Asked by zxcv
What controls the Young's modulus in the glassy 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
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
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E= 3nkvbT
given in lectures
given in lectures
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