What is glass transition and how is it measured?
The glass transition temperature (Tg) indicates when a polymer goes from rigid and glassy, to plastic, to eventually a rubbery elastomer. A material below its Tg will be hard and brittle with restricted movement. A material above its Tg will move more freely and be softer. We employ our Digital Scanning Calorimeter (DSC) to determine the glass transition temperature of your material.
Why is glass transition temperature important?
Various products are designed to work over a wide temperature range, knowing the glass transition temperature allows you to tailor your product for its desired use. If you need your product to be flexible it is important for a polymer to have a glass transition temperature (Tg) below ambient temperature or its operating temperature. For materials that need to be solid or rigid you would choose a polymer that has a glass transition temperature (Tg) above its operating temperature in order to maintain its structural integrity. For adhesives, bonding occurs most effectively very near the glass transition temperature of the polymer.