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Synthesis of a Gemini Betaine Surfactant and Its Properties as Foam Drainage Agent

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Published/Copyright: March 9, 2018
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Abstract

A novel betaine Gemini surfactant (B18-4-18) was synthesized by two-step reaction with N,N-dimethyl oleoaminde-propylamine, sodium 2-hydroxy-3-chloro propanesulfate and 1,4-dibromobutane as main raw materials. The structure of the synthesized betaine Gemini surfactant was characterized by Fourier transform infrared spectroscopy (FTIR) and 1H nuclear magnetic resonance spectrum (1HNMR), the surface tension curve and related parameters were obtained by surface tension measurements. The surface tension of oleamide hydroxypropyl betaine (B18) and the Gemini surfactant (B18-4-18) at different concentrations was measured. The experimental results showed that the structure of the synthesized compounds was in conformity with the expected structure of the surfactants. The critical micelle concentration of B18 was 6.1 × 10−6 mol/L, the corresponding surface tension was 34.27 mN/m. The critical micelle concentration of B18-4-18 was 5.0 × 10−6 mol/L, the corresponding surface tension was 31.67 mN/m at 25°C. The liquid carrying rate of B18 and B18-4-18 can reach 87% and 92% in water respectively. The liquid carrying rate of B18 and B18-4-18 can reach 82% and 84% in 150 000 mg/L mineralized water. The liquid carrying rate of B18 and B18-4-18 can reach 64% and 67% respectively at 10% condensate oil.

Kurzfassung

Ein neues Gemini-Betain (B18-4-18) wurde durch eine zweistufige Reaktion mit N,N-Dimethyloleoamin-Propylamin, Natrium-2-hydroxy-3-chlorpropansulfat und 1,4-Dibrombutan als Hauptausgangsmaterialien synthetisiert. Die Struktur des synthetisierten Gemini-Betains wurde durch Fourier-Transformations-Infrarotspektroskopie (FTIR) und 1H-Kernresonanzspektrum (1H-NMR) charakterisiert, die Oberflächenspannungskurve und ähnliche Oberflächenparameter wurden durch Oberflächenspannungsmessungen erhalten. Die Oberflächenspannung von Oleamidhydroxypropylbetain (B18) und des Gemini-Betains (B18-4-18) wurde bei verschiedenen Konzentrationen gemessen. Die experimentellen Ergebnisse zeigten, dass die Struktur der synthetisierten Verbindungen in Übereinstimmung mit der erwarteten Struktur der Tenside war. Die kritische Mizellenbildungskonzentration von B18 betrug 6,1 × 10−6 mol L−1, die entsprechende Oberflächenspannung betrug 34,27 mN m−1. Die kritische Mizellenbildungskonzentration von B18-4-18 betrug 5,0 × 10−6 mol L−1, die entsprechende Oberflächenspannung betrug 31,67 mN m−1 bei 25°C. Die Geschwindigkeit der Flüssigkeitsübertragung in Wasser von B18 bzw. B18-4-18 kann 87% bzw. 92% erreichen. Die Geschwindigkeit der Flüssigkeitsübertragung in mineralisiertem Wasser (150000 mg L−1) von B18 bzw. B18-4-18 kann 82% bzw. 84% erreichen. In 10%-igem Kondensatöl kann Geschwindigkeit der Flüssigkeitsübertragung von B18 bzw. B18-4-18 64% bzw. 67% erreichen.


*Correspondence address, Prof. Dr. Xiaojuan Lai, College of Chemistry & Chemical Engineering, Shaanxi University of Science & Technology, Xi'an 710021, Shaanxi, P.R. China, Tel.: +86-13649255462, E-Mail:

Hui Qi, an engineer, graduated from Changqing oil school of China, working in Wuqi Oil Production Factory, Yanchang Oilfield Co. Ltd in Yan'an, Shaanxi, China. His research expertise is oilfield development.

Zhonggang Bai, an engineer, got master degree from Xi'an Shiyou University, Shaanxi, China. He is working in Wuqi Oil Production Factory, Yanchang Oilfield Co. Ltd in Yan'an, Shaanxi, China. His major is oil and gas engineering.

Qunzheng Zhang, professor, graduated from Shaanxi University of Science & Technology of China and got doctor degree in 2010. He has been working in Xi'an Shiyou University of China since July, 1991. His research expertise is organic synthesis and oilfield chemicals.

Xiaojuan Lai, professor, got doctor degree in 2010. She has been working in Shaanxi University of Science & Technology of China since 2007. Her research expertise is oilfield chemicals and surfactant chemistry.


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Received: 2017-11-10
Accepted: 2017-12-14
Published Online: 2018-03-09
Published in Print: 2018-03-16

© 2018, Carl Hanser Publisher, Munich

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