Thermoplastic biomass transparent films directly fabricated by chitosan nanospheres

Abstract

Traditional fabrication methods for chitosan products limited in melt forming temperature higher than degradation temperature are hard to be directly applied to the manufacture of green transparent electronic substrates. Here, we proposed an innovative principle of all-green manufacture that surface molecular chains of chitosan nanospheres were melted at 120 °C and entangled under 8 MPa according to high molecules activity of Nano-effect on chitosan nanospheres surface, result in applicable mechanical performances (Hardness, 0.27 GPa; Modulus, 3.83 GPa). The optimum optical performance of chitosan substrate was 58% at visible light (400 nm ~ 800 nm). Additionally, chitosan nanospheres had been successfully fabricated as substrates of interdigital electrode sensors. Therefore, our innovative strategy provides a new processing concept of fundamental scientific principle, and directly promote the industrialization of chitosan in biosensors, thin film transistors, and all solid state supercapacitors, etc.