What controls the Young's modulus in the rubbery 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
2 answers
Changes in entropy associated with changes in molecular configuration, E=−TÙd2Sdϵ2=3nvkbT
no
2 answers