Contribution of Different Pretreatments to the Thermal Stability and UV Resistance Performance of Cellulose Nanofiber Films

Hot water (HW), green liquor (GL), and sodium chlorite (SC) pretreatments were used to pretreat sugarcane bagasse (SCB) spruce (SP) then prepare cellulose nanofibers (CNFs) through high-pressure homogenization explore the effect of physicochemical properties on thermal stability ultraviolet (UV) resistance performance CNF films. The results indicated that lignin content HW-pretreated CNFs was higher than GL- SC-pretreated CNFs, hemicellulose lower CNFs. synergy impacted all SP films SCB pretreatment improved films, decreased highest SP-HW reached 392 °C, which 5.4% SP-SC Furthermore, different as follows: SCB-HW > SCB-GL SCB-SC SP-GL SP-SC. Green is an effective method Conclusively, this research provides a basic theory for preparation allows improvement in application management UV fields.