Microemulsions Using Hexaethylene Glycol Mono-n-dodecyl Ether Nonionic Surfactant and Small Amount of Ionic Surfactants

2006 ◽  
Vol 43 (4) ◽  
pp. 197-203 ◽  
Author(s):  
M. Alibrahim
Keyword(s):  
Nonionic Surfactant ◽  
Ionic Surfactants ◽  
Dodecyl Ether

Partitioning of 2-phenylethanol and limonene cosurfactants in C12E4

2017 ◽  
Vol 19 (14) ◽  
pp. 9551-9557 ◽  
Author(s):  
Iain McKenzie ◽  
Robert Scheuermann ◽  
Ian Tucker
Keyword(s):  
Ethylene Glycol ◽  
Nonionic Surfactant ◽  
Muon Spin ◽  
Aqueous Dispersion ◽  
Local Environment ◽  
Spin Probes ◽  
Level Crossing ◽  
Spin Resonance ◽  
Muon Spin Resonance ◽  
Dodecyl Ether

Avoided level-crossing muon spin resonance (ALC-μSR) has been used to study the dynamics and local environment of spin probes formed by muonium (Mu) addition to 2-phenylethanol (PEA) and limonene (1-methyl-4-(1-methylethenyl)-cyclohexene) in an aqueous dispersion of the nonionic surfactant C12E4 (tetra(ethylene glycol) n-dodecyl ether).

Asphaltene Deposition and Removal in Flowlines and Mitigation by Effective Functional Molecules

SPE Journal ◽  
2020 ◽  
Vol 25 (02) ◽  
pp. 771-787 ◽  
Author(s):  
Taniya Kar ◽  
Khosrow Naderi ◽  
Abbas Firoozabadi
Keyword(s):  
Nonionic Surfactant ◽  
Sulfonic Acid ◽  
Ionic Surfactants ◽  
Appreciable Effect ◽  
Efficient Removal ◽  
Aromatic Solvent ◽  
Toluene Concentration ◽  
Low Concentrations ◽  
Asphaltene Deposition ◽  
Dodecylbenzene Sulfonic Acid

Summary Efficient removal of deposited asphaltenes on the surface of metallic flowlines by functional molecules is investigated by nonionic and ionic surfactants at low concentrations. Deposition removal by aromatic solvent toluene is measured as a reference. Water is often coproduced with crude oil and may affect deposition of asphaltenes and removal. In this study, we investigate the effect of water in both asphaltene deposition and removal by functional molecules. Two different crudes from different fields that give rise to serious asphaltene deposition are extensively investigated. For these two crudes, we find one ionic and one nonionic surfactant to be effective in deposition removal at 1 wt% concentration in the crude. This concentration is much lower than that of the commonly studied acidic dodecylbenzene sulfonic acid (DBSA) surfactant. Toluene concentration in the crude varies from 40 to 60 wt% for asphaltene deposition removal. Water delays deposition significantly. However, water does not have an appreciable effect on performance of functional molecules on removal of deposited asphaltenes.

scholarly journals Effect of ionic surfactants on the iridescent color in lamellar liquid crystalline phase of a nonionic surfactant

2007 ◽  
Vol 305 (2) ◽  
pp. 308-314 ◽  
Author(s):  
Xinjiang Chen ◽  
Hiroyuki Mayama ◽  
Goh Matsuo ◽  
Tsukasa Torimoto ◽  
Bunsho Ohtani ◽  
...  
Keyword(s):  
Nonionic Surfactant ◽  
Crystalline Phase ◽  
Liquid Crystalline ◽  
Liquid Crystalline Phase ◽  
Ionic Surfactants

Aqueous foam stabilized by polyoxyethylene dodecyl ether

2009 ◽  
Vol 63 (5) ◽  
Author(s):  
Xi-An Li ◽  
Jian-Bing Peng ◽  
Yong-Li Yan
Keyword(s):  
Aqueous Solutions ◽  
Nonionic Surfactant ◽  
Liquid Crystalline ◽  
Foaming Properties ◽  
Crystalline Phases ◽  
Aqueous Foam ◽  
Liquid Crystalline Phases ◽  
Aqueous Foams ◽  
Chain Lengths ◽  
Dodecyl Ether

AbstractFoaming properties of aqueous solutions of the nonionic surfactant polyoxyethylene dodecyl ether (C12EOn) were studied at 298 K. Four different EO chain lengths, namely C12EO3, C12EO5, C12EO7, and C12EO9, were considered. The foams obtained from C12EO3 or C12EO5 were extraordinary stable retaining a constant volume for more than 20 h. The presence of lamellar liquid crystalline phases was mainly responsible for the super-stable aqueous foams.

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