Enhancing Physiochemical Properties of Chitosan Films Through Photo-crosslinking by Riboflavin

This study aimed to improve the physicochemical properties of chitosan (CS) film by riboflavin (RF)-induced cross-linking under ultraviolet (UV) light for different times (0, 2, 4, 6 h). It was found that the water vapor resistance, tensile strength, optical property, and thermal stability of the fi...

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Bibliographic Details
Published in:Fibers and polymers 2022-10, Vol.23 (10), p.2707-2716
Main Authors: Zhu, Shengyu, Pei, Jiliu, Song, Yukang, Liu, Yu, Xue, Feng, Xiong, Xiaohui, Li, Chen
Format: Article
Language:English
Subjects:
Chemical bonds
Chemistry
Chemistry and Materials Science
Chitosan
Crosslinking
Fourier transforms
Optical properties
Physiochemistry
Polymer Sciences
Radio frequency
Riboflavin
Tensile strength
Thermal stability
Vapor resistance
Water vapor
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Summary:This study aimed to improve the physicochemical properties of chitosan (CS) film by riboflavin (RF)-induced cross-linking under ultraviolet (UV) light for different times (0, 2, 4, 6 h). It was found that the water vapor resistance, tensile strength, 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 the molecular bonding of CS and RF, as well as scanning electron microscope (SEM) showed a tighter and more uniform film structure was formed through UV crosslinking. Thus, the CS-RF films have the potential to replace petrochemical materials as a novel type of environmentally friendly packaging material.
ISSN:1229-9197
1875-0052
DOI:10.1007/s12221-022-0278-0