Webinar – Determination of Glass Transition Temperature
Comprehensive Coverage of TA Techniques for Determining Glass Transition Temperature
Program Overview
- Basic theory of the glass transition
- Thermal analysis techniques and methods
- Industries and applications
- Practical applications
- Summary
Glass transitions occur in all noncrystalline or semicrystalline materials and lead to significant changes in material properties, such as thermal expansion, specific heat capacity, or modulus. Because the glass transition is very sensitive to chemical and physical structure, it can be used to characterize materials and is therefore important in most industries.
Thermal analysis provides several methods to measure the glass transition and the glass transition temperature.
In this webinar, we will discuss the basic theory of the glass transition and the different thermal analysis techniques (DSC, TMA, and DMA) and methods used to measure it and the associated glass transition temperature.
The determination of glass transition temperature (Tg) is critical for understanding a material's properties. It indicates the temperature at which a substance transforms from a glassy state to a rubbery state or vice versa. The formation of such amorphous glasses is a universal phenomenon observed in nearly all materials.
For practical applications, it is important to realize that the properties of glasses differ significantly from those of other solids. For example, the solubility of glasses is higher than that of crystals; this influences the biological activity of pharmaceutical substances.
Why Is the Determination of Glass Transition Temperature So Important?
The glass transition provides information about molecular dynamics in the supercooled melt. It defines the upper temperature limit for the use of solid amorphous materials; for rubbery materials, it is the lower temperature limit.
Knowledge of the glass transition is also important for optimizing production parameters and the properties of products. In addition, the glass transition can be used to identify and compare materials and is therefore important for quality assurance and failure analysis
