Banana Aqueous Extract as a Potential Addition to Clay Ceramics

Abstract:

Clays mined in the state of Espirito Santo, Brazil, are basically kaolinitic with refractory behavior. Sintering of these clays for the fabrication of red ceramic products such as bricks, tiles and structural blocks usually requires addition of fluxing agents to consolidate the ceramic structure. The banana plant has potassium as one of its major nutrients, which exists in a relatively higher amount associated with the plant lignocellulosic constitution. Since potassium compounds are also fluxing agents for clay ceramics, the present work evaluates the effect of an aqueous extract obtained from the banana plant, for plastic behavior, into a clayey mixture before firing at conventional temperatures of 700 and 900°C. The results of this banana aqueous extract addition revealed that, within standard deviations of the evaluated properties, there was no apparent improvement but only a slightly tendency of undesirable increase in the ceramic linear shrinkage at 900°C firing temperature.

• Periodical: Materials Science Forum (Volumes 798-799)
• Pages: 246-250
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.798-799.246
• Online since: June 2014
• Authors: Mariane Costalonga de Aguiar*, Lara Pessin Rodrigues, Flaviane Helena Guedes, Jonas Alexandre, Afonso Rangel Garcez de Azevedo, Sergio Neves Monteiro
• Keywords: Banana Aqueous Extract, Clay Ceramic, Technical Properties

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