The glass transition temperature

The glass transition temperature (Tg) refers to the temperature corresponding to the transition from a glassy state to a high elastic state. The glass transition is an inherent property of amorphous polymer materials, which is a macroscopic manifestation of the transformation of polymer motion form. It directly affects the performance and process properties of materials, so it has been the main content of polymer physics research for a long time. The glass transition temperature (Tg) is the lowest temperature at which the molecular chain segment can move, and its level is directly related to the flexibility of the molecular chain. The greater the flexibility of the molecular chain, the lower the glass transition temperature. High molecular chain rigidity, high glass transition temperature.