The present paper deals with a targeted modification of two kinds of alternative additives - waste from glass production and natural mineral filler and explores their effect on the properties of polymeric materials. In the function of first alternative filler was used sludge from weighing the ingredients of glass batch in the glass production. The second used was natural aluminosilicate material based on zeolite (clinoptilolite). These alternative fillers have been modified in order to increase its efficiency, using the silanes: 3-aminopropyl-triethoxysilane, bis(triethoxysilyl)propyl-tetrasulfide and 3-(triethoxysilyl)propyl-methacrylate. In the case of alternative filler based on zeolite the influence of silanization conditions on the filler efficiency have been also studied. Prepared modified fillers were mixed into rubber compounds as partial replacement of commonly used filler – carbon black. The influence of prepared fillers on rheology and curing characteristics of rubber compounds and also on physical and mechanical properties of vulcanizates has been studied. Obtained results of measured characteristics of polymeric systems containing prepared alternative fillers were compared with the results obtained in the case of reference rubber compound with a commertially used filler – carbon black.

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Zinc-doped bioactive glass prepared by conventional melting was tested in simulated body fluid (SBF) to quantitatively determine zinc ion release at the early stage of dissolution of bioactive glass. The analysis of the leaching solution was performed in a flow-through arrangement, with the reaction cell connected directly to the nebulizer of the ICP OES. Possible formation of zinc silicate and zinc phosphate as alteration products precipitating from SBF solution along with hydroxyapatite was evaluated using the PHREEQC modeling code. Direct monitoring in the first 10-min interval of contact of the glass with SBF contributed to determination of the immediate quantity of zinc leached from the glass and confirmed burst release of zinc from material, with a maximum after ∼4.5 min of contact with the SBF.