STUDY ON PREPARATION OF ANTIBACTERIAL POLYMER FILM BASED ON POLYLACTIDE AND GREEN TEA POLYPHENOLS

Abstract

This paper presents the results of study on preparation and properties of
antibacterial polymer film based on polylactic acid (PLA) and green tea
polyphenols. The PLA/polyphenol composite films with different ratio were
prepared by solvent evaporation method. The mechanical properties, infrared
spectra, moisture content and antibacterial ability of the composite films were
evaluated. The obtained results show that PLA/polyphenol composite film
prepared at the ratio of PLA/polyphenols of 97/3 had the best tensile strength
and elongation at break as compared to PLA film. The composite films could
against to S. aureus and E. coli strains.