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Frequency (ωcross-over) and modulus (Gcross-over) values at the crossing of the storage and loss moduli of the PUU PSAs made with different amino-alcohol chain extenders. Frequency sweep plate–plate rheology experiments.
| PUU PSA | ωcross-over (rad/s) | Gcross-over (kPa) |
|---|---|---|
| PUU-1OH PSA | - | - |
| PUU-2OH PSA | 13.65 | 277 |
| PUU-3OH PSA | 0.01 | 869 |
