Modification of Polypropylene Wax by Bonding Polyhexamethylene Guanidine and Its Antimicrobial Activity

Antimicrobial polypropylene wax (PPW-g-PHMG) was prepared via melting reaction between polyhexamethylene guanidine (PHMG) and polypropylene wax grafted maleic anhydride in a Hakke torque rheometer. TEM confirmed that PHMG was nano scale uniformly distributed in the PPW-g-PHMG. Antimicrobial results by diffusion method and membrane adhering method showed that the obtained PP/PPW-g-PHMG blends had excellent antimicrobial activity against E.coli. After being purified, PP/PPW-g-PHMG sample was a non leaching antimicrobial material with excellent and durable antimicrobial activity.