Fig. 6: Photocatalytic degradation of polyethylene-TiO2 composites.

a The in situ generated sample obtained using Ni-ONa-TiO2. b The sample obtained by blending 95% high-molecular-weight polyethylene with 5 wt% TiO2. c The sample obtained by blending 95% commercial polyethylene with 5 wt% TiO2. d Sample prepared from the copolymerization of ethylene and methyl 10-undecylenate using Ni-ONa-TiO2; polar monomer incorporation of 0.6%.