA aqueous solution and with the 10% addition of ethylene glycol was similar. A significant reduction in pressure drops was also observed at the 20% concentration of ethylene glycol. However, the increase in the concentration of ethylene glycol resulted in the reduction of flow resistance at higher temperatures. The resistance of the micellar microstructure of CAPB/DEA solutions to mechanical degradation depends strongly on the pH level. Significant changes in flow properties were observed when the initial pH was alkaline. The solution with initial pH close to neutral was stable over time, though reduced resistance to degradation with time was also observed.
ISSN:1899-4741
1509-8117
1899-4741
DOI:10.2478/pjct-2022-0030