Ag/Zn-exchanged NaA as additive in the formulation of bioresistant epoxy coatings

A. M. PEREYRA; M. R. GONZALEZ; T. A. RODRIGUES; M. T. SOAREZ LUTTERBACH; E. I. BASALDELLA

Rio de Janeiro

Congreso; 18th International Zeolite Conference; 2016

International Zeolie Association y Brazilian Catalysis Society

Microbiologically influenced corrosion (MIC) and biofouling processes are mediated by microorganisms adhered to metal surfaces when embedded in a gelatinous matrix called biofilm. Microbial adhesion processes lead to an important modification of the metal/solution interface, generally increasing the aggressiveness of the medium against the substratum.In this paper, samples of NaA containing different quantities of Ag+1 and Zn+2 were prepared by cation exchange in order to evaluate their antibacterial properties. The biocide cations Ag+1 and Zn+2 were hosted in the cavities of the ordered aluminosiliceous framework. Minimum inhibitory concentration (mic) values corresponding to the exchanged zeolites and the antibacterial activity of these products against P. aeruginosa after incorporation in an epoxy coating formulation used for steel protection were determined.