Accessible Requires Authentication Published by De Gruyter September 9, 2013

Synthesis of Thermoresponsive SiO2 Composite Modified by Nonionic Organosilicone Surfactant

Synthese eines thermoreponsiven SiO2-Komposits, das mit einem nichtionischen Organosilikontensid modifiziert wurde
Xiumei Tai, Jinghong Ma, Zhiping Du and Wanxu Wang

Abstract

Nonionic organosilicone surfactant trisiloxane-modified oligo (propylene oxide-block-ethylene oxide) was selected as the typical modifying agent in the synthesis of thermoresponsive SiO2 composite. Absolute ethanol was used as the reaction medium. The properties of the prepared composite were characterized by transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), contact angle measurement instrument and dynamic light scatter (DLS). The results showed that the low critical solution temperature (LCST) of the composite is consistent with the cloud point of trisiloxane-modified oligo (propylene oxide-block-ethylene oxide).

Kurzfassung

Das nichtionische Organosilikontensid, mit Trisiloxan modifiziertes Oligopropylen-blockethylenoxid, wurde als typisches Modifizierungsmittel für die Synthese eines thermoresponsiven SiO2-Komposits ausgewählt. Absoluter Ethanol wurde als Reaktionsmedium verwendet. Die Eigenschaften des hergestellten Komposits wurden mit Hilfe der Transmissionselektronenmikroskopie (TEM), der Röntgenphotoelektronenspektroskopie (XPS), der Messung des Kontaktwinkels und der dynamischen Lichtstreumessung (DLS) charakterisiert. Die Ergebnisse zeigten, dass die untere kritische Lösungstemperatur (LCST) des Komposits der Cloud-Temperatur des mit Trisiloxan modifizierten Oligopropylen-blockethylenoxid entspricht.


4 Mr. Jinghong Ma, Key Laboratory of Coal Science and Technology, Ministry of Education, Institution of Special Chemicals, Taiyuan University of Technology, Taiyuan 030024, P.R. China, E-Mail: ,
5 Prof. Zhi-Ping Du, China Research Institute of Daily Chemical IndustryTaiyuan 030001P.R. China, E-Mail:

Xiu-Mei Tai is working at China Research Institute of Daily Chemical Industry and a graduate of Taiyuan University of Technology. Her research fields centred at the synthesis of organic/inorganic composite materials and the application of surfactant in the synthesis of nanomaterial.

Jinghong Ma is a professor of Taiyuan University of Technology, Her research mainly focus on the synthesis of zeolite sieve.

Zhi-Ping Du is a chief scientist of Shanxi province surfactant key laboratory, she currently also works at Shanxi University and has been engaged in surfactant and mesoporous molecular sieve researches.

Wan-Xu Wang is the dean of China Research Institute of Daily Chemical Industry.


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Received: 2012-9-21
Revised: 2012-12-11
Published Online: 2013-09-09
Published in Print: 2013-07-15

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