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Enhancing Physiochemical Properties of Chitosan Films Through Photo-crosslinking by Riboflavin
Shengyu Zhu,Jiliu Pei,Yukang Song,Yu Liu,Feng Xue,Xiaohui Xiong,Chen Li 한국섬유공학회 2022 Fibers and polymers Vol.23 No.10
This study aimed to improve the physicochemical properties of chitosan (CS) film by riboflavin (RF)-inducedcross-linking under ultraviolet (UV) light for different times (0, 2, 4, 6 h). It was found that the water vapor resistance, tensilestrength, optical property, and thermal stability of the film were significantly enhanced under RF-induced photo-crosslinking,especially when illuminated for 6 h. Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD) verified themolecular bonding of CS and RF, as well as scanning electron microscope (SEM) showed a tighter and more uniform filmstructure was formed through UV crosslinking. Thus, the CS-RF films have the potential to replace petrochemical materialsas a novel type of environmentally friendly packaging material.