Abstract
The State of Paraíba has large reserves of bentonite clays, mainly in the District of Boa Vista. New occurrences were recently discovered in the Districts of Pedra Lavrada and Cubatí, Paraíba, Brazil, creating great expectations for further expansion of reserves for industrial production. The use of nonionic surfactants is replacing the traditional ionic surfactants, among others, by its high resistance potential to thermal degradation. The objective is the development organoclays from Pedra Lavrada District PB, Brazil, clays, by adding non-ionic surfactants. The bentonites were organofilized and then characterized by X-ray diffraction (XRD), thermal analysis (TGA and DTA) and Foster swelling, seeking the most appropriate choice of surfactants to the diesel organic dispersing medium. The results showed that incorporation of surfactants used in the clay interlayer spacing increased significantly.
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