Predicting physical and chemical properties of bioactive glasses from chemical composition. Part 4: Tailoring compositions with desired properties

E Vedel, D Zhang, H Arstila, Leena Hupa, Mikko Hupa

    Research output: Contribution to journalArticleScientificpeer-review

    25 Citations (Scopus)

    Abstract

    Models for calculating the physical and chemical properties of bioactive glasses were used to formulate novel compositions with pre-specified properties. Compositions allowing glass to be worked into various product forms and with different degrees of in vitro bioactivity were tested. The two physical properties measured, viscosity and divetrification characteristics, had values very similar to those anticipated based on the models. Vie in vitro bioactivity was assessed based on the propensity to form a calcium phosphate surface layer on the glasses in simulated body fluid, as well as by changes in the pH and concentration of ions in simulated body fluid during immersion of the glasses. The glasses were divided into different bioactivity groups depending on the relative change of the in vitro properties. The in vitro tests showed that the measured in vitro bioactivity properties of novel glasses once again were very similar to those anticipated based on the models. Thus, the models offer a method for tailoring glass compositions to have desired in vitro bioactivity as well as favourable properties for manufacturing desired product forms.
    Original languageUndefined/Unknown
    Pages (from-to)9–16
    Number of pages8
    JournalEuropean Journal of Glass Science and Technology Part a Glass Technology
    Volume50
    Issue number1
    Publication statusPublished - 2009
    MoE publication typeA1 Journal article-refereed

    Keywords

    • bioactive glass
    • composition
    • in-vitro bioactivity

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