Photodegradation of UHMWPE Compounded with Annatto and Beetroot Extracts

Table 1

Carbonyl, hydroxyl, and the one referent to band between 962 and 1200 cm⁻¹ indexes with the time exposure.

UHMWPE	Carbonyl index 1710–1740 cm^−1	Carbonyl index 1731–1735 cm^−1	Hydroxyl index 3010–3780 cm^−1	Band index; 962–1200 cm^−1
Powder
Neat powder	0.227	0.049	7.350	—
Annatto powder	0.200	—	—	0.178
Beet powder	0.539	0.181	472.9	87.89
Specimens
Neat 0 day	0.332	0.025	—	1.740
Neat 42 days	0.344	0.076	12.07	4.488
Annatto 0 day	0.101	0.013	4.102	3.803
Annatto 21 days	0.197	0.019	7.759	9.385
Annatto 42 days	0.591	0.073	6.097	8.499
Beet 0 days	0.541	0.093	12.70	2.863
Beet 42 days	0.269	0.009	4.849	4.214