I want to determine the glass transition temperature (Tg) of a semicrystalline polymer. one of the possible way to determine is by calculating cohesive energy density as a function of temperature. 

Module > forcite > calculation > task (Cohesive energy density) > run

but by using this approach how can I get cohesive energy density at different temperatures?

Similary, how can I get mechanical properties at different temperature?

Module > forcite > calculation > task (mechanical properties) > run

I hope the question is understandable.

Thankyou.