Lignosulfonic Acid

The main uses of lignin sulfonic acid are numerous. First of all, in the manufacturing process, lignin sulfonic acid and its properties can be used as dispersing agent. It can make the product uniform and dispersed, so that the resulting product is more uniform, and the quality is also increased. Furthermore, in the construction field, lignin sulfonic acid is often used as concrete water. Adding this can effectively reduce the water consumption required for concrete mixing, maintain the same fluidity of concrete, and improve its quality. And it can reduce the amount of cement, save costs, and improve the durability of concrete, which is valuable in large-scale construction projects. In terms of production, lignin sulfonic acid is also effective. It can be used to increase the efficiency of fertilizers. It can adsorb elements such as nitrogen, phosphorus, and nitrogen in fertilizers, release them slowly, improve the utilization rate of fertilizers, help crops better absorb nutrients, increase crop growth, and increase the amount of fertilizer. In addition to oil exploration, lignin sulfonic acid can be used as a dilution of well mud. In the well, it can improve the flow performance of the mud, prevent the mud from being sticky and affecting the efficiency, ensure the profitability of the well, reduce the grinding efficiency, and prolong the use of the equipment. Furthermore, in the work of dyes and materials, lignin sulfonic acid acts as a dispersion aid. It can make the dyes and materials particles disperse in the solution, prevent their agglomeration, make the coloring more uniform, make the color more harmonious, and improve the quality of the product. In the process of leather tanning, lignin sulfonic acid can be used to help tanning. It can accelerate the tanning process and penetrate into the leather, distribute evenly, improve the tanning effect, and make the leather soft, soft and rich.

The differences in the application of wood cellulose in different industries are related to the operation of all walks of life. In the paper industry, it is the foundation. "Tiangong Kaiwu" says: "Where paper is not strong at all, it will break, so it must take the toughness of wood cellulose." In it, wood cellulose is turned into pulp and finally into paper. The length and toughness of its fibers determine the quality of paper. Good wood cellulose makes paper tough and smooth, such as rice paper, which is not rotten for thousands of years, because of the excellence of wood cellulose. In the textile industry, wood cellulose takes a different path. After chemical treatment, it can be made into viscose fibers and so on. This fiber has the comfort of natural fibers and the characteristics of synthetic fibers. Although this change is not detailed in the book, it is reasonable to infer that wood cellulose is used in textiles. After chemical ingenuity, it gives the fabric moisture absorption and softness. Such as summer clothing, use this fiber to make people refreshing. In the construction industry, wood cellulose is also widely used. Adding building materials, such as putty, thermal insulation materials, etc. It can increase material cohesion and water retention. Although "Construction French" has not been used in this modern application, it is analogous to the ancient principle of adhesives. Wood cellulose is used in building materials to stabilize the structure and prevent drying and cracking. In the food industry, wood cellulose has turned into dietary fiber. Although no ancient books such as "Tiangong Kaiwu" are involved in this use today, modern cognition shows that it is beneficial to human digestion. Added to food, increase the fiber content of food, and help human health. In summary, wood cellulose plays a unique role in different industries, depending on the needs of the industry, either by taking its fiber characteristics or by chemical transformation, and each can be used in different fields.

Lignin sulfonic acid is a product obtained by the sulfonation of lignin. Its chemical properties are unique and have the following characteristics: First, it has surface activity. The molecular structure of lignin sulfonic acid contains hydrophilic groups such as sulfonic acid groups, and hydrophobic parts such as phenylpropane structures. Such a special structure makes it resemble both amphiphilic properties and can reduce the surface tension of liquids. In many industrial scenarios, such as pulp and paper production and oil extraction, it is often used as a surfactant. In the pulp and paper process, it can help the fibers to disperse and make the paper more uniform. When oil is extracted, it can improve the properties of the oil-water interface and improve the oil recovery rate. Second, it has a certain chelating ability. Sulfonic acid groups can be complexed with metal ions to form stable complexes. This property is very useful in removing or stabilizing metal ions in systems. For example, in water treatment, it can combine with metal ions such as calcium and magnesium in water to prevent scale formation; in some chemical production processes, it can stabilize metal catalysts and improve catalytic efficiency. Third, it has acid-base response. Due to the presence of sulfonic acid groups, the degree of ionization varies under different acid and base conditions. In acidic environments, the sulfonic acid group is partially protonated, while in alkaline environments, the sulfonic acid group is ionic. This property makes lignin sulfonic acid suitable for systems that need to be regulated according to acid and base conditions, such as smart drug carriers, or some chemical reaction systems that are sensitive to environmental pH. Fourth, it has certain antioxidant properties. The structure of lignin itself contains phenolic hydroxyl groups and other functional groups with antioxidant effects, and lignin sulfonic acid also inherits some of these properties. In some easily oxidized systems, it can play an antioxidant effect and protect other ingredients in the system from oxidative damage. For example, in some food and cosmetic additive formulations, it may prolong the shelf life of products. Fifth, it has strong chemical modifiability. The sulfonic acid groups on the lignin sulfonic acid molecule and other active check points provide convenience for chemical modification. Through chemical reactions, other functional groups can be introduced, thereby expanding its application scope. For example, through graft copolymerization, a specific polymer chain is connected to impart new properties, which can be used in the synthesis of new materials and other fields.

The production process of lignin sulfonic acid is an excellent and delicate process. It has existed in ancient times, and it is not refined today. In the past, it began with the material of manufacturing. In the process of manufacturing, wood chips are immersed in a specific liquid to make lignin come out of lignin. This liquid often contains sulfonic acid, which can combine with lignin and make it dissolve in the liquid. And, the method of sinking and cleaning, to remove its quality, to obtain the crude product of lignin sulfonic acid. Today's work is more refined and efficient. The first raw material is the best wood, and the characteristics of its lignin content are all exquisite. The dipping process is to control the composition of the liquid, the degree of resistance, and the factors of quality and quality. Such as the height of the degree, the rate of reflection; the short of the degree, the degree of fixation of wood elements. And the new technology borrows the power of new technology to improve the quality of the product. In addition, there are also many steps in the method of separation and improvement. New technologies such as color separation and membrane separation are used here to greatly improve the quality of lignin sulfonic acid. There is also a new way to react to catalysis. The use of high-efficiency catalysis can reduce the harshness of the reaction parts, reduce the energy consumption, and also speed up the formation of lignin sulfonic acid. In short, the production and engineering of lignin sulfonic acid, the month of the month, integrates the ancient and the present, with technology and wings, the day is excellent, to meet the needs of each.

Compared with lignin and its congeneric products, lignin sulfonic acid has many advantages. Lignin sulfonic acid is derived from lignin, which is a by-product of the wood pulp and paper industry and is chemically modified. Its primary advantage is that it is naturally degradable. Lignin sulfonic acid is derived from natural lignin and has degradable properties in the natural environment. Unlike many synthetic products, it will cause long-term pollution to the environment. This property makes it useful in agriculture, environmental protection and other fields. If used as a slow-release agent for fertilizers in agriculture, it can naturally degrade after achieving the purpose of slow release of fertilizers, leaving no harmful substances in the soil, which is conducive to the long-term health of soil ecology. Furthermore, lignin sulfonic acid has good surface activity. Its molecular structure is special, and it has both hydrophilic and lipophilic groups, so it can significantly reduce the surface tension of liquids. In industrial applications, this property makes it a high-quality dispersant and emulsifier. Taking the coating industry as an example, lignin sulfonic acid can uniformly disperse pigments in the coating system, prevent pigment agglomeration and settlement, and improve coating quality and stability. In addition, lignin sulfonic acid is relatively inexpensive. As a by-product of pulping and papermaking, raw materials are widely sourced and inexpensive, and can be obtained by simple chemical treatment. Compared with some congeneric products that require complex synthesis processes and expensive raw materials, lignin sulfonic acid can effectively reduce production costs and improve economic benefits in large-scale industrial production. Finally, lignin sulfonic acid has good chemical stability. Under a wide pH range and temperature conditions, its chemical properties are relatively stable, and it is not easy to decompose and deteriorate. This makes it suitable for a variety of different environments and processes, such as being used as a drilling fluid additive in high-temperature petroleum production, which can maintain the stability of drilling fluid performance and ensure the smooth progress of mining. It can be seen from the above that lignin sulfonic acid occupies a unique position in many industries due to its advantages of natural degradability, good surface activity, low cost and good chemical stability. It is indeed a valuable chemical product.