Efficient ultraviolet blocking film on the lignin-rich lignocellulosic nanofibril from bamboo

Qian Feng; Luzhen Wang; Zhangmin Wan; Xiangting Bu; Qiaoyun Deng; Dagang Li; Chuchu Chen; Zhaoyang Xu

doi:10.1016/j.ijbiomac.2023.126059

Efficient ultraviolet blocking film on the lignin-rich lignocellulosic nanofibril from bamboo

Int J Biol Macromol. 2023 Oct 1:250:126059. doi: 10.1016/j.ijbiomac.2023.126059. Epub 2023 Aug 5.

Authors

Qian Feng¹, Luzhen Wang¹, Zhangmin Wan², Xiangting Bu¹, Qiaoyun Deng¹, Dagang Li³, Chuchu Chen⁴, Zhaoyang Xu⁵

Affiliations

¹ College of Material Science and Engineering, Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing, Jiangsu Province 210037, PR China.
² Departments of Chemical and Biological Engineering, Chemistry and Wood Science, The University of British Columbia, 2360 East Mall, Vancouver, BC V6T 1Z3, Canada.
³ College of Material Science and Engineering, Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing, Jiangsu Province 210037, PR China. Electronic address: njfuldg@163.com.
⁴ College of Material Science and Engineering, Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing, Jiangsu Province 210037, PR China. Electronic address: chuchu_chen@njfu.edu.cn.
⁵ College of Material Science and Engineering, Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing, Jiangsu Province 210037, PR China. Electronic address: zhaoyangxu@njfu.edu.cn.

PMID: 37544557
DOI: 10.1016/j.ijbiomac.2023.126059

Abstract

The ultraviolet (UV) blocking performance of current bio-based devices is always limited by delignification and exploited chemical treatment. Lignocellulosic nanofibril (LCNF) is a promising green alternative that could efficiently impede UV radiation. Herein, we proposed a robust LCNF film that achieved 99.8 ± 0.19 % UVB blocking, 96.1 ± 0.23 % UVA blocking, and was highly transparent without complex chemical modification. Compared to conventional lignin composites, this LCNF method involves 29.5 ± 2.31 % lignin content directly extracted from bamboo as a broad-spectrum sun blocker. This bamboo-based LCNF film revealed an excellent tensile strength of 94.9 ± 3.6 MPa and outstanding stability, adapting to the natural environment's variability. The residual hemicellulose could also embed the link between lignin and cellulose, confirming high lignin content in the network. The connection between lignin and hemicelluloses in the cellulose network was explored and described for the fibrillation of lignocellulosic nanofibrils. This research highlights the promising development of LCNFs for UV protection and bio-based solar absorption materials.

Keywords: Environment resistance; Lignin-rich lignocellulosic nanofibril; Ultraviolet protection.