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Views: 0 Author: Site Editor Publish Time: 2025-07-17 Origin: Site
Nanocellulose is a new functional material made from nano-treated natural cellulose . It has advantages such as high specific surface area, high strength, and biodegradability. In recent years, it has received widespread attention in the fields of composite materials, energy, medicine, electronics, etc. Among them, of nanocellulose the thermal stability is one of the key parameters that determine whether it can be used in high temperature or thermal processing environments.
The thermal stability of nanocellulose mainly depends on its source, surface chemical modification method and dispersion state. Generally speaking, natural cellulose begins to pyrolyze above 200°C , while nanocellulose after TEMPO oxidation, acid hydrolysis or enzymatic lysis may reduce or increase the pyrolyze temperature, depending on the introduction of surface functional groups and changes in crystal structure.
Studies have shown that the thermal decomposition temperature of unmodified nanocellulose in the air is usually between 250°C and 300°C . The thermal stability of nanocellulose that has been surface modified (such as esterification and silanization) can be improved to above 330°C . This performance improvement enables it to be applied to the enhanced modification of certain thermoplastic polymer composite materials, such as polylactic acid ( PLA ), polycarbonate ( PC ) and other material systems.
The thermal stability of nanocellulose obtained from raw materials (such as wood pulp, cotton pulp, bacterial cellulose) varies For example, bacterial nanocellulose has better thermal decomposition behavior due to the absence of lignin and hemicellulose residues.
from source to preparation process .
The hydroxyl groups of surface chemically modified
nanocellulose are easily involved in chemical reactions. Modification by esterification, etherification or graft polymerization can improve its compatibility with the matrix and improve thermal stability.
The higher the crystalline degree of crystal structure and size effect
nanocellulose, the stronger its thermal stability. This is because the high crystallization zone is more difficult to be disturbed by thermal motion. In addition, nanocellulose with smaller particle sizes have a large specific surface area and are more likely to have heat exchange with the outside world, which has a significant impact on its pyrolysis behavior.
Nanocellulose with high thermal stability
in engineering plastic reinforced materials can be blended with polyamide, polypropylene, polyvinyl alcohol and other materials to improve the mechanical properties and thermal deformation temperature of the composite material.
Thermal conductivity / insulating materials
In flexible electronic devices or new energy equipment, the thermal conductivity of nanocellulose can be adjusted by thermal fillers, and its thermal decomposition temperature is high, which helps to improve device safety.
Biodegradable materials in high temperature environments
can be used to manufacture biodegradable packaging materials and medical consumables that still have good stability in high temperature environments.
As a domestic high-tech enterprise specializing in the research and development and production of nanocellulose , Nanjing Tianlu Nano Technology Co., Ltd. is committed to promoting the development of green and sustainable materials. The company has an advanced nanocellulose preparation technology platform, including core processes such as TEMPO oxidation method, mechanical peeling method and enzymatic solution. The products are widely used in electronic materials, adhesives, composite plastics, medical and health materials and other fields.
In the field of thermal stability, Nanjing Tianlu has effectively improved the thermal decomposition temperature and thermal stability performance of nanocellulose through its independently developed surface modification technology, providing downstream customers with high-performance material solutions suitable for high-temperature processes, and has been highly recognized by many industry customers.
As a renewable, biodegradable and excellent nanomaterial, nanocellulose is gradually breaking through restrictions and expanding its application boundaries in high-temperature material systems. With the advancement of technology and the maturity of the industrial chain, it will play greater value in the fields of aerospace, new energy vehicles, intelligent manufacturing, etc. in the future.
Nanjing Tianlu Nano Technology Co., Ltd. will continue to deepen its efforts in the field of nanomaterials and provide continuous impetus and technical support for promoting the industrialization of green and sustainable materials.
