Due to the increasing demand for self-cleaning, anti-freezing and anti-corrosion properties on the surface of materials, researchers have recently devoted themselves to constructing super-hydrophobic surfaces on various substrates. The water contact angle at the interface can only reach 120° through the low surface energy substances (hydrocarbon or fluorine compound). It is usually necessary to construct sub-micron rough structures with equipment or nanoparticles to build a superhydrophobic interface. As a new type of green natural polymer material, nanocellulose has the advantages of large specific surface area, high aspect ratio, and strong chemical modification ability. Compared with the use of precision instruments to construct rough structures, use cellulose to constructed one-dimensional/two-dimensional cellulose-based materials with different morphologies in water solvents to adjust the roughness of interface, which is conforming to the needs of economic and environmental development. Furthermore, because of the microstructure and high activity of cellulose, it is suitable to construct the micro/nano structure. Therefore, this paper firstly constructed two cellulose-based materials, one-dimensional cellulose nanofibers loaded with nanoparticles and two-dimensional sheet-like cellulose coated with polytetrafluoroethylene. For one-dimensional cellulose, this article uses the interaction of hydrogen bonds between cellulose and silica to construct one-dimensional cellulose nanofiber materials loaded with hydrophobic nanoparticles through mechanical force. Under the condition of interface hydrophobicity induced by low surface energy substances, the influence of the content of nanoparticles on the morphology of cellulose and the wettability of the interface was studied. The study found that as the content of nanoparticles increases, the hydrophobicity of the interface increases. Finally, a superhydrophobic interface with a water contact angle of 152.6° and a contact angle hysteresis of 1.96° can be constructed. For two-dimensional cellulose, sheet-like cellulose of different sizes is prepared. The hydrophobicity of the interface can be improved by adding sheet-like cellulose, but it needs to be combined with one-dimensional cellulose-based materials to construct a micro/ nano-scale rough structure can give the interface super-hydrophobicity. This work provides a method for preparing a cellulose-based premix with a certain degree of roughness in an aqueous solvent, which is a simple and efficient way to improve the roughness of the interface and assist in regulating the hydrophilicity and hydrophobicity.
 

hydrophobic,Nano particles,cellulose nanofibrils,Sheet-like cellulose