Abstract
We prepared lignin-containing cellulose nanofibers (LCNFs) from Brassica campestris stem and report the properties of the LCNF films. Partial removal of lignin was achieved by oxidizing the stem, followed by ball-milling and high-intensity ultrasonic treatment. Reducing the lignin content from 26 to 20% in the starting material significantly improved the defibrillation efficiency of cellulose. The amount of residual lignin had little impact on the mechanical properties and water contact angle of LCNF films, but showed high UV-absorbance.
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Acknowledgments
This study was supported by the National Natural Science Foundation of China (Nos. 52103132, 52073291), the Natural Science Foundation of Hebei Province (No. B2022112002), and the Opening Foundation of Hainan Degradable Plastics Technology Innovation Center.
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DH and PX: investigation, conceptualization, methodology, validation, and writing—original draft; MW: supervision, funding acquisition, and writing—review and editing; MMR, SK and YH: validation, methodology, and writing—review and editing.
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Huang, D., Xiao, P., Rahman, M.M. et al. Defibrillation and film formation from partially delignified Brassica campestris stem. Cellulose 30, 8387–8393 (2023). https://doi.org/10.1007/s10570-023-05437-9
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DOI: https://doi.org/10.1007/s10570-023-05437-9