Question

Amorphous thermoplastics are formed above their:

a) Melting point
b) Glass transition temperature
c) Boiling point
d) Freezing point

Answer 1

Amorphous thermoplastics are formed above their Glass Transition Temperature (Tg). When the temperature rises above the Tg, they transition to a softer and more flexible state.

Step-by-step explanation:

Amorphous thermoplastics are formed above their Glass Transition Temperature (Tg). When the temperature of a thermoplastic rises above its Tg, the material transitions from a rigid, glassy state to a softer and more flexible state. This occurs because the molecules gain enough thermal kinetic energy to allow internal rotation and independent sliding, rendering them deformable.