Photodegradation of UHMWPE Compounded with Annatto and Beetroot Extracts

Figure 5

(1) Unexposed specimens, (2) exposed specimens for 21 days to UV radiation, and (3) exposed specimen for 42 days to UV radiation: (a) neat UHMWPE, (b) UHMWPE with annatto, and (c) UHMWPE with beet.

(a)

(b)

(c)