▎ 摘　　要

NOVELTY - Preparing poly(N-isopropylacrylamide)/carboxylated chitosan/graphene oxide ternary composite film comprises e.g. (i) mixing monomer N-isopropylacrylamide and crosslinking agent N,N'-methylene bis(acrylamide), initiator sodium hydrogen sulfite with deionized water as reaction solvent under ice bath, then adding carboxylated chitosan, passing nitrogen and mechanically stirring to obtain binary mixed solution of poly-N-isopropylacrylamide/carboxylated chitosan, (ii) adding distilled water into graphene oxide at room temperature, and ultrasonically dispersing to form graphene oxide dispersion solution, adding graphene oxide dispersion solution into binary mixed solution, mechanically stirring to obtain poly(N-isopropylacrylamide)/carboxylated chitosan/graphene oxide ternary mixed solution, and (iii) adding initiator potassium persulfate into ternary mixed solution, cross-linking calcium chloride, blocking the reaction, dialyzing and drying. USE - The method is useful for preparing poly(N-isopropylacrylamide)/carboxylated chitosan/graphene oxide ternary composite film. ADVANTAGE - The method has low cost, simple preparation process and low equipment requirements.