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Water barrier properties of polyimide films *.
| Sample | Transmission coefficient/g·cm·(cm2·s·Pa)−1 | WVTR/g·(m2·24 h)−1 |
|---|---|---|
| OPI | 1.261 × 10−12 | 8.2365 |
| 7O3DPI | 8.063 × 10−13 | 5.2683 |
| 5O5DPI | 5.282 × 10−13 | 3.4515 |
| 3O7DPI | 4.923 × 10−13 | 3.2167 |
| DPI | 1.327 × 10−13 | 0.8670 |
* Samples are 50 μm in thickness, testing at 37.8 °C and 85% RH for 18 h.
