Figure 12. Schematic illustration of the proposed mechanisms on polyphenol binding and HeLa cell adhesion on the copolymer films.

(A) The cell can easily spread on the PP:PPR coating because the RGD motifs are accessible. (B) EGCg molecules bind to the PP:PPR chains, block the RGD motifs and inhibit cell adhesion. The observed morphologies of the cells can be also seen in the images taken by phase contrast microscopy.