Table 2.

Structural and mechanical characteristics of polyethylenes and of their weld

Specimen	Degree of crystallinity (DSC) %	Degree of crystallinity (WAXS) %	Crystallites size L 1 (2 θ  = 21.2°) nm	Crystallites size L 2 (2 θ  = 23.6°) nm	Tensile strength MPa	Relative tensile strength %
PE-80	42	56	7.2	7.2	19.6	100
PE-100	51	57	7.2	7.2	23.1	100
PE-80/PE-100 weld	53	66	7.2	8.0	Destroyed on the basic material	>100