Single, binary and ternary ion exchanged zeolite as an effective bioactive filler for biomedical polymer composites

摘要

The preparation and modelling of single, binary and ternary ion exchanged zeolites that express antimicrobial efficiency is discussed. As experimental material A type zeolite was used and different variations of Ag, Cu and Zn ions were incorporated into the crystal structure. Antimicrobial efficiency is based on the ion concentration and ion release of the zeolite, therefore the maximum cation-exchange capacities (CEC) were determined for each of the single ions. After the determination of CEC the preparation of binary and ternary ion-exchanged zeolite samples were prepared by the mixture of silver, copper and zinc nitrate solutions and the composition of the samples was determined by atomic absorption spectroscopy (AAS). To verify the bioactive effect, the minimum inhibitory concentration (MIC) of single, binary and ternary ion-exchanged zeolite A was determined for bacteria strains.