Ghasemian Lemraski, Ensieh, khajehali, Elaheh, Dashti, Maryam, Alibeigi, Shirin (2023). Preparation of Antimicrobial Hydrogel Film Based on Chitosan, Poly Vinyl Poly Pyrrolidone, and Copper Ions. *Journal of Applied Chemical Research*, 17(3), 8-20.