Testes iniciais com seiva de palma (Opuntia ficus-indica (L.) Mill.) e resina de esonjinha (Albizia lebbeck (L.) Benth.) na elaboração da tinta de terra.

Abstract

Soil is a raw material for making 'geotinta', an ecotechnologyof high social and cultural value, which has been gaining ground in the proposal for bio-construction and permaculture. To obtain the geotinta, only soil and water are used, adding white glue as binder; However, in the bio-construction scenario, replacing the glue with a vegetable binder would add value to the product, due to the current consunier market for biodegradable products. The objective of this research was to evaluate the influence of plant components (sap and resin) on the composition of the geotinta, as attractive to the sustainable construction and handicraft market. The resin used was produced by the ‘esponjinha’ (Albizia lebbeck (L.) Benth.) and palm sap (Opuntia ficus indica (L.) Mill.), Exotic plants, but adapted to the Northeastern semiarid. The material was dissolved in water and added to different colored soil samples previously destorroadas and sieved. The geotinta was applied to ceramic pieces and cotton fabrics. preliminary results were satisfactory, indicating the possibility of using material in substitution glue, because the paint peeled nor was formation of bubbles or cracks, however, future research should continue the proposal.