Publication: Modifying interlayer space of montmorillonite with octakis(3-(1-methylimidazolium)propyl) octasilsesquioxane chloride
Issued Date
2019-04-01
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01691317
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2-s2.0-85061009260
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Mahidol University
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SCOPUS
Bibliographic Citation
Applied Clay Science. Vol.171, (2019), 6-13
Suggested Citation
Vuthichai Ervithayasuporn, Supphachok Chanmungkalakul, Nut Churinthorn, Thapakorn Jaroentomeechai, Sasikarn Hanprasit, Rapheepraew Sodkhomkhum, Pusthira Kaewpijit, Suda Kiatkamjornwong Modifying interlayer space of montmorillonite with octakis(3-(1-methylimidazolium)propyl) octasilsesquioxane chloride. Applied Clay Science. Vol.171, (2019), 6-13. doi:10.1016/j.clay.2019.01.022 Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/50761
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Title
Modifying interlayer space of montmorillonite with octakis(3-(1-methylimidazolium)propyl) octasilsesquioxane chloride
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Abstract
© 2019 Elsevier B.V. Highly water-soluble material of multi-imidazolium based silsesquioxane cages (material 2) is a promising candidate for modifying clay mineral interlayer space, which is successfully demonstrated by using montmorillonite. The modified montmorillonite can be easily prepared via cation exchange reaction between material 2 and sodium ions of montmorillonite, dispersed in an aqueous solution at room temperature. The modified montmorillonite formed a precipitate within a few seconds. A single layer of material 2 found to be intercalated in the modified montmorillonite with a maximum interlayer space (d-value) of 18 Å (1.8 nm) from 13 Å (1.3 nm) of the unmodified one was confirmed by transmission electron microscopy (TEM) and X-rays diffraction (XRD). Moreover, the percentage uptake and nature of incorporation of material 2 into montmorillonite layers were investigated by thermal gravimetric analyses (TGA), 29 Si NMR and FT-IR spectroscopies.