A kinetic crossover at which structural or segmental relaxation becomes too slow for the observation timescale. Its apparent temperature depends on thermal history and measurement rate.
The empirical relation for some homogeneous polymer mixtures or copolymers, with temperatures in kelvin and mass fractions .
Articles by others on the same topic
The glass transition is a phenomenon observed in amorphous materials, such as glasses and certain polymers, characterized by a reversible change in physical properties as the temperature changes. It describes the process where a material transitions from a hard and relatively brittle "glassy" state to a more flexible "rubbery" state as it is heated. Key characteristics of the glass transition include: 1. **Temperature Range**: The glass transition temperature (Tg) is the temperature at which the transition occurs.