Study on the characteristic of polylactide-poly ( ε-caprolactone) /tea polyphenol composite film

Polylactide- poly ( ε- caprolactone) /tea polyphenol composite film was prepared with polylactide- poly ( ε-caprolactone) copolymer and tea polyphenol.Physiochemical properties and antioxidant abilities were tested.FTIR results revealed that there were interactions between tea polyphenol and polylactide- poly ( ε-caprolactone) copolymer.SEM images showed that tea polyphenol homodispersed in matrix.The results indicated that water vapor barrier properties and transparency of composite films were decreased, flexibility and antioxidant abilities were improved.