Table 2 The ultraviolet protection factor (UPF) and percentages of UVA and UVB radiation blocking.

From: UV-shielding photochromic composite films based on nanocrystalline cellulose modified with CeO2 and WO3 nanoparticles

Sample

UVA blocking

UVB blocking

UPF (UVA)

CNC

68 ± 1

90 ± 6

3.4 ± 0.1

CeO2/WO3/CNC (1/1/10)

99 ± 0.1

100 ± 0.001

450 ± 33

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