Cellulose/Poly(meta-phenylene isophthalamide) Light-Management Films with High Antiultraviolet and Tunable Haze Performances

Light-management films are usually fabricated from the petrochemical-based polymers, and developing renewable and biodegradable cellulose-based light-management films with high transparence, tunable haze, and UV-blocking capacity by a facile and large-scale production method is still challenging. Herein, cellulose/poly(meta-phenylene isophthalamide) (PMIA) light-management films were manufactured by simple blending, which was fit for the large-scale production of cellulose/PMIA films. It was found that the cellulose/PMIA composite films showed tunable haze (14–55%), high transparence (>78%), UV-blocking capacity, and irradiation stability. In addition, the elongation at break and tensile strength of the composite film can be improved to 23.78% and 55.90 MPa compared to those of the native cellulose film (21.94% and 45.83 MPa), ascribed to copious hydrogen bonds between PMIA and cellulose molecules. Hence, the cellulose/PMIA light-management films with enhanced optical and mechanical properties were fabricated successfully, and they showed great potential in flexible displays and energy-efficient buildings.