Plastic products bring convenience to people’s life, but the plastic garbage which is difficult to degrade will have adverse effects on the ecology. Recently, inspired by natural shells, academician Yu Shuhong of University of science and technology of China has developed a new type of film material, which shows mechanical and optical properties far better than traditional plastics in terms of strength, toughness and light transmittance. It can be degraded without pollution after being buried in the soil for about two months. It is expected to become an ideal material for flexible electronic devices and other fields. Shell is a kind of natural material with excellent performance, which is made of “brick mud” structure layer by layer. Recently, academician Yu Shuhong’s team successfully constructed a “brick fiber” shell like layered structure by using two natural components, namely, nano clay sheet and bacterial cellulose, and developed a high-performance composite film material by aerosol assisted biosynthesis. < / P > < p > “simply put, bacterial cellulose is a substance secreted by bacteria after” eating “glucose, which is thin and long like a rope.” Guan Qingfang, a member of the research team and a postdoctoral fellow at the University of science and technology of China, said that combining it with flake clay was like “binding layers of bricks with a rope net” to form a new material with strong performance. The experimental results show that the strength of the new film material reaches 482 MPa, which is more than 6 times of the commercial plastic film. It has good flexibility and can be folded into various shapes without obvious damage after unfolding. The new material also has excellent light transmittance, achieving a high transparency of more than 73% and a high optical haze of more than 80% in the visible light range of the human eye. < / P > < p > “like ground glass, it allows light to penetrate but not glare. This” uniformity “is very important for making mobile phone screens and other devices Guan Qingfang said. The traditional plastic film is easy to soften and deform at high temperature. In contrast, this new material has excellent thermal stability. When the temperature changes 100 ℃, the size change is only 3 / 10000, and the structure and performance are stable at 250 ℃. < / P > < p > more importantly, the unique raw material composition makes the new material green and pollution-free in the whole life cycle, and bacterial cellulose will degrade naturally in soil about two months. Recently, substance, an academic journal of cell publishing group, published the research results. It is understood that this new material is very competitive in the fields of flexible electronic devices, new displays and photoelectric conversion due to its advantages of high performance, low cost and simple process. At present, the scientific research team is actively promoting the application and industrialization. Global Tech