The plant polyphenols also named as tannin is one kind the polyphenolic compounds with good biocompatibility and biodegradation ability. Because the polyhydric phenol structure is capable to cause it to take place the condensation reaction with the aldehyde

and utilize its hydrogen bond interact with other polymer groups

the application of the polyphenol in polymer is thus provided a possibility for later with different functions. Based on the literatures

this paper reviewed the application of the plant polyphenols in some polymer materials

e. g. PU

phenol resins

PHB

PCL

PLA and some other natural polymers

relating to the addition of functions on anti - bacteria

biodegradation and anti -oxidization.