VIORICA SIMON*, M. SPINU**, R. ŞTEFAN**

* Faculty of Physics, “Babeş-Bolyai” University, 400084 Cluj-Napoca, Romania
**University of Agricultural Sciences and Veterinary Medicine, 400372 Cluj-Napoca, Romania

Abstract. Quaternary Ag2O-CaO-Bi2O3-B2O3 glasses are investigated with regard to release behaviour and local structure. The dissolution behaviour in water and physiological serum shows that the cations are released rapidly or gradually and points out a multi-step process, generally characterised by higher rates in water than in physiological serum. The structural effect of silver addition to bismuth-borate glasses is observed from infrared spectroscopic data. The antibacterial activity of the investigated samples was tested on five bacteria.

Corresponding author’s e-mail: viosimon@phys.ubbcluj.ro

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