In this work, chitosan and chitosan/montmorillonite (MMT) microspheres, containing the 5-Fluorouracil (5-FU) antitumor drug, were produced by phase inversion technique using a simple and low cost equipment developed during ...

Until 60s, Brazil imported all bentonite clay used in drilling fluids. Today, the deposites in Boa Vista,PB, make the country virtually self-sufficient in bentonite clay, accounting 88% of the total production of crude ...

The use of ceramics in dental prosthesis is due to the aesthetic properties. The CAD/CAM system allows making ceramic restorations, generating a large amount of waste, in powder form, during the roughing and milling cutter ...

The generation of waste in the industrial sector is a problem that has been followed by the economic growth of the sector. Presenting solutions and alternatives that minimize the environmental impact caused by the incorrect ...

Materials with potential for application in photocatalysis has been studied since the mid 70's, so know the structure and morphology of these materials is of fundamental importance to obtain new materials or improve the ...

The objective of this research was to obtain two zirconia by combustion reaction (named ZS and ZSY), evaluating two impregnation methods of the sulfate ion on the surface of the synthesized zirconia sample (ZS), in order ...

Worldwide, much attention has been focused on the use of biomass for the production of so-called "engineering materials". Among the variety of products, biodiesel occupies a prominent position, not only in terms of quantity ...

The objective of this study is to evaluate the influence the type of precursor, source of iron ions, and its concentration in the doping Zn1-xFexO system in order to obtain a product with ferromagnetism at room temperature ...

In Brazil, the welding pipes still uses manual processes with coated electrodes, however, research has grown to implementing more productive processes, and complying with the requirements of specific ...

Chitosan / montmorillonite bionanocomposite films were prepared by the solvent evaporation method, with the aim of immobilizing the drug ibuprofen (IBU) and delaying their release when subjected to a medium that simulates ...