Core summary: Bacterial Cellulose (BC) is a natural nano-biopolymer synthesized by microorganisms. It has the advantages of high purity, high crystallinity, green degradability, etc. It is widely used in medical and health, food industry, high-end manufacturing, green packaging and other fields. It meets the 'double carbon' goal and is the core material to promote green innovation and upgrading of the industry. 1. What is bacterial cellulose (BC)? Bacterial cellulose is a natural nano-biopolymer synthesized by fermentation of acetic acid bacteria and other microorganisms using D-glucose as a carbon source. Compared with traditional plant cellulose, it has irreplaceable core advantages and is a generally recognized as safe (GRAS) material recognized by the US FDA. Its core characteristics are outstanding: purity is as high as 99%, crystallinity is 60%-90%, fiber diameter is only 20-100 nanometers, forming a three-dimensional network structure with high porosity; it has excellent mechanical properties and water-holding capacity, and the synthesis process is low

At a critical juncture in the packaging industry's transition to low-carbon and degradable packaging, nanocellulose has become the core breakthrough to solve the industry's pain points by virtue of its natural properties and extraordinary performance at the microscopic scale. It has the advantages of high strength, high barrier, and full degradation. There is no need to choose between environmental protection and practicality, and it is promoting the green packaging industry to achieve a qualitative leap. Among them, Nanjing Tianlu Nano Technology Co., Ltd. is deeply involved in this field, focusing on the research and development, production and sales of nanocellulose. It uses mature technology and large-scale production capacity to help its industrialization and application upgrade in the field of green packaging. 1. Core characteristics of nanocellulose Nanocellulose is a nanoscale fiber aggregate separated from natural plant raw materials such as wood and straw through processes such as chemical hydrolysis and mechanical grinding. It mainly includes cellulose nanocrystals (CNC) and cellulose nanofibrils (CNF). Its core characteristics perfectly meet the needs of packaging materials: • Ultra-high mechanical properties: Young's modulus can reach 140

With the deep integration of materials science and optical engineering, nanocellulose has become the core substrate for building high-performance structural color materials by virtue of its natural nanoscale, excellent self-assembly properties and green sustainable attributes, bringing revolutionary breakthroughs to the fields of anti-counterfeiting, optical films, flexible displays and other fields. As a natural polymer material derived from biomass such as wood, cotton, and straw, nanocellulose not only inherits the environmental protection genes of biomass, but also solves the industry pain points of traditional chemical dyes that are easy to fade, highly polluted, and difficult to control with its unique microstructure. 1. Nanocellulose: Natural green nanomaterial Nanocellulose is a nanoscale cellulose material prepared from natural biomass through physical, chemical or biological methods. It is mainly divided into two categories: cellulose nanocrystals (CNC) and cellulose nanofibers (CNF). Its core characteristics lay the foundation for structural color construction: Nanoscale and high aspect ratio: CNC diameter is about 5-50