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Views: 0 Author: Site Editor Publish Time: 2025-09-23 Origin: Site
In nature, the blue-green luster of peacock feathers and the colorful color of butterfly wings are not determined by pigment molecules, but are derived from the structural color generated by the interaction between micro-nano structures and light . This color has the characteristics of no fading, high stability, environmental protection , etc., and is an important inspiration for human materials science by nature. With the rise of sustainable development and the concept of green chemical engineering, how to controllably build a stable structural color system through artificial means has become a cutting-edge research direction in the field of materials science.
2. The unique advantages of nanocellulose
Nanocellulose ( NC ) is a nanomaterial derived from natural cellulose. With its high crystallinity, renewability, biodegradability and highly adjustable interface chemistry , nanocellulose has irreplaceable advantages in building structural color materials:
The self-assembly characteristics of liquid crystal phase
nanocellulose suspension can spontaneously form chiral nematic liquid crystal phase ( chiral nematic LC ), with the pitch of the same order as the visible light wavelength, so it can form a distinct structural color through This characteristic makes nanocellulose a natural photonic crystal precursor.Bragg reflection.
Multi-dimensional adjustability
By adjusting the concentration, ionic strength, solvent environment and surface modification of cellulose nanocrystals ( CNCs ), precise control of the thread pitch can be achieved, thereby achieving continuous adjustment of color. This structural - performance coupling provides the possibility for responsive smart materials .
Green and sustainability
are different from traditional dyes and pigments. The process of color imparting nanocellulose does not rely on chemical molecules to absorb, but is based on physical structure, avoiding environmental pollution and color fading problems, and conforming to the development trend of green and low-carbon.
High-security anti-counterfeiting system
The anti-counterfeiting label based on nanocellulose structural color has micro-nano structure characteristics that are difficult to imitate, which is far safer than traditional fluorescent and holographic materials. In the future, it will have disruptive potential in the fields of medicines, luxury goods and notes.
The intelligent responsive sensor
nanocellulose liquid crystal film is sensitive to external stimuli such as humidity, temperature, pH , etc., and can be manifested as structural color changes. This characteristic has opened up new ideas for wearable sensors and flexible electronics .
Sustainable packaging and decorative
structural color films can replace dye coatings and are used in packaging materials such as food and cosmetics, taking into account both aesthetics and environmental protection. Its high stability and renewability make it a key node in the circular economy system。
Chiral photonic crystals constructed by photons and optical elements
through nanocellulose are expected to be used in optical filters, polarizers and new optoelectronic devices, expanding the functional boundaries of structural colors.
Nanjing Tianlu Nano Technology Co., Ltd. of nanocellulose . has long-term research and accumulation in The company has formed a unique idea in the following aspects:the preparation, modification and application expansion
Scale and consistency : By optimizing mechanical grinding, TEMPO oxidation and other processes, the scale level and batch stability of nanocellulose production are improved, providing reliable raw material guarantee for structural color applications.
Functional modification : Carry out innovative research on surface modification, such as introducing functional groups such as carboxyl and sulfonyl groups to expand their performance in moisture-sensitive sensing and photon regulation.
Cross-border application research : Nanjing Tianlu not only pays attention to the material itself, but also cooperates with downstream companies to promote the industrialization of nanocellulose in green packaging, anti-counterfeiting technology and functional coatings .
The company's core view is: the application of nanocellulose in structural colors is not just a color substitution, but a reconstruction of the photonic functional material system by green materials. It carries the transformation from ' aesthetic decoration ' to ' functional devices ' and is a material paradigm innovation in the true sense.
From the perspective of science and industrialization, the development of nanocellulose in the field of structural colors faces two key challenges and opportunities:
How to achieve low-cost and high-consistency large-scale preparation?
This will determine whether nanocellulose structural colors can move from laboratories to large-scale industrial applications.
How to achieve the fusion of structural colors and versatility?
For example, integrated optical regulation, environmental response, anti-counterfeiting identification and other functions will give the material higher added value.
The breakthrough in the future lies in: interdisciplinary fusion (material science, optics, environmental science) and cross-industry cooperation (packaging, electronics, anti-counterfeiting, safe printing). Only in this way can nanocellulose structural color truly realize industrial value.
Nanocellulose has opened up a new path for the research and application of structural colors. It is not only a scientific exploration inspired by nature, but also an inevitable trend in the development of green industries. Nanjing Tianlu Nano Technology Co., Ltd. will continue to deepen its efforts in this field, promote the development of nanocellulose from basic research to industrial application, and allow ' green optical materials ' to truly serve the society and the environment.
