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Licensed Unlicensed Requires Authentication Published by De Gruyter November 7, 2016

Micelle Formation of Morpholinium Bromide Surfactants in Aqueous Solution

Mizellenbildung von Morpholiniumbromidtensiden in wässriger Lösung
  • Zhaohong Qian , Dandan Huang , Sijing Yi , Qintang Li , Jiao Wang and Xiao Chen


The micelle formation of N-alkyl-N-methylmorpholinium bromide (CnMMB, n = 12, 14, 16) surfactants in aqueous solution has been investigated. Their critical micelle concentration (CMC), effectiveness and efficiency of the surface tension reduction, and the maximum surface excess concentration were derived from the surface tension curves. Thermodynamic parameters were then evaluated in the temperature range of 25 °C ∼ 45 °C. The results showed that with increasing the alkyl chain length, the CMC values were decreased gradually, which is consistent with the enhancement of hydrophobic effect. Due to the existence of an oxygen atom in the headgroup, an unusual surface activity of CnMMB surfactants was obtained. The obtained results should help to better understand the effect of the hydrophilic headgroup on the micelle behavior of cationic surfactants containing saturated nitrogen-containing heterocycles.


Die Mizellenbildung von N-Alkyl-N-methylmorpholiniumbromidtensiden (CnMMB, n = 12, 14, 16) in wässriger Lösung wurde untersucht. Ihre kritische Mizellenbildungskonzentration (CMC), ihre Effektivität und ihre Effizienz bei der Reduktion der Oberflächenspannung und die maximale Oberflächenüberschusskonzentration wurden aus den Oberflächenspannungskurven bestimmt. Anschließend wurden die thermodynamischen Parameter für den Temperaturbereich von 25 °C bis 45 °C ermittelt. Die Ergebnisse zeigten, dass mit zunehmender Alkylkettenlänge die CMC fortschreitend abnahmen, was mit der Verstärkung des hydrophoben Effekts konsistent ist. Aufgrund des Sauerstoffatoms in der Kopfgruppe zeigten die CnMMB-Tenside eine ungewöhnliche Oberflächenaktivität. Die erzielten Ergebnisse sollten helfen, den Einfluss der hydrophilen Kopfgruppe auf das mizellare Verhalten der kationischen Tenside, die Heterozyklen mit gesättigtem Stickstoff enthalten, besser zu verstehen.

*Correspondence address, Mr. Prof. Xiao Chen, Key Laboratory of Colloid and Interface Chemistry, Shandong University, Ministry of Education, Jinan, Shandong, 250100, P. R. China, E-Mail:
**Mrs. Dr. Dandan Huang, College of Chemistry and Material Science, Shandong Agricultural University, Taian, Shandong, 271018, P. R. China, Tel.: +86-531-88365420, Fax: +86-531-88564464, E-Mail:

Zhaohong Qian got her BA in Department of Chemistry, Qufu Normal University in 2009 and got her MD in School of Chemistry, Shandong University in 2012. Then she joined Prof. Xiao Chen's group as a PhD student. Currently, she is working on aggregation behaviors of various surfactants.

Dandan Huang got her BA and PhD in School of Chemistry, Shandong University respectively in 2009 and 2014 from Prof. Xiao Chen's group. Currently, she is a lecturer in Shandong Agricultural University.

Sijing Yi got her BA in Department of Chemistry, Shanxi Datong University in 2012. Then she joined Prof. Xiao Chen's group as a PhD student. Currently, she is working on luminescent surfactant self-assemblies.

Qintang Li got his BA in School of Chemistry, Shandong University in 2011 and joined Prof. Xiao Chen's group as a PhD student. Currently, he is working on aggregation behaviors of Gemini surfactants.

Jiao Wang got her BA in Department of Chemistry, Shanxi Datong University in 2013. Then she joined Prof. Xiao Chen's group as a PhD student. Currently, she is working on self-assembly of Bola surfactants.

Xiao Chen is a professor of chemistry at Shandong University. His research interests include lyotropic phase behavior studies on various amphiphiles in different solvents. He is a member of ACS and an active member of CCS.


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Received: 2015-12-08
Accepted: 2016-05-03
Published Online: 2016-11-07
Published in Print: 2016-11-15

© 2016, Carl Hanser Publisher, Munich

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