RT Journal Article
T1 Effect of the Medium Composition on the Zn2+ Lixiviation and the Antifouling Properties of a Glass with a High ZnO Content
A1 Esteban Tejeda, Leticia
A1 Palomares, Francisco
A1 Cabal, Belén
A1 López Píriz, Roberto
A1 Fernández, Adolfo
A1 Sevillano Fernández, David
A1 Alou Cervera, Luis
A1 Torrecillas, Ramón
A1 Moya, José
AB The dissolution of an antimicrobial ZnO-glass in the form of powder and in the form of sintered pellets were studied in water, artificial seawater, biological complex media such as common bacterial/yeast growth media (Luria Bertani (LB), yeast extract, tryptone), and human serum. It has been established that the media containing amino acids and proteins produce a high lixiviation of Zn2+ from the glass due to the ability of zinc and zinc oxide to react with amino acids and proteins to form complex organic compounds. The process of Zn2+ lixiviation from the glass network has been studied by X-ray photoelectron spectroscopy (XPS). From these results we can state that the process of lixiviation of Zn2+ from the glass network is similar to the one observed in sodalime glasses, where Na+ is lixiviated to the media first and the fraction of Zn that acts as modifiers (~2/3) is lixiviated in second place. After the subsequent collapse of the outer surface glass layer (about 200–300 nm thick layer) the dissolution process starts again. Antifouling properties against different bacteria (S. epidermidis, S. aureus, P. aeruginosa, E. coli, and M. lutea) have also been established for the glass pellets.
PB MDPI
SN 1996-1944
YR 2017
FD 2017-02-13
LK https://hdl.handle.net/20.500.14352/106039
UL https://hdl.handle.net/20.500.14352/106039
LA eng
NO Esteban-Tejeda L, Palomares FJ, Cabal B, López-Píriz R, Fernández A, Sevillano D, Alou L, Torrecillas R, Moya JS. Effect of the Medium Composition on the Zn2+ Lixiviation and the Antifouling Properties of a Glass with a High ZnO Content. Materials (Basel). 2017 Feb 13;10(2):167.
NO European Commission
DS Docta Complutense
RD 20 ago 2024