Mussel adhesive protein can adhere to almost all kinds of surfaces with high strength

toughness

and resistance to water or moisture. This environmentally friendly

efficient adhesive in mild condition has aroused interests of researchers

especially in how it works and where it can be used. Most of the studies have demonstrated that the strong adhesion ability of mussel is associated with a large amount of 3

4-dihydroxyphenyalanine(DOPA) in its adhesion protein. Inspired by the method that mussel adhesive proteins works

scientists found it possible to use DA instead of DOPA to achieve similar adhesion

because DA molecule has similar functional groups to DOPA as well as the similar molecular structure after polymerization. In this paper

the adhesive mechanism of mussel-inspired bio-mimic polymer

PDA

was introduced

and the applications of its derivatives PDA and in different fields

such as surface modification

catalyst

bioantifouling and biomedicine was reviewed.