Plastic waste has caused great harm to the ecological environment and human health. It is urgent to develop a new generation of sustainable plastic alternative materials. The reporter learned from the University of science and technology of China that academician Yu Shuhong of the university has successfully developed a kind of super strong, super tough and transparent high-performance sustainable shell like composite film, and successfully constructed a “brick fiber” shell like layered structure, which makes the film show mechanical properties far beyond the traditional plastics and show more outstanding comprehensive properties than the plastic film. The research results were published in the journal substance. According to the introduction, this kind of high transparent and high haze film benefits from the dense shell like “brick fiber” structure, which ensures the light transmission effect through the filling of the internal pores of the film, and ensures the optical haze through the interface scattering between the nano sheet and cellulose, so as to realize the high transparency of more than 73% and the high optics of more than 80% in the visible spectral wavelength range of 370-780 nm Haze. At the same time, the film also has excellent properties of high strength and high toughness, which are 6 times and 3 times higher than commercial pet plastic film respectively. In addition, the three-dimensional network of nanofibers and the “brick fiber” shell like structure design can effectively inhibit the crack propagation. Meanwhile, the fiber thinning effect can improve the hydrogen bond density between the fibers in the material, and promote the fiber slip during the tensile process of the film, so that the material has high strength and high toughness. Moreover, the structure and properties of the film are stable at 250 ℃, and it has better service performance than plastic film in extreme environment. < / P > < p > according to the researchers, the biomimetic film material integrates excellent optical, mechanical and thermal properties, and can be completely biodegradable under natural conditions, which overcomes the problem that waste plastics are difficult to degrade, and meets the requirements of optical transparency, flexibility, low cost and dimensional stability at high and low temperatures, and at the same time, it has a full life cycle In the future, it will be widely used in the field of flexible electronic devices.