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Synthesis and Properties of Lauryl Phosphate Monoester

  • Yaning Shi , Yonghong Zhao , Guangliang Zhang and Qingbin Dong
Published/Copyright: May 6, 2019
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Abstract

Lauryl phosphate monoester was synthesized from the starting materials lauryl alcohol and phosphoric acid without catalysts. Subsequently, the crude product was purified by recrystallization and characterized by Fourier transform infrared (FT-IR) and nuclear magnetic resonance (31P-NMR). From the results, it was apparent that the synthesized material was the desired target product. Lauryl monoester potassium phosphate reduced the surface tension of water to 25.08 mN/m at a critical micelle concentration (CMC) of 0.569 mmol/L. It showed a low contact angle and had a low surface tension, indicating a good hydrophilicity. Lauryl monoester potassium phosphate also showed excellent antistatic properties, however its emulsifying ability was not good. The size of the aggregates of lauryl monoester calcium phosphate in aqueous solution was 220 nm and their morphology was spherical.

Kurzfassung

Laurylphosphatmonoester wurde aus den Ausgangsmaterialien Laurylalkohol und Phosphorsäure ohne Katalysatoren synthetisiert. Anschließend wurde das Rohprodukt im Rekristallisationsverfahren gereinigt und mittels Fourier-Transformations-Infrarot (FT-IR) und Kernresonanz (31P-NMR) charakterisiert. Aus den Ergebnissen war ersichtlich, dass das synthetisierte Material das gewünschte Zielprodukt war. Laurylmonoester-Kaliumphosphat senkte die Oberflächenspannung von Wasser auf 25,08 mN/m bei einer kritischen Mizellenbildungskonzentration (CMC) von 0,569 mmol/l. Es zeigte einen geringen Kontaktwinkel und hatte eine niedrige Oberflächenspannung, was auf eine gute Hydrophilie hinweist. Laurylmonoester-Kaliumphosphat zeigte auch ausgezeichnete antistatische Eigenschaften, jedoch war seine Emulgierfähigkeit nicht gut. Die Größe der Aggregate von Laurylmonoesterkaliumphosphat in wässriger Lösung betrug 220 nm bei sphärischer Morphologie.


Correspondence address, Dr. Yonghong Zhao, China Research Institute of Daily Chemical Industry, 34# Wenyuan Str., Taiyuan 030001, Shanxi Province, P.R. China 030001, Tel.: (0351)4084691, E-Mail:

Yaning Shi received a bachelor's degree in chemical engineering and technology from Taiyuan University of Science and Technology, P.R. China in 2015 and is currently an M.Sc. student in applied chemistry at the China Research Institute of Daily Chemical Industry, P.R. China.

Yonghong Zhao received a Master's degree in LanZhou Institute of Chemical Physics applied chemistry, P.R. China and is currently a professor of engineering at the China Research Institute of Daily Chemical Industry, P.R. China. His research interests include surfactants and industrial catalysis.

GuangLiang Zhang received a Master's degree in applied chemistry from Shanxi University, P.R. China and is now an engineer at the China Research Institute of Daily Chemical Industry, P.R. China.

Qingbin Dong received a bachelor's degree in polymer materials and engineering from Shenyang University of chemical technology, P.R. China and received a Master's degree in applied chemistry from the China Research Institute of Daily Chemical Industry, P.R. China.


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Received: 2017-10-08
Accepted: 2019-01-11
Published Online: 2019-05-06
Published in Print: 2019-05-15

© 2019, Carl Hanser Publisher, Munich

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