Abstract: Traditional surfactant emulsification systems often have shortcomings in the application of emulsion products such as daily chemicals and foods, such as high irritation, insufficient stability against temperature and salt resistance, and limited formula compounding. Nanocellulose, as a type of one-dimensional nanobio-based particle emulsifier of natural origin, can be enriched at the oil-water two-phase interface as Pickering emulsification particles. It forms a continuous rigid fiber membrane through irreversible interface adsorption and tight arrangement. It relies on the steric hindrance effect to block the collision and aggregation of oil droplets, and can construct an oil-in-water emulsion with excellent storage stability at a low addition amount. This article elaborates on the interface mechanism, laboratory visualization verification, performance advantages, application scenarios and formula adaptation points, providing a material solution reference for the green and minimalist formula development of emulsion systems. 1. Introduction Emulsion is a dispersion system formed by mutually immiscible oil and water phases under the action of emulsifying substances. It is widely used in cosmetics, personal care, food, coatings and other fields.

This article is suitable for the technical column of the company's official website. It is professional and rigorous, oriented to customers of paper mills, packaging companies, and R&D institutions. It focuses on a single track of papermaking, taking into account the mechanism, process path, performance indicators, industry pain points, industrialization solutions and technical advantages, and can be published directly. Abstract Under the background of dual carbon, the papermaking industry is facing common bottlenecks such as raw material degradation, strength attenuation of recycled fibers, difficulty in recycling traditional petroleum-based barrier coatings, and strength loss caused by high filler addition. Nanocellulose (NC, including cellulose nanofibrils CNF and cellulose nanocrystalline CNC) has become a new generation of papermaking functional additives and coating substrates due to its ultra-high aspect ratio, huge specific surface area, abundant surface hydroxyl groups, complete biodegradability, and homologous compatibility with pulp fibers. Starting from the interface bonding mechanism of nanocellulose in the papermaking system, this article systematically elaborates on the three mainstream industrial application paths of in-pulp reinforcement, retention and filtration assistance, and surface functional coating, and quantitatively analyzes their effects.

Under the industrial trends of water-based, low-carbon and high-performance, the coatings and polymer composite materials industries are continuing to look for new functional additives that combine reinforcement, rheology control, and green traceability. Nanocellulose (CNF/CNC) relies on its natural biomass source, high aspect ratio, abundant surface hydroxyl groups, and customizable modification characteristics to become a valuable green functional component in coating systems, resins, and elastomer composites. A small amount of addition can simultaneously optimize key indicators such as processing rheology, mechanical strength, and weather resistance. It can replace some traditional synthetic rheology agents and inorganic powder reinforcing fillers to help reduce carbon emissions and upgrade formulas. Value and application in coating systems Nanocellulose plays four major roles in water-based coatings: rheology regulation, anti-sedimentation, film-forming reinforcement, and weather resistance improvement. It is suitable for water-based acrylic, water-based polyurethane, industrial anticorrosive paint, wood paint, architectural coatings, inorganic mineral coatings, functional protective coatings and other systems. Resting state