Gamma Rays Induced Modification in Ultrahigh Molecular Weight Polyethylene (UHMWPE)

Table 1

Absorption edge and energy gap variation in virgin and irradiated samples of UHMWPE at different doses.

Dose (kGy)	Absorption edge (λg) (nm)	Energy gap (Eg) (eV)	Urbach’s energy (eV)
0	387	2.54	0.071
16	390	2.53	0.061
110	389	2.10	0.94
300	397	1.73	0.40