Irradiation of polymer surfaces with low energy ions promotes adhesion to metals,why?

Question

This question is related to research. I am pesuing Ph.D.

Answer 1

I am guessing at this point, but I have some experience to back it up. Low energy ions attack the polymer surface creating two effects: etching and oxidation. The etching causes destroyed polymer chains that increase surface area and roughness. The oxidation attaches electron-filled oxygen groups that is attracted to metal.