Which of the following is a definition of glass transition temperature?

a. The temperature at which a glass transforms from a liquid to solid.

b. The temperature at which there is a slight decrease in the slope of the temperature versus specific volume curve.

c. The temperature at which a glass transforms from a solid to liquid.

c. The temperature at which a glass transforms from a solid to liquid.

Explanation:

The glass transition temperature is said to be a temperature range when a polymer structure transition from a glass or hardy (solid) material to a rubber like or viscous liquid material.

The glass transition temperature is an important property that is critical in product design.