Fig. 4
Anti-oxidation evaluation of as-prepared polymers. Photographs of the reaction of DPPH reagent (a) and Folin-Ciocalteu reagent (c) with the test samples including p(MPC), p(MPC1-co-DMA1), p(MPC3-co-DMA1) and p(MPC6-co-DMA1). DPPH scavenging activity (b) and total phenolics content (d) of the various samples were analyzed by UV-VIS spectrophotometry. Values are mean ± SD (n = 5). *p < 0.05 vs. all groups. The blank group: without p(MPC-co-DMA) sample