利用咪唑啉两性表面活性剂在水相中剥离类水滑石的研究

doi:10.13218/j.cnki.csdc.2018.08.002

Abstract

Abstract: Imidazoline amphoteric surfactants intercalated MgAl-hydrotalcite-like compounds (MgAl-LDHs) were prepared by co-precipitation method.After placing the MgAl-LDHs in an aqueous solution with pH=2,the amphoteric ions present in the interlayer were converted to cationic,then the exfoliation of MgAl-LDHs layers was successfully achieved in the aqueous phase by electrostatic repulsion.The samples were characterized by X-ray diffraction,fourier transform infrared spectroscopy,thermogravimetry,differential scanning calorimetry,and transmission electron microscopy.The results show that imidazoline amphoteric surfactants with different molecular lengths are successfully embedded between the MgAl-LDHs layers,and the interlayer spacing is different.The intercalated MgAl-LDHs are successfully exfoliated.The results of XRD and TEM have confirmed the stratification of MgAl-LDHs,while the Tyndall effect has confirmed the presence of colloids.

Key words: amphoteric surfactant, hydrotalcite-like compounds, exfoliation

CLC Number:

TQ423.3

SUN Hui-yan,BAI Xue-li,XUE Dan-dan,HUANG Xin,ZHANG Jian,ZHANG Yue. Study on exfoliation of hydrotalcite-like compounds in aqueous phase with imidazoline amphoteric surfactants[J].China Surfactant Detergent & Cosmetics, 2018, 48(8): 430-433.

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Study on exfoliation of hydrotalcite-like compounds in aqueous phase with imidazoline amphoteric surfactants

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