Table 1 Structural characteristics of PE-80 and PE-100 polyethylene and of PE-80/PE-100 welded joint
Specimen | Crystallinity level (DSC), % | Crystallinity level (WAXS), % | Crystallites size L (2θ max = 21.2°), nm | Crystallites size L (2θ max = 23.6°), nm |
|---|---|---|---|---|
PE-80 | 42 | 56 | 7.2 | 7.2 |
PE-100 | 51 | 57 | 7.2 | 7.2 |
PE-80/ PE-100 welded joint | 53 | – | 7.2* | 8.0* |
PE-80/ PE-100 welded joint (randomized) | – | 56 | 7.1 | 7.1 |
1 year PE-80/ PE-100 welded joint | 54 | – | – | – |
1 year PE-80/ PE-100 welded joint (randomized) | – | 56 | 7.1 | 7.1 |