Introduction With the rapid development of renewable resources and green and environmentally friendly materials, nanocellulose (Nanocellulose) has gradually become a hot topic in scientific research and industrial fields due to its advantages such as lightweight, high strength, renewable and degradable. Among them, TEMPO oxidation modification, as an efficient and controllable surface functionalization method, gives nanocellulose more performance and application potential. This article will introduce the principles, characteristics and typical applications of TEMPO oxidized nanocellulose from a popular science perspective. What is TEMPO oxidation? TEMPO (2,2,6,6-tetramethylpiperidin-1-oxygen radical) is an organic radical catalyst. Under basic conditions, TEMPO works together with sodium hypochlorite (NaClO) and sodium bromide (NaBr) to selectively oxidize the primary hydroxyl group at the C6 position of cellulose molecule to carboxyl (–COOH). This reaction has the following advantages: strong selectivity: mainly

Abstract Carboxylated modified Nanocellulose (CNCF) is a functional nanomaterial that introduces carboxylated (–COOH) groups on the cellulose surface by chemical modification. This material has the high strength, high specific surface area and good dispersion of nanocellulose, and imparts better hydrophilicity, reactive activity and interface binding ability under the action of surface carboxyl groups. This article will introduce the preparation methods, key properties, typical application fields and future development trends of carboxylated modified nanocellulose, and provide reference for scientific researchers and related companies. Introduction to carboxylated modified nanocellulose Nanocellulose is a renewable green material derived from natural cellulose, with advantages such as high crystallinity, lightweight, and high strength, and degradability. However, the original nanocellulose has problems such as single surface functional groups, insufficient dispersion, and limited compatibility with other materials. Modification by carboxylation

1. Introduction Nanocellulose (NC) is a green nanomaterial derived from natural cellulose, with high specific surface area, high crystallinity, excellent mechanical properties and renewability. However, natural nanocellulose surfaces are rich in hydroxyl groups and exhibit strong hydrophilicity, which limits its application in non-polar polymers, oily systems and hydrophobic substrates. To this end, scientific researchers and enterprises have transformed their surface into hydrophobic nanocellulose through chemical modification or physical treatment, greatly expanding their application space. Keywords: nanocellulose, hydrophobic modification, esterification, silanization, oil-water separation, composite materials 2. Preparation process of hydrophobic nanocellulose, typical reactants/means, advantages and disadvantages of esterification reaction, fatty acid anhydride, stearic anhydride, isocyanate process mature, significant part of the hydrophobic reaction requires organic solvent silanization to modify triethoxyoctylsilane and methyl trichlorosilane hydrophobic long-lasting, suitable for

Driven by the wave of green technology and sustainable development, nanocellulose, as a nano-scale material derived from natural cellulose, is becoming a 'star material' in the field of materials science with its high specific surface area, high strength and biodegradability. However, the strong hydrophilicity imparted by its rich hydroxyl groups on the surface has become a key bottleneck limiting its application in non-polar media. The hydrophobic modification technology imparts nanocellulose waterproof, oil-proof and compatible characteristics with hydrophobic substrates, which is becoming the core path to unlock its high-value applications. 1. Technical breakthrough: Three major modification paths to build a hydrophobic barrier (I) Physical adsorption: Green and efficient surface modification physical adsorption method loads hydrophobic substances such as surfactants, quaternary ammonium salts or copolymers on the surface of nanocellulose through weak interactions such as van der Waals forces and hydrogen bonds. Team from Tianjin University of Science and Technology uses cationic surfactant cetyltrimethylammonium bromide (CTAB) to modify cellulose nanocrystals

Application cases of nanocellulose hydrophobic modification: Green solution for upgrading performance of water-based coatings. With the widespread application of water-based coatings in the fields of construction, wood, industrial and functional membranes, water resistance, coating film stability and storage stability have become important factors that restrict performance. The hydrophobic modified nanocellulose developed by Nanjing Tianlu Nano Technology Co., Ltd. has achieved a significant improvement in the performance of water-based coatings through surface chemical modification. The following are specific application cases and comparison analysis. Case 1: Experimental design for improving performance of water-based wood paint: Add 1% hydrophobic modified nanocellulose dispersion to the water-based wood paint, and compare the reference paint without nanocellulose added. Indicators: Non-added nanocellulose added hydrophobic modified nanocellulose enhances the effect of coating hardness HB2H+2 grade water resistance (24 hours of water immersion) paint film expands, slightly bubbled paint film complete, no expansion significantly improves sagging, medium-sized excellent construction, smooth construction significantly improves storage stability for 3 months, easy settlement and stratification 1

With the continuous advancement of green and low-carbon concepts and environmental protection regulations, water-based coatings are becoming more and more widely used in the fields of building decoration, wood furniture, automobile manufacturing, etc. However, water-based coatings also face some pain points, such as poor sagging, insufficient wear resistance, low coating strength, fast settlement and delamination. The highly dispersible nanocellulose dispersion developed and produced by Nanjing Tianlu Nano Technology Co., Ltd. provides a new solution to these problems - adding a small amount of nanocellulose to aqueous coatings can significantly improve rheological performance, improve coating film strength, and extend product storage life. The mechanism of action of nanocellulose in aqueous coatings Nanocellulose is a green nanomaterial derived from plant fibers. The fiber diameter is only 5-50 nanometers, the length can reach several microns, and has an extremely high aspect ratio and specific surface area. In aqueous coating systems, it can form a three-dimensional network structure, giving the coating excellent thickening, suspension and enhancement effects. The main mechanisms of action include: flow

Nanjing Tianlu Nano Technology Co., Ltd. is a high-tech enterprise specializing in the research, development, production and sales of nanocellulose dispersions. The company is located in Jiangning District, Nanjing City, equipped with advanced nano-processing equipment and a complete quality testing system. We have long provided high-dispersion and strong suspension stability nanocellulose aqueous dispersion products for food packaging, coatings, medical materials, new energy and other fields, and are committed to promoting the industrial application of green and environmentally friendly materials. With the continuous advancement of the concept of green and low carbon, nanocellulose dispersion (Nanocellulose Dispersion) is attracting high attention from various industries as a new generation of biodegradable materials. It uses natural cellulose as raw material and nano-treated aqueous suspension, which has high dispersion, suspension stability, mechanical enhancement and environmentally friendly and degradable. It is widely used in food packaging, coating additives, biomedical materials, cosmetics and new energy materials.

1. Introduction Suspending Agent plays a key role in coatings, food, medicine, pesticides and daily chemical products. It is used to stabilize the uniform dispersion of solid particles in liquids and prevent settlement or aggregation. Traditional suspension agents are mostly synthetic polymers or inorganic clay substances, but they have problems such as poor biodegradability, heavy environmental burden or low system transparency. Nanocellulose, as a natural and renewable functional material, has gradually become a hot topic for research of the new generation of green suspension agents due to its high specific surface area, excellent rheology regulation ability and suspension stability. 2. The mechanism of nanocellulose suspension function network structure support effect Nanocellulose has a high aspect ratio (diameter 5–50 nm, length up to several microns), which can form a three-dimensional physical network in the aqueous phase, increase the system viscosity and yield stress, and effectively inhibit particle settlement. Static electrostatic and steric hindrance stable

Research and development of nanocellulose in the field of functional coatings 1. Introduction Functional coating is a type of surface covering material that combines decoration and specific functions (such as waterproof, anti-fog, ultraviolet rays, barrier, conductivity, etc.), and is widely used in packaging, electronics, medical, textile and construction industries. With the increasing demand for green and environmentally friendly and high-performance materials, natural, renewable and functional nanocellulose (Nanocellulose) sources have gradually become an important substrate or additive for functional coatings. Nanocellulose provides excellent adhesion, film formation and functionalization potential for coatings with high mechanical strength, high transparency, controllable surface chemical structure and biocompatibility. 2. The mechanism of action of nanocellulose in the coating The framework enhances the high aspect ratio and high crystallinity to form a dense mesh structure, improving the wear resistance and stability of the coating. The barrier performance improves tightly arranged nanonetworks significantly extend the permeability path of gas or water vapor,

Analysis of nanostructure performance of bacterial cellulose: Functional pioneers in natural materials - Nanjing Tianlu Nano Technology Co., Ltd. Technical Column 1. Preface: The intersection of nanomaterials and green technology. In the context of the rapid fusion of green materials and nanotechnology, bacterial cellulose (BC), as a nano-level high-performance material naturally synthesized by microorganisms, has gradually become the focus of attention of various high-value-added industries. It not only has the environmental advantages of natural polymer materials, but also plays a key role in biomedicine, intelligent manufacturing, food packaging and other fields due to its unique nanofiber network structure. 2. Source and microstructure of bacterial cellulose. Bacterial cellulose is synthesized by microorganisms such as acetate through metabolic processes under aerobic conditions, forming a three-dimensional network structure composed of fiber filaments with a diameter of 20 to 100 nanometers. This structure shows: high crystallinity (70~9