Volume 41 Issue 1
May  2022
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SHI Chun, LI Min-zhao, HUI Chao-mao, LIU Wei-yi, YANG Jing, YANG Hai-yan, SHI Zheng-jun. Preparation and Properties of Bamboo Films with Excellent UV Shielding Performance Based on NMI/DMSO Solvent System[J]. JOURNAL OF BAMBOO RESEARCH, 2022, 41(1): 35-41. doi: 10.12390/jbr2022044
Citation: SHI Chun, LI Min-zhao, HUI Chao-mao, LIU Wei-yi, YANG Jing, YANG Hai-yan, SHI Zheng-jun. Preparation and Properties of Bamboo Films with Excellent UV Shielding Performance Based on NMI/DMSO Solvent System[J]. JOURNAL OF BAMBOO RESEARCH, 2022, 41(1): 35-41. doi: 10.12390/jbr2022044

Preparation and Properties of Bamboo Films with Excellent UV Shielding Performance Based on NMI/DMSO Solvent System

doi: 10.12390/jbr2022044
  • Received Date: 2022-03-09
  • Publish Date: 2022-05-27
  • A scheme of full-component acetylation modification of bamboo based on 1-methylimidazole/dimethyl sulfoxide (NMI/DMSO) solvent system was constructed. Bamboo-based UV shielding films with superior plasticity and antibacterial properties were prepared by adding polyethylene glycol as plasticizer and loading silver nanoparticles onto the acetylated products as substrates. The properties of bamboo-based UV shielding films were systematically characterized by component content determination, infrared spectroscopy, mechanical property test, UV-vis transmittance test, antibacterial test, and so on. The results showed that the NMI/DMSO solvent system realized the homogeneous and simultaneous modification of bamboo components. The contents of lignin, cellulose and hemicellulose in the full-component acetylated films of Dendrocalamus sinicus were 22.5%, 63.3% and 13.2%, respectively. Obvious characteristic peaks of acetyl groups were detected in the infrared spectrum of the films. The lignin with UV shielding ability was completely retained and uniformly dispersed in the films. The bamboo base films, without any further modification, showed excellent UV shielding performance and completely blocked the ultraviolet radiation of the wavelengths between 200nm and 400nm. The tensile strength of bamboo-based UV shielding films modified by polyethylene glycol increased by 119%. After further adding silver nanoparticles, the antibacterial effect of the bamboo base films on common bacteria in the air and the soil was significantly improved. In addition, compared with bamboo base films, the tensile strength and the elongation at break of the bamboo-based PEG-Ag composite films increased by 137% and 366%, respectively. This work provided new ideas for the high-value utilization of bamboo and the development of new bamboo-based renewable materials.
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