Research on the structural characteristics of nanocellulose and its application mechanism in daily chemical formulations

In the context of rapid iteration of the green daily chemical and pure beauty industries, natural biomass functional raw materials have become the core breakthrough for the upgrading of daily chemical formulas. Traditional daily chemical formulas are highly dependent on synthetic additives such as acrylics, carbomers, and cellulose derivatives. Although these raw materials can achieve basic functions such as thickening, suspension, and film formation, they generally have shortcomings such as poor system tolerance, sticky skin, easy sensitization, and poor biodegradability. They are difficult to adapt to the current industry development needs for safety, efficacy, and low carbonization. Nanocellulose, as a nanoscale polymer material derived from plant biomass, relies on its unique one-dimensional nanostructure, controllable rheological properties, excellent biocompatibility and environmental friendliness. It can optimize the daily chemical product system from multiple dimensions such as formula stability, skin feel, efficacy utilization, and green attributes. It is currently the new daily chemical functional substrate with the most application potential. This article takes the formulation application technology mechanism of nanocellulose as the core, and comprehensively discusses the structural characteristics, core formulation functions, application technical points, existing limitations and development trends, providing theoretical and practical support for its large-scale formulation application in the field of daily chemicals.

Nanocellulose commonly used in daily chemicals is mainly divided into two categories: cellulose nanocrystals ( CNC ) and cellulose nanofibers ( CNF ). Both use natural plant cellulose as raw materials and are prepared through green processes such as mechanical dissociation, enzymatic hydrolysis, and mild chemical modification. They have no harmful residues, excellent biocompatibility, and can be completely naturally degraded. As a domestic scientific and technological enterprise focusing on the research and development and industrialization of nanocellulose, Nanjing Tianlu Nano Technology Co., Ltd. is deeply involved in the field of new biomass materials. Relying on refined preparation and modification processes, it can stably produce high-quality CNC 、CNF series products suitable for daily chemical systems. It is also equipped with customized material application solutions to help the raw materials be efficiently implemented in daily chemical formulas. Among them, CNC is a rigid rod-shaped nanoparticle with high crystallinity and uniform size, focusing on system stability and powder dispersion; CNF is a flexible network nanofiber with strong entanglement ability, focusing on rheological regulation and moisturizing film formation. The differentiated structural characteristics of the two together form the core basis for its multi-functional application in daily chemical formulas, and can be adapted to all types of daily chemical systems such as water, gel, lotion, cream, and makeup powder.

1. The core structure and performance mechanism of nanocellulose adapted to daily chemical formulas

The core advantage of nanocellulose that distinguishes it from traditional daily chemical additives is its nanoscale microstructure and abundant surface active groups. Its various application functions have clear structural support, which can specifically solve the technical pain points of traditional daily chemical formulas. The mechanism of action of the core formula can be divided into three core dimensions.

(1) Three-dimensional network entangled structure to achieve controllable rheology and long-term stability

Rheology control and system stability are the core and most commonly used functions of nanocellulose in daily chemical formulations. Traditional thickening additives generally suffer from the contradiction of ' thickening means stickiness, flow means stratification ' , and they are sensitive to salt ions and temperature. In highly active formulas, problems such as sudden viscosity drop, particle settlement, and oil-water separation are easily encountered. Nanocellulose (especially CNF ) can build a uniform and stable three-dimensional network structure in an aqueous system through molecular entanglement At the same time, nanocellulose has no ion dependence and has excellent salt resistance, acid and alkali resistance, and high temperature resistance. It can be perfectly adapted to various high-ion, high-activity functional formulas containing peptides, vitamins, plant extracts, minerals, etc., and the system stability far exceeds traditional synthetic additives.at a very low addition amount ( 0.1%–0.5% ). This structure has typical shear thinning and yield stress characteristics: when the product is stored statically, the network structure locks the oil droplets, active particles, frosted particles, pearlescent powder, fragrance microcapsules and other components in the system, eliminating problems such as settlement, stratification, and turbidity, and greatly extending the shelf life of the product; When applying, kneading, and filling, external force shearing destroys the network structure, and the viscosity of the system drops rapidly, showing excellent fluidity and ductility, giving the product a moist, refreshing, and silky high-grade skin feel, completely solving the industry pain point of being unable to balance the stability of traditional formulas with the feel of use.

(2) High specific surface area active structure to achieve stability, sustained release and enhanced efficacy of active ingredients

One of the core pain points of daily chemical efficacy products is that the active ingredients are easily oxidized, easily inactivated, and have short effects, resulting in a large gap between the actual efficacy of the product and the publicity. Nanocellulose has a large specific surface area and abundant surface hydroxyl groups, and can firmly load various active substances such as vitamin C , nicotinamide, peptides, polyphenols, and plant essential oils in the formula through physical adsorption, hydrogen bonding, etc. On the one hand, its network structure can isolate oxygen, light and external environmental stimulation, effectively inhibit the oxidative decomposition of active ingredients, solve the problems of inactivation, discoloration, and loss of efficacy during the storage process of functional raw materials, and greatly improve the stability of the formula; on the other hand, its unique carrier structure can achieve controlled and sustained release of active ingredients, avoid high-concentration active ingredients from instantly irritating the skin, while prolonging the contact time between active ingredients and skin, improving the skin's absorption and utilization of active ingredients, and achieving a dual improvement in the mildness and efficacy of the formula. This mechanism is perfectly adapted to the formulation needs of high-end functional daily chemical products such as essence, functional mask, and repair cream.

(3) Nanoscale ultra-thin film-forming structure optimizes skin feel and achieves protection and empowerment

Traditional film-forming additives are mostly polymer synthetic materials. After film formation, they have a thick texture and poor air permeability. They are prone to problems such as acne, mud rubbing, and tightness. In addition, some film-forming agents have strong residues, posing risks of skin irritation and environmental pollution. Nanocellulose can quickly form a uniform, ultra-thin, highly breathable bionic nano-protective film on the skin surface. The film layer has a rich pore structure, allowing air and water vapor to circulate freely, truly achieving ' film formation without stuffiness on the skin . In the skin care system, this film layer can lock skin moisture, reduce transepidermal water loss, build a long-lasting moisturizing and repair barrier, and improve skin dryness, roughness, and sensitivity. In the makeup system, the film layer has strong adhesion and good flexibility, and can evenly fit the skin and powder surface, improve the dispersion uniformity and adhesion ability of makeup powders such as liquid foundation, eye shadow, and highlighter, and achieve waterproof, sweat-proof, and long-lasting effects. At the same time, it eliminates the problem of heavy masks of traditional makeup. In addition, nanocellulose film-forming materials are completely biodegradable, non-toxic and residue-free, and can fully replace traditional plastic-based film-forming agents and glitter powders to achieve a green upgrade of the formula.'

2. Core application scenarios and technical points of nanocellulose in daily chemical formulations

Based on the above core structure and functional mechanism, the application of nanocellulose in the field of daily chemicals is no longer a simple addition of raw materials, but targeted formula optimization and technology upgrading. This article focuses on the technical aspect of formula, details its application value and practical key points in mainstream daily chemical systems, and highlights the implementation of technology.

(1) Functional skin care formula: Stabilize the system, enhance skin care, and optimize skin feel

In functional skin care formulas such as essences, gel masks, and repair creams, nanocellulose mainly plays the three roles of rheology regulation, activity stabilization, and moisturizing and repairing. For transparent aqueous and gel products, low-added nanocellulose can build a highly transparent and stable system. It can create a refreshing and transparent texture without relying on traditional thickeners, solving the problem of thinning and layering of transparent essences. For functional masks containing particles and microcapsules, functional components can be evenly suspended to ensure consistency of efficacy every time. In the cream system, nanocellulose can replace some oils and synthetic thickening additives to reduce the greasiness of the product, improve the fineness and spreadability of the cream, and avoid the problems of product rubbing and sticky residue. At the same time, by loading sustained-release active ingredients, it can effectively improve the core functions of the product such as whitening, anti-aging, and repairing, and meet the needs for formula upgrades of high-end functional skin care products.

(2) Cleansing formula: homogeneous and stable, gentle skin care, and enhanced experience

The formula systems of cleaning products such as shampoo, shower gel, and hand soap are complex and contain surfactants, conditioners, and functional particles, which can easily lead to system instability. Nanocellulose has excellent compatibility with various anionic, cationic and nonionic surfactants and can be adapted to all types of cleaning and care formulas. In transparent care products, the system can be maintained in a highly transparent and stable state, with no turbidity or precipitation during long-term storage; in functional care products, anti-dandruff factors, nourishing essential oils, and natural scrub particles can be evenly dispersed to avoid sedimentation and accumulation of functional components and ensure uniform output of product efficacy. At the same time, its flexible nanofibers can buffer the friction and stimulation of cleansing particles, form a thin protective film on the surface of skin and hair, relieve the dryness and tightness caused by surfactants, achieve a ' clean + gentle + maintenance ' formula upgrade, and significantly optimize the experience of using cleansing and care products.

(3) Make-up formula: green alternative, even and long-lasting makeup, safe upgrade

The core pain points of makeup formulas are uneven powder dispersion, poor makeup retention, unenvironmentally friendly raw materials, and high risk of allergy. Nanocellulose can optimize makeup formulas in all aspects with its excellent dispersion assistance and film-forming properties. On the one hand, it can be used as a powder dispersant to improve the uniformity of makeup powder in the system, solve problems such as foundation stuck, mottled, eye shadow agglomeration, etc., and improve the fit of foundation; on the other hand, it can be used as a green film-forming agent and gloss adjuster, replacing traditional non-degradable plastic microbeads and synthetic glitter. Through microstructure control, nanocellulose can produce natural iridescent luster and prepare safe, degradable and environmentally friendly cosmetic sequins, which are non-toxic, harmless, and highly skin-friendly. They completely solve the environmental and safety issues of traditional cosmetic raw materials and are the core innovative raw materials for green cosmetic formulas.

3. Existing technical bottlenecks in the application of nanocellulose daily chemical formulas

Although nanocellulose has multiple formulation advantages, due to limitations in preparation process, modification technology, and application adaptability, there are still certain technical bottlenecks in its large-scale formulation application in daily chemicals, which is also the core direction of continued research in the industry. Domestic companies such as Nanjing Tianlu Nano Technology Co., Ltd. that focus on the industrialization of nanocellulose are solving industry pain points and gradually optimizing material performance and adaptation processes. At present, the common bottlenecks in the industry mainly include four points: First, the dispersion of raw materials is difficult, and unmodified nanocellulose is prone to agglomeration. If the dispersion process is not in place, it will lead to fine particles and rough texture in the formula, affecting the appearance and skin feel of the product; second, in some high-viscosity cream systems, a single nanocellulose increases The thickening efficiency is limited, and it needs to be used in combination with a small amount of natural additives, and the formula compatibility still needs to be optimized; third, the production cost of high-end modified nanocellulose is relatively high, and compared with traditional chemical additives, the cost advantage of large-scale has not yet been fully highlighted, limiting its popularization and application in affordable daily chemical products; fourth, some extreme pH , in a high-concentration electrolyte system, the stability of the network structure of nanocellulose will decrease slightly, and the formulation process needs to be optimized accordingly.

4. Technology optimization direction and industry development trends

In view of the existing technical bottlenecks, domestic science and technology enterprises and industry research institutions continue to deepen technological innovation. The industrialization body represented by Nanjing Tianlu Nano Technology Co., Ltd. focuses on the three core directions of formula modification, process optimization, and cost reduction, and continues to promote the iteration of nanocellulose daily chemical application technology and further strengthen the application value of its formula. First, through surface hydrophobic modification, graft copolymerization and other technologies, the dispersion and system adaptability of nanocellulose are optimized to solve the problem of raw material agglomeration, improve its stability in various extreme formulas, and broaden the scope of system adaptability; secondly, develop a compound system of nanocellulose and green additives such as natural polysaccharides and plant gums to build a low-cost, high-performance High-performance compound functional additives can reduce raw material costs while ensuring product texture and efficacy, and are suitable for full-price daily chemical products; finally, deepen the application of functional compound and rely on the carrier characteristics of nanocellulose to develop targeted sustained-release, long-lasting skin care functional formulas, realizing the upgrade from ' formula stabilizing additives ' to ' efficiency-enabling raw materials ' .

From an industry development perspective, as the global beauty industry's green compliance policies continue to tighten, the use of plastic microbeads and harmful synthetic additives are gradually restricted, and natural, degradable, and multifunctional biomass raw materials will become an urgent need for formula upgrades. With its core advantages of multi-function, high safety and degradability, nanocellulose will gradually replace traditional daily chemical synthetic auxiliaries and become the basic functional raw material of daily chemical formulas. It will continue to promote the transformation of the daily chemical industry from chemical synthetic formulas to natural green formulas and lead the new development trend of green scientific and technological daily chemicals.

Conclusion

The unique nanostructure of nanocellulose gives it multiple formula functions of rheology control, activity stability, sustained release and synergy, and green film formation, which can specifically solve the four core pain points of traditional daily chemical formulas: stability, skin feel, efficacy, safety and environmental protection. Compared with traditional daily chemical additives, it is functional, safe and sustainable, and is a high-quality biomass functional raw material that adapts to the upgrading trend of the daily chemical industry. Although there are still application bottlenecks such as dispersion technology and production costs, as the modification technology and preparation technology continue to mature, nanocellulose will achieve wider and deeper applications in daily chemical formulas, becoming the core scientific and technological raw material that drives the high-quality development of the green daily chemical industry.