The glass transition temperature (Tg) for a material is
A. the temperature below which the material is hard and brittle.
B. the temperature below which the material is tough and rubbery.
C. the temperature above which the material is tough and rubbery.
D. Two of the above are true.
Answer:D
The glass transition temperature (Tg) for a material is
A. the temperature below which the material is hard and brittle. B. the temperature below which the material is tough and rubbery. C. the temperature above which the material is tough and rubbery. D. Two of the above are true.