Research progress on the preparation of plant-based nanocellulose

<p indent="0mm">Biomass-based materials are of great significance in materials science and sustainable development, among which nanocellulose with a diameter of a few to tens of nanometers and a length of several microns is a class of emerging biomass-based nanomaterial. Nanocellulose not only retains the sustainable characteristics of plant fibers, but also has unique properties such as high aspect ratio, superior mechanical strength, good colloidal stability, and the ability to be assembled into complex structures, which can be used in high-value applications such as composite materials, optical devices, biomedicine, and special coatings. However, at present, there are some challenges regarding the nanocellulose preparation, such as limited product category, poor quality control, environmental issues, and high production cost. In this paper, different nanocellulose preparation methods are reviewed from the aspects of processing routes and product performance, so as to provide a more comprehensive understanding for their subsequent industrialization, and to inspire new ideas for the development of new biomass-based materials.