Indigo chemisorption in sepiolite. Application to Maya blue formation

Sonia Ovarlez (1) , Anne-Marie Chaze (1) , Francoise Giulieri (1) , François Delamare (2)

1 Chimie des Matériaux Organiques et Métalliques
2 CEMEF - Centre de Mise en Forme des Matériaux

Having first studied the loss of water in sepiolite via TGA, we then observed through FTIR the evolution of the indigo/sepiolite chemical bonds during the Maya blue formation process. Three stages, corresponding to three different temperature domains, were observed. They explain the peculiar properties of this pigment.

Mots clés: Indigo; Maya blue; Sepiolite

Domaines: Matériaux

Sonia Ovarlez, Anne-Marie Chaze, Francoise Giulieri, François Delamare. Indigo chemisorption in sepiolite. Application to Maya blue formation. Comptes Rendus. Chimie, 2006, 9 (10), pp.Pages 1243-1248. ⟨10.1016/j.crci.2006.03.001⟩. ⟨hal-00512759⟩