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Fabrication of multidimensional bio-nanomaterials from nanocellulose oxalate

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Abstract

Nanocelluloses and cellulose nanomaterials derived from natural resources are a group of ideal platform materials for advanced applications. However, their synthesis through sustainable and facile processes to achieve the required properties are still challenging. Here, we prepare the nanocellulose oxalate (n-COX) from cotton with outstanding physicochemical properties by defining the optimal oxalic acid pretreatment conditions. Thus-obtained n-COX with unique 1D nanofiber shape as a platform material is further processed to various high-performance multidimensional bio-nanomaterials through several simple yet effective strategies. First, 2D n-COX films prepared through a casting-drying method show comparable or even better transparency and tensile strength than those made from other types of nanocelluloses. Second, 3D n-COX hydrogels/aerogels fabricated by a molding-crosslinking approach demonstrate good shape stability, well-preserved nanoporous networks, and qualified mechanical properties. Third, n-COX-derived bioinks display improved printability and fidelity, resulting in better size-preserving and shape-control of the 3D-bioprinted scaffolds. We expect this work could offer new insights on engineering natural cellulose and using n-COX as a platform material for further advanced fabrication, and thus, open up application potentials of this new nanocellulose.

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The datasets used and/or analysed during the current study available from the corresponding author on reasonable request.

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Acknowledgments

Yadong Zhao is grateful for the financial support from Zhejiang Provincial Natural Science Foundation for Distinguished Young Scholars of China (No. LR23C160001), Zhejiang Ocean University (11135091221) and Science and Technology Planning Project of Zhoushan of China (No. 2022C41001).

Funding

Yadong Zhao is grateful for the financial support from Zhejiang Provincial Natural Science Foundation for Distinguished Young Scholars of China (No. LR23C160001), Zhejiang Ocean University (11135091221) and Science and Technology Planning Project of Zhoushan of China (No. 2022C41001).

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All authors contributed to the study conception and design. Material preparation, data collection and analysis were performed by YZ, JL and RZ. The first draft of the manuscript was written by YZ and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.

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Correspondence to Yadong Zhao or Rusen Zhou.

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Zhao, Y., Li, J., Yu, Q. et al. Fabrication of multidimensional bio-nanomaterials from nanocellulose oxalate. Cellulose 30, 2147–2163 (2023). https://doi.org/10.1007/s10570-022-05019-1

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  • DOI: https://doi.org/10.1007/s10570-022-05019-1

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