Investigations on the aging behavior of transparent bioplastics for optical applications

In this study,the optical properties of transparent bioplastics have been investigated.The long-term technological goal is to establish biopolymers in a new market segment for demanding optical applications and to contribute to a more sustainable economy.A collection of transparent bioplastics has been tested with respect to the long-term stability and the possibility of an application in optical components for LED lighting.The focus of materials testing was on the influence of short wavelength visible radiation as well as thermal loads.The results show,that some materials may be candidates for subsequent feasibility studies.To the best of our knowledge,the application of such polymers in complex technical products and in particular in luminaires has not yet been realized.The use of bio-based plastics for optical components therefore represents a novelty and has a high development potential.