Salt-Induced Constructions of Gemini-like Surfactants at the Interface and Their Effects on the Interfacial Tension of a Water/Model Oil System

2018 ◽  
Vol 22 (2) ◽  
pp. 189-196 ◽  
Author(s):  
Han Jia ◽  
Pan Huang ◽  
Hongyan Wu ◽  
An Ma ◽  
Hongtao Zhou
Keyword(s):  
Interfacial Tension ◽  
Water Model ◽  
Model Oil

scholarly journals Facile construction of gemini-like surfactants at the interface and their effects on the interfacial tension of a water/model oil system

RSC Advances ◽  
2017 ◽  
Vol 7 (51) ◽  
pp. 32413-32418 ◽  
Author(s):  
Hongtao Zhou ◽  
Hongyan Wu ◽  
Yuping Yang ◽  
Xu Leng ◽  
Yipu Liang ◽  
...  
Keyword(s):  
Interfacial Tension ◽  
Sodium Dodecyl ◽  
Sodium Dodecyl Benzene Sulfonate ◽  
Water Model ◽  
Benzene Sulfonate ◽  
System P ◽  
Dodecyl Benzene Sulfonate ◽  
Model Oil

Gemini-like surfactants were fabricated by combining sodium dodecyl benzene sulfonate and butane-1,4-bis(methylimidazolium bromide) at the interface and evaluated for their ability to reduce the interfacial tension between water and a model oil.

RESEARCH OF MICELLE FORMATION OF SOY LECITHINS PHOSPHOLIPIDS IN NON-POLAR SOLVENTS

2020 ◽  
Author(s):  
Е.П. Викторова ◽  
Е.В. Лисовая ◽  
М.Р. Жане ◽  
В.И. Мартовщук ◽  
Л.А. Марченко ◽  
...  
Keyword(s):  
Interfacial Tension ◽  
Polar Solvent ◽  
Critical Concentration ◽  
Micelle Formation ◽  
Quantitative Composition ◽  
Chemical Affinity ◽  
Soy Lecithin ◽  
Polar Solvents ◽  
The Difference ◽  
Model Oil

Исследован процесс мицеллообразования фосфолипидов соевых лецитинов в неполярных растворителях. Показано, что процесс мицеллообразования характеризуется двумя значениями критической концентрации мицеллообразования ККМ1 и ККМ2 для растворов фосфолипидов соевых лецитинов в модельном масле и CCl4. Отмечено, что межфазное натяжение растворов фосфолипидов в модельном масле при одной и той же концентрации и температуре ниже по сравнению с межфазным натяжением растворов фосфолипидов соевых лецитинов в CCl4, что объясняется большим химическим сродством молекул фосфолипидов и масла. Установлено в результате сравнения значений ККМ1 и ККМ2 фосфолипидов подсолнечных, рапсовых и соевых лецитинов в модельном масле и в CCl4, что способность к мицеллообразованию фосфолипидов соевых лецитинов в модельном масле и CCl4 ниже по сравнению с фосфолипидами подсолнечных и рапсовых лецитинов, что обусловлено различием в указанных лецитинах количественного состава отдельных групп фосфолипидов, в наибольшей степени способных к мицеллообразованию, а также большим содержанием в соевых лецитинах негидратируемых фосфолипидов, представленных комплексами с двух- и трехвалентными металлами. Отмечено, что проявление способности к мицеллообразованию фосфолипидами соевых лецитинов, как и фосфолипидами подсолнечных и рапсовых лецитинов, в CCl4 ниже, чем в модельном масле. Таким образом, подтверждена эффективность применения CCl4 в качестве неполярного растворителя, позволяющего снизить степень мицеллообразования фосфолипидов соевых лецитинов для разработки способа определения кислотного числа соевых лецитинов с применением импульсного метода ядерного магнитного резонанса. The process of micelle formation of soy lecithin phospholipids in non-polar solvents was studied. It is shown that the process of micelle formation is characterized by two values of the critical concentration of micelle formation KCM1 and KCM2 for solutions of soy lecithin phospholipids in model oil and CCl4. It is noted that the interfacial tension of phospholipid solutions in the model oil at the same concentration and temperature is lower compared to the interfacial tension of soy lecithin phospholipid solutions in CCl4, which is explained by the large chemical affinity of the phospholipids and oil molecules. As a result of comparing the KKM1 and KKM2 values of phospholipids of sunflower, rapeseed and soya lecithins in model oil and in CCl4, it was found that the ability to micelle formation of phospholipids of soya lecithins in both model oil and CCl4 is lower compared with sunflower and rape phospholipids, which the difference in the indicated lecithins in the quantitative composition of individual groups of phospholipids that are most capable of micelle formation, as well as the high content of non-hydratable phospholipids in soya lecithins, represented by complexes with bivalent and trivalent metals. It was noted that the manifestation of the ability to micelle formation by soy lecithin phospholipids, as well as sunflower and rapeseed lecithin phospholipids in CCl4 is lower than in model oil. Thus, the effectiveness of the use of CCl4 as a non-polar solvent has been confirmed, which allows to reduce the degree of micelle formation of soy lecithin phospholipids for the development of a method for determining the a

Effects of Divalent Salts on the Interfacial Activity of the Mixed Surfactants at the Water/Model Oil Interface

2019 ◽  
Vol 22 (6) ◽  
pp. 1487-1494 ◽  
Author(s):  
Kaihe Lv ◽  
Kaile Jia ◽  
Yugui Han ◽  
Qiuxia Wang ◽  
Xu Leng ◽  
...  
Keyword(s):  
Water Model ◽  
Mixed Surfactants ◽  
Interfacial Activity ◽  
Model Oil ◽  
Divalent Salts

Effect of Reaction of NaOH and Daqing Crude Oil on Oil/Water Interfacial Properties and Emulsion Stability

2013 ◽  
Vol 781-784 ◽  
pp. 2389-2395
Author(s):  
Jian Fang Jiang ◽  
Mei Qin Lin ◽  
Xue Qin Xu ◽  
Ming Yuan Li ◽  
Zhao Xia Dong
Keyword(s):  
Zeta Potential ◽  
Interfacial Tension ◽  
Crude Oil ◽  
Aqueous Phase ◽  
Shear Viscosity ◽  
Interfacial Shear ◽  
Oil Water ◽  
The Stability ◽  
Model Oil ◽  
Interfacial Shear Viscosity

The oil/water interfacial properties and the stability of the emulsion of ASP flooding in Daqing Oilfield were investigated with the measurement of interfacial tension, interfacial shear viscosity,Zeta potential and turbidity of the oil/water system. The results show that, after NaOH has reacted with Daqing crude oil for a long time, the interfacial tension between the aqueous phase and Daqing model oil decreases. The absolute value of the Zeta potential of the surface of oil droplets increases. The changes of the interfacial shear viscosity between the aqueous phase and the oil phase do not appear to be obvious. The stability of O/W emulsion formed by Daqing model oil and the aqueous phase is enhanced. After NaOH has reacted with crude oil for 1d, the interfacial tension between oil phase and simulated water, Zeta potential and the stability of the oil/water emulsion become higher than that of the emulsion without NaOH. However, after NaOH has reacted with crude oil for 10 d and 30 d, respectively, the interfacial tension between oil phase and simulated water, Zeta potential and the stability of the O/W emulsion are lower than that of the emulsion with the same reaction for 1d.

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