UV shielding bio-derived furanic polymers

Abstract

UV shielding bio-derived furanic polymers (BFP) and UV-shielding composite films containing BFP having another polymer of natural or synthetic origin at varying concentration with high thermal stability, mechanical stability and elasticity are prepared through solvent evaporation casting. A process for preparing BFP having varying physicochemical properties can be carried out via dehydration of various biomass saccharides in different solvents employing various catalysts. The resulting brown-colored films show excellent UV shielding in the region 200 nm to 400 nm and exhibit high optical transparency. The UV shielding efficiency of the film increases with an increase in its treatment temperature. The films are stable and durable in terms of mechanical stability and elasticity even after exposing to harsh conditions without affecting their UV-shielding efficiency.

Dependencies are inferred from the claim text.