Liquid Fragility Determination Of Oxide Glass-Formers Using Temperature-Modulated Dsc

Glass-forming liquids exhibit a pronounced diversity in the viscosity-temperature relation. This has been characterised by the liquid fragility index to quantify the extent of the non-Arrhenian flow. Precise and accurate determination of liquid fragility is important for understanding a range of phenomena and controlling industrial glass melting processes. In this study, temperature-modulated differential scanning calorimetry (TM-DSC) is used to determine liquid fragility of a wide range of oxide compositions, including tellurites, borates and silicates. Data is compared to those determined using viscometry and the Moynihan DSC approach.