Purification, rheology, mineralogical characterization and modification of Brazilian clays for use in cosmetics, pharmaceuticals and products of high added value

• Grant number: 11/50027-7
• Support Opportunities: Regular Research Grants
• Start date: May 01, 2011
• End date: October 31, 2013
• Field of knowledge: Engineering - Materials and Metallurgical Engineering - Nonmetallic Materials
• Principal Investigator: Francisco Rolando Valenzuela Diaz
• Grantee: Francisco Rolando Valenzuela Diaz
• Host Institution: Escola Politécnica (EP). Universidade de São Paulo (USP). São Paulo , SP, Brazil

Abstract

Nowadays, when contemporary societies are turning to the need to preserve the planet by promoting demand for environmentally friendly products, clays stand out as natural and versatile products with a wide range of applications since ancient pottery to the modern nanotechnology area, and passing through areas such as construction, chemical, petrochemical, food, medicines, environmental preservation, drugs and cosmetics. Brazil is an important world supplier of raw clay (bentonite and kaolin). However, for the technological properties of these materials be better used in a wide range of contemporary industry products, it is necessary to establish a strict quality control. In this project, the goal is to purify, tudy the rheology, mineralogical characterize by quantitative analysis, modify and to investigate other characteristics of 20 Brazilian clays, usually marketed in raw form, to transform them into high purity products with strict quality control, in the forms hydrophilic (both those that swell as they do not swell in water) and hydrophobic (modified clay). As a result we expect to obtain in natura clays and organoclays from brazilian bentonites and kaolins, with quality and purity suitable for use in pharmaceuticals, cosmetics and others products of high added value. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

CUTRIM, ADRIANA ALMEIDA; BOBADILLA, MARGARITA; OLIVEIRA PEREIRA, KLEBERSON R.; ESPER, FABIO JOSE; MARTIN CORTES, GUILLERMO RUPERTO; DA SILVA VALENZUELA, MARIA DAS GRACAS; VALENZUELA-DIAZ, FRANCISCO R.; LI, B; LI, J; IKHMAYIES, S; et al. Characterization of a Brazilian Bentonite for Its Use in the Oil and Gas Industry. CHARACTERIZATION OF MINERALS, METALS, AND MATERIALS 2018, v. N/A, p. 7-pg., 2018-01-01. (12/51871-9, 11/50027-7)

CARVALHO, THAMYRES C.; HILDEBRANDO, EDEMARINO A.; NEVES, ROBERTO F.; VALENZUELA-DIAZ, FRANCISCO R.; LI, B; LI, J; IKHMAYIES, S; ZHANG, M; KALAY, YE; CARPENTER, JS; et al. Clay Smectite Synthetic: Characterization and Application in Nanocomposites. CHARACTERIZATION OF MINERALS, METALS, AND MATERIALS 2018, v. N/A, p. 8-pg., 2018-01-01. (12/51871-9, 11/50027-7)

ARJONA, J. C.; VALENZUELA-DIAZ, F. R.; WIEBECK, H.; WANG, S. H.; SILVA-VALENZUELA, M. G.; LI, B; LI, J; IKHMAYIES, S; ZHANG, M; KALAY, YE; et al. Evaluation of Urea Encapsulation by Microcapsules of PHB/MMT and PHB/OMMT Nanocomposites. CHARACTERIZATION OF MINERALS, METALS, AND MATERIALS 2018, v. N/A, p. 8-pg., 2018-01-01. (12/51871-9, 11/50027-7)