Efficient preparation of holocellulose nanofibers and their reinforcement potential

Preparation of cellulose nanofibers or nanocrystals with large-scale by traditional methods is facing a scientific challenge due to the complex technological process, excessive energy consumption and environmental pollution. Herein, the novel holocellulose nanofibers (HNFs) were obtained from differ...

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Bibliographic Details
Published in:Cellulose (London) 2022-10, Vol.29 (15), p.8229-8242
Main Authors: Ding, Qiqi, Rao, Jun, Lv, Ziwen, Gong, Xue, Lü, Baozhong, Guan, Ying, Ren, Junli, Peng, Feng
Format: Article
Language:English
Subjects:
Bamboo
Biomass
Bioorganic Chemistry
Cellulose
Cellulose fibers
Ceramics
Chemistry
Chemistry and Materials Science
Composite materials
Composites
Core-shell structure
Energy consumption
Functional materials
Glass
Lignocellulose
Modulus of elasticity
Nanocrystals
Nanofibers
Natural Materials
Organic Chemistry
Original Research
Oxidation
Physical Chemistry
Polymer Sciences
Polyvinyl alcohol
Sustainable Development
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Summary:Preparation of cellulose nanofibers or nanocrystals with large-scale by traditional methods is facing a scientific challenge due to the complex technological process, excessive energy consumption and environmental pollution. Herein, the novel holocellulose nanofibers (HNFs) were obtained from different lignocellulosic biomass, including wheat straw, bamboo ( Neosinocalamus affinis) , hardwood ( Populus nigra ), and softwood ( Monterey pine ) by mechanical or TEMPO-mediated oxidation method. Compared with TEMPO-mediated oxidation, HNFs prepared by mechanical method exhibit higher hemicellulose content, well preserved natural structure (a core-shell structure), and high crystallinity. Significantly, the mechanical processing is simple and more suitable for large-scale production. After introducing HNFs, the mechanical property of polyvinyl alcohol (PVA) film increased dramatically. In particular, the Young’s modulus of HNFs/PVA composite film is 25.12 times higher than that of pure PVA. These results suggest that HNFs can be used as versatile reinforcement to construct composite materials with excellent performance. Graphical abstract A novel nano-holocellulose could be replace cellulose to construct functional material was prepared by mechanical or TEMPO-mediated oxidation methods from different lignocellulosic biomass.
ISSN:0969-0239
1572-882X
DOI:10.1007/s10570-022-04765-6