Journal
MATERIALS RESEARCH BULLETIN
Volume 48, Issue 5, Pages 1811-1816Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.materresbull.2013.01.029
Keywords
Multilayers; Intercalation reactions; X-ray diffraction; Thermogravimetric analysis; Surface properties
Categories
Funding
- National Science and Technology Support Project [2011BAB03B06]
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The synergistic effect of cationic surfactant (CAB) and anionic surfactant (SDS) for the modification of Ca-montmorillonite (Ca-MMT) has been developed, and the novel cation-anion Modified organo-montmorillonite (MMT-CTAB-SDS) was prepared. X-ray diffraction (XRD) analysis indicates that the interlayer spacing of montmorillonite was well expanded by the intercalation of CTAB and SOS and the basal spacing increased from 1.54 nm (Ca-MMT) to 5.30 nm (MMT-CTAB-SDS). Thermogravimetric analysis (TG) showed that the MMT-CTAB-SDS displayed excellent heat resistance. Scanning electron microscopy (SEM) analysis proved that the MMT-CTAB-SDS exhibited excellent dispersion property and the plates with few silicate layers can be observed. Contact angle tests indicated that the hydrophilicity of MMT-CTAB-SDS was lower than that of Ca-MMT and higher than that of MMT-CTAB. It was verified that SOS contributed to expanding the interlayer space, further improved the heat resistance of the MMT-CTAB and decreased the surface energy of the MMT-CTAB-SDS particles. (C) 2013 Elsevier Ltd. All rights reserved.
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