▎ 摘　　要

NOVELTY - PO film coating liquid comprises 10-50 wt.% nano aluminum sol, 5-15 wt.% surfactant, 1-10 wt.% film forming agent and pure water (remaining amount), the grain diameter of the nano aluminum sol is 30-100 nm, the raw material of the surfactant comprises at least two of polyvinylpyrrolidone, hydroxypropyl methyl cellulose, Nineal (RTM: Pneumatic clamping element) 6501, polyoxyethylene ether, emulsifier OP series, allyl alcohol polyoxyethylene polyoxypropylene ether. USE - Used as PO film coating liquid. ADVANTAGE - The PO film coating liquid uses a cross-linking agent to cross-link graphene and chitosan to prepare a hemostatic material, which improves the mechanical strength of the chitosan polymer and improves the hemostatic performance and antibacterial effect of the hemostatic material. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing the PO film coating liquid, comprising (i) mixing the raw materials of the surfactant uniformly, mixinguniformly to obtain the mixed surfactant; (ii) mixing the film forming agent with the rest pure water to dilute to obtain the diluted film forming agent; (iii) adding nano aluminum sol in the surfactant after mixing, mixing uniformly to obtain the first mixture; and (iv) adding the diluted film-forming agent in the first mixture, and mixing to obtain the PO film coating liquid.