Isolation and functionalization of nanocellulose-based bamboo origin

Nanocellulose derived from bamboo has garnered significant attention in recent years due to its exceptional properties and sustainable nature. Nanocellulose offers unique characteristics such as high surface area, biocompatibility and renewability, making it an attractive material for various applications. The primary challenge lies in effectively isolating nanocellulose at an industrial scale while maintaining cost efficiency and consistent quality. Additionally, the lack of standardized methods and protocols for characterizing nanocellulose poses a significant hurdle for its widespread adoption, which must be addressed to fully leverage its potential. To address these challenges, various isolation techniques, including mechanical, chemical and enzymatic methods, have been explored. Mechanical methods involve high-shear homogenization and ultrasonication, while chemical methods utilize acid hydrolysis and oxidation processes. Enzymatic methods, though less common, offer a more environmentally friendly approach. These techniques offer solutions to optimize the extraction process, ensuring high yield and quality of nanocellulose. Functionalization of nanocellulose is another critical aspect that enhances its properties and broadens its applicability. Chemical modifications, such as TEMPO-mediated oxidation and silanization, improve hydrophilicity, thermal stability and reactivity. Physical methods, including blending and coating, introduce new functionalities and improve material compatibility. Biological modifications, such as bioconjugation with enzymes or peptides, enable the creation of bioactive nanocellulose for specialized applications. These functionalization techniques enable the customization of nanocellulose for specific uses, such as advanced materials for biomedical applications, sustainable packaging, high-performance textiles and environmental remediation. The objectives of this review are to provide a comprehensive understanding of the current state of nanocellulose isolation and functionalization, identify the challenges and opportunities in the field and propose future directions for research and development. By addressing these aspects, this review underscores the potential of bamboo-derived nanocellulose to drive innovation and sustainability across various sectors. Future directions include improving production techniques, developing multifunctional nanocellulose materials, integrating circular economy principles and fostering collaborative research efforts. Ultimately, this review aims to contribute to a more sustainable and technologically advanced future by unlocking the full potential of nanocellulose.