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Synthesis and Surface Properties of Trisiloxane-modified Oligo(ethylene oxide)

Synthese und Oberflächeneigenschaften von trisiloxanmodifiziertem Oligo(Ethylenoxid)
G.-Y. Wang , Z.-P. Du , W. Zhang and Q.-Y. Cao

Abstract

In a solvent free system, hydrolytically stable nonionic surfactants, trisiloxane grafted Oligo(ethylene oxide), were synthesized by hydrosilylation of heptamethyltrisiloxane with allyl-oligo(EO) series. The structures of intermediate and products were confirmed by infrared spectroscopy and 1H nuclear magnetic resonance spectroscopy. Surface activity, foaming property and wetting ability of the surfactants were also investigated. The results show that the prepared surfactants exhibited excellent surface activity and wetting ability.

Kurzfassung

In einem lösungsmittelfreien System wurden trisiloxangepropfte Oligo(Ethylenoxide) als hydrolytisch stabile nichtionische Tenside durch Hydrosilylation von Heptamethyltrisiloxan mit Alyl-Oligo(EO)-Reihen synthetisiert. Die Strukturen der Zwischenprodukte und Produkte wurden durch Infrarot- und 1H-Kernresonanzspektroskopie bestätigt. Die Oberflächenaktivität, das Schaumverhalten und Benetzungsvermögen der Tenside wurden ebenfalls untersucht. Die Ergebnisse zeigen, dass die dargestellten Tenside ausgezeichnete Oberflächenaktivitäten und Schaumverhalten aufweisen.


Zhi-ping Du, China Research Institute of Daily Chemical Industry, Taiyuan 030001, Shanxi Province, P.R. China, Tel.: 0086-351-4070043, E-Mail:

Guoyong Wang is currently a Ph.D. student in Shanxi university. He received his M.S. degree from Nanchamg University of china in 2006. He joined Prof. Du Zhi-Ping's group In 2006. His current scientific interests are focused on the synthesis study of organosilicone surfactants and understanding their structure-related surface physical and chemical properties.

Zhi-Ping Du is currently a director of Shanxi province surfactant key laboratory. She received her Ph.D. degree (2003) from Leeds University. Then she worked as a postdoctoral fellow in Leeds University. Her scientific interest is focused on surfactant and detergent researches.

Wei Zhang received a B.S. in Chemical Engineering from Beijing University of Chemical Technology, M.S. in Physic chemistry from China Research Institute of Daily Chemical Industry. Her research interests are synthesis and properties of novel surfactants.

Qianyong Cao is now professor of Nanchang University. He received his B.S. from Nanchang University and Ph.D. from Technical Institute of Physics and Chemistry, Chinese Academy of Sciences in 2004. His research interests are the manufacture of surfactants.


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Received: 2009-01-14
Revised: 2009-04-13
Published Online: 2013-04-02
Published in Print: 2009-07-01

© 2009, Carl Hanser Publisher, Munich

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