Membranes of cellulose containing metal colloids - Properties and Applications

• Grant number: 09/11590-8
• Support Opportunities: Scholarships in Brazil - Master
• Start date: March 01, 2010
• End date: February 29, 2012
• Field of knowledge: Physical Sciences and Mathematics - Chemistry - Inorganic Chemistry
• Principal Investigator: Sidney José Lima Ribeiro
• Grantee: Moliria Vieira dos Santos
• Host Institution: Instituto de Química (IQ). Universidade Estadual Paulista (UNESP). Campus de Araraquara. Araraquara , SP, Brazil

Abstract

The bacterial cellulose obtained by the culture of the bacteria Acetobacer xylinum is chemically pure, hidrophilic and with crystalline higher than vegetable cellulose. This properties linked to nanometric tridimensional structure supply a wide several of aplication, for instance, paper industry , textile industry and food industry. In medical area highlight uma aplication as temporary substitute of skin in treatment of severe burn and serious injuries. The bacterial cellulose is still a excellent matrix for metalic colloids or dielétricos. Colloids of silver and gold are very promising due ópticas properties that are the base for some interesting effects such as intensification of lines Raman (effects SERS) and luminescence de lanthanides ions both due the interaction with plasmons of metalic superface.The objetive this project is the preparation of membrane of bacterial cellulose contain nanoparticles of silver and gold with controlled shape and the study your optical properties and aplication in increase of espectric Raman and luminescencia of adsorbed species.

Academic Publications

(References retrieved automatically from State of São Paulo Research Institutions)

SANTOS, Moliria Vieira dos. Nanocompósitos baseados em celulose bacteriana para aplicações ópticas. 2012. Master's Dissertation - Universidade Estadual Paulista (Unesp). Instituto de Química. Araraquara Araraquara.