Measured glass transition temperature (Tg), tan δ peak and storage modulus values at various temperatures for TPO, POE and TPO–POE blends.
| TPO/POE | T g (°C) | Tan δ peak value | Storage modulus (MPa) | ||||||
|---|---|---|---|---|---|---|---|---|---|
| PP | EPDM | POE | PP | POE | EPDM | at Tg POE | at Tg TPO | at 20 °C | |
| POE | — | — | −31.5 | — | 0.460 | — | 173 | — | 15 |
| TPO | 25.5 | −36.3 | — | 0.048 | — | 0.054 | 4816 | 2826 | 3065 |
| TPO + 10%POE | 25.3 | −35.0 | 0.059 | 0.070 | 3592 | 2140 | 2313 | ||
| TPO + 20%POE | 26.8 | −33.9 | 0.060 | 0.083 | 2831 | 1571 | 1683 | ||
| TPO + 30%POE | 28.1 | −31.6 | 0.070 | 0.115 | 1776 | 762 | 885 | ||
| TPO + 40%POE | 27.7 | −32.7 | 0.075 | 0.132 | 1580 | 541 | 642 | ||
| TPO + 50%POE | —a | −30.8 | —a | 0.180 | 737 | —a | 242 | ||
The peak point does not appear.