What controls the Young's modulus in the viscoelastic regime of an amorphous polymer?
Sliding between short segments of polymer chains
Stretching of molecular bonds
Melting of secondary bands, and an increase in free volume
Second derivative of the energy-separation curve, E∝d2Udϵ2
Changes in entropy associated with changes in molecular configuration, E=−TΩd2Sdϵ2=3nvkbT
Homework Posting Tips
Please show your work. Tutors will not do your homework for you. Please show your work for any question that you are posting.