Preparation and characterization of novel cationic-nonionic organo-montmorillonite

With cationic and nonionic surfactants cetyltrimethylammonium bromide (CTAB) and alkylphenol ethoxylates (OP-10) as modifiers, a novel cationic-nonionic organo-montmorillonite (OMt-CTAB-OP-10) was afforded for the first time, and compared the properties of OMt-CTAB-OP-10 with those of cationic organ...

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Bibliographic Details
Published in:Materials express 2015-06, Vol.5 (3), p.180-190
Main Authors: Yin, Qixun, Zhang, Zepeng, Wu, Sanqin, Tan, Jialun, Meng, Ke
Format: Article
Language:English
Subjects:
Cationic
Cations
Differential thermal analysis
Dispersions
Fourier transforms
Infrared spectroscopy
Intercalation Reactions
Layered Materials
Nonionic
Polarity
Surface Properties
X-Ray Diffraction
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Summary:With cationic and nonionic surfactants cetyltrimethylammonium bromide (CTAB) and alkylphenol ethoxylates (OP-10) as modifiers, a novel cationic-nonionic organo-montmorillonite (OMt-CTAB-OP-10) was afforded for the first time, and compared the properties of OMt-CTAB-OP-10 with those of cationic organo-montmorillonite (OMt-CTAB) and nonionic organo-montmorillonite (OMt-OP-10). The results of X-ray diffraction (XRD) and fourier transform infrared spectroscopy (FTIR) prove CTAB and OP-10 has intercalated into Ca-Mt layers. Thermo gravimetric analysis (TGA), differential thermal analysis (DTA), and scanning electron microscopy (SEM) indicate OMt-CTAB-OP-10 exhibited better properties such as larger d001 value, better heat resistance, and larger expansion degree. Moreover, OMt-CTAB-OP-10 showed better dispersion property and high surface polarity, which was proved by contact angle analyses and sedimentation experiments. The surface polarity of OMt-CTAB-OP-10 was higher than that of OMt-CTAB. In high polar solvent, the dispersion and stability of OMt-CTAB-OP-10 were superior to that of OMt-CTAB.
ISSN:2158-5849
DOI:10.1166/mex.2015.1228