A method for producing a polymer film includes: obtaining a load graph representing a functional relationship between a weight percentage of tissue forming nanoparticles in a polymer film and a maximum load of that polymer film； obtaining a stress graph representing a functional relationship between the weight percentage of tissue forming nanoparticles in a polymer film and maximum stress of that polymer film； determining a first weight percentage corresponding to a peak of the load graph and determining a second weight percentage corresponding to a peak of the stress graph； determining an optimal weight percentage based on the first and second weight percentage values； and producing a polymer film having tissue forming nanoparticles at the optimal weight percentage.
