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Issue 120, 2015
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The Maya blue nanostructured material concept applied to colouring geopolymers

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Abstract

Maya blue is an ancient nanostructured pigment synthetized by assembling indigo, a natural dye, with palygorskite, a microfibrous clay mineral. The novelty of our approach is to mimic “pre-Columbian nanotechnology” and to functionalize geopolymers with a sepiolite-based hybrid organic–inorganic nanocomposite inspired from the Maya blue. It is acid- and UV-resistant, as confirmed by the stability of Maya mural paintings over time. We synthesized analogous pigments, using methylene blue (MB) and methyl red (MR) as organic dyes and sepiolite as fibrous clay mineral. We used an aqueous and a solid-state method, both leading to encapsulation of dye monomers into the clay micropores, as confirmed by UV-vis spectroscopy. This nanostructured pigment was then included into a geopolymer matrix at room temperature. The stability of the new material to UV and acid was tested. It was confirmed that it is the prior encapsulation of the dye into sepiolite that leads to the stability of the pigment in the geopolymer matrix. This first study opens the way to numerous possibilities for functionalizing inorganic binder materials with organic elements that would be otherwise sensitive to thermal treatment in conventional ceramic processing.

Graphical abstract: The Maya blue nanostructured material concept applied to colouring geopolymers

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Publication details

The article was received on 16 Jul 2015, accepted on 10 Nov 2015 and first published on 12 Nov 2015


Article type: Paper
DOI: 10.1039/C5RA14076E
Citation: RSC Adv., 2015,5, 98834-98841
  • Open access: Creative Commons BY-NC license
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    The Maya blue nanostructured material concept applied to colouring geopolymers

    C. Ouellet-Plamondon, P. Aranda, A. Favier, G. Habert, H. van Damme and E. Ruiz-Hitzky, RSC Adv., 2015, 5, 98834
    DOI: 10.1039/C5RA14076E

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