Glass is an ideal container material for pharmaceuticals products regarding thermal and chemical resistance, and tunable transparency or selective absorption. However, glass needs high temperatures to melt and processing is highly dependent on the melt viscosity of the liquid glass. This study presents the temperature dependent viscosity of two packaging glass materials, as well as measurements of the visco-elastic properties. Quantitative data on flow and deformation behaviour are relevant for temperatures above and below the working point.
Dr. Daniela Ehgartner has been working at Anton Paar in Austria since 2017. She is the international product manager for high temperature rheometry and thus responsible for rheometers enabling the characterization of the viscosity and visco-elastic properties of glass, rock and metal melts, slags and molten salts up to 1730°C. She graduated at Vienna University of Technology (VUT) and was awarded a PhD in Technical Chemistry at VUT in 2017.