As a new bio-based material, nanocellulose has shown broad application potential in many fields due to its inherent advantages such as renewable, degradable, high specific surface area, and excellent mechanical properties. However, the surface of natural nanocellulose is rich in hydrophilic hydroxyl groups, which easily absorbs water and swells, and is difficult to be compatible with non-polar materials, which greatly limits its application in scenarios such as waterproofing, oil-proofing, and oily wastewater treatment. Giving nanocellulose hydrophobicity through scientific modification and preparation processes can effectively expand its application boundaries and achieve high-value utilization of materials. It is also a current research hotspot and industrial development focus in the field of nanomaterials. The following is a detailed introduction to the core preparation technology, process points and application directions of hydrophobic nanocellulose based on the industry's cutting-edge technology and corporate practical experience, providing reference for technology research and development and industrial applications in related fields. 1. Core Principles of Preparation The core of preparation of hydrophobic nanocellulose is to prepare nanofibers through physical, chemical or mechanochemical methods.

In the long journey of human exploration of materials science, microorganisms in nature have always been an important source of inspiration. Bacterial Cellulose (BC), as a natural polymer material synthesized by microorganisms, is becoming a key force in solving the pollution dilemma of traditional materials and promoting the green transformation of the industry with its unique structural properties and sustainable production advantages. From laboratory test tubes to industrial reactors, this kind of nanomaterial woven by microorganisms is writing the dual evolutionary history of materials technology and ecological civilization. 1. Structural miracles of the microscopic world: Naturally evolved precision-designed bacterial cellulose is synthesized by microorganisms such as Acetobacter and Acetobacter xylin through the enzyme system on the cell membrane. Its molecular structure shows amazing order: · Nanoscale fiber network: The diameter of a single fiber is only 20-100 nanometers, forming a three-dimensional network structure with a porosity of over 90%, and a specific surface area of ​​1% that of plant fibers.

In the exploration of materials science, scientists are always looking for new materials with excellent performance and environmental sustainability. In recent years, a substance called nanocellulose has gradually come into public view. With its unique physical and chemical properties and broad application prospects, it has been hailed as 'the most potential green nanomaterial in the 21st century.' What is nanocellulose? Nanocellulose is a nanoscale functional material extracted from natural cellulose. Natural cellulose widely exists in plants, bacteria and even some marine organisms. It is the most widely distributed and abundant natural polymer organic matter in nature. Nanocellulose is obtained when we treat cellulose through chemical, physical or biological methods to reduce its diameter to between 1 and 100 nanometers and its length from hundreds of nanometers to several micrometers. According to different structures and preparation methods, nanocellulose is mainly divided into three categories: 1. Cellulose nanocrystals (CNC): remove fibers through strong acid hydrolysis