High Viscosity Polyanionic Cellulose PAC

High-purity polyaluminium chloride (PAC) is a key agent for water treatment, and its main application fields are many. Although there is no such chemical term in the era involved in "Tiangong Kaiwu", it is still relevant to this. One is the field of water supply treatment. The drinking water sources of cities and towns have many impurities, microorganisms, etc. High-purity PAC can exert the ability of flocculation. It makes the suspended particles in the water gather together to form larger alum flowers, which then precipitate to remove the color and turbidity of the water, so that the water quality is clear and meets the drinking standard. In ancient towns, although there is no such precise chemical agent, there are methods such as sand filtration and static precipitation to purify water, which are secretly connected with the principle of PAC flocculation and precipitation. The second is the field of sewage treatment. Industrial wastewater and domestic sewage have complex compositions and contain many pollutants. High-purity PAC can play the role of flocculation, adsorption, and bridging according to different sewage characteristics. For example, the color of printing and dyeing wastewater and the organic matter of papermaking wastewater can be used by PAC to coagulate and separate pollutants, reduce chemical oxygen demand (COD), biochemical oxygen demand (BOD) and other indicators in sewage, and meet sewage discharge standards, so that water can be reused or safely discharged into natural water bodies. Although the composition of ancient sewage was not as complex as it is today, it was also used through ditches, natural purification, etc. The purpose of treating sewage with PAC today is to keep water clean. Another is the field of industrial circulating water treatment. In industrial production, if the circulating water system is not properly handled, it is prone to scale and corrosion of equipment. High-purity PAC can maintain the stability of circulating water quality, inhibit the growth of microorganisms and scale formation, ensure the efficient operation of industrial equipment, and prolong the service life of equipment. Although the ancient industry was simple, when using water, it also paid attention to water quality maintenance to ensure smooth production. It is also common with today's use of PAC to maintain industrial circulating water systems.

High-purity polymeric anionic cellulose PAC has many advantages over other similar products. PAC shows unique advantages when applied in many fields. The first is thickening performance. In aqueous systems, PAC can swell rapidly and is highly dispersed, which can efficiently improve the viscosity of the system. Compared with congeneric products, its thickening rate is faster and the consistency is more considerable. In coatings, printing and dyeing industries, PAC can make materials have suitable rheological characteristics, help uniform coating and coloring, and ensure high quality products. The second is water retention performance. PAC has excellent water retention ability and can effectively lock moisture in various environments. In building materials such as putty powder and ceramic tile binder, PAC can significantly prolong the opening time of the material, prevent excessive drying, and improve construction performance and bonding strength compared with other products. The other is salt resistance. In the face of high salt environment, PAC has outstanding stability. In the preparation of drilling fluids for oil extraction, when encountering high salt content in the formation, PAC is better than other similar products to maintain the stability of system performance and ensure the smooth progress of drilling operations. The second time is compatibility. PAC has good compatibility with a variety of chemical substances and can cooperate with different additives to expand the scope of application. In the formulation design of daily chemical products such as shampoo and shower gel, it can coexist harmoniously with various surfactants and conditioners to help develop a variety of high-quality products. The last is environmental protection performance. PAC is mostly made of natural cellulose and is produced by green process, which has good biodegradability. Compared with some synthetic similar products, it is more in line with the current environmental protection concept. It has broad application prospects in food, medicine and other fields with strict requirements on safety and environmental protection.

High-purity polyaluminium chloride (PAC) is commonly used in water purification, and its optimum humidity is crucial. In the context of "Tiangong Kaiwu", although there is no accurate answer to this question, it can also be found by looking at the principles of water treatment materials used by the ancients. For PAC, in order to achieve the best effect, the humidity should be appropriate. If the humidity is too high, the agent is easy to agglomerate into pieces, and it is difficult to disperse evenly in water, so it cannot give full play to its ability to flocculate and precipitate. Just like the ancient ink making, the water is mostly thin and the ink is difficult to form on paper. If the humidity is insufficient, PAC is not easy to dissolve, and its active ingredients cannot be effectively released in water. Just like the fuel wood is too dry, it is difficult to ignite a raging fire. According to many practices and current research, the optimum humidity for PAC is about 50% - 70%. In this humidity range, PAC can dissolve smoothly, and its molecular structure can be fully extended, and it can efficiently combine with impurities in the water to achieve a good water purification effect. This humidity range is like a harmony of yin and yang, just right. Not only can PAC be quickly integrated into the water body, but also its activity can be fully exerted to remove turbidity and impurities in the water, so that the water can be clarified. It is similar to the ancient people who used sand, gravel, grass and other substances to make the turbid water clear, all of which seek a way of balance. Therefore, in order to achieve the best effect of PAC, it is appropriate to maintain a humidity of 50% - 70%.

For high-purity polymerized anionic cellulose PAC, the conditions for storage are very important. PAC is delicate in nature, and it can be stored in a dry and cool place to protect its quality. Dry place, no water and wetness. If water and moisture invade, PAC is easy to deliquescence, its intermolecular force is chaotic, and its properties change and become ineffective. And the wet place is polymycorrhizal, which may cause PAC to rot and damage its use. A cool place, avoid the harm of high temperature. When PAC is heated, its internal molecules increase rapidly, and the reaction is easy to cause, resulting in degradation. Under high temperature, PAC or depolymerization, its long chain breaks and viscosity decreases, which is unfavorable for all industries. The paper industry relies on it to increase viscosity. It needs to stabilize the color in printing and dyeing, and if it is damaged at high temperature, it will be difficult to achieve anything. And it must be protected from strong light. Light has energy, illuminates PAC, promotes its photochemical reaction, and changes its molecular structure. Although it is not obvious, it will be different for a long time, so it is hidden in the dark and should not be disturbed by light. Furthermore, it is separated from other things. PAC may react with heterogeneity and be mixed with acid and alkali, and its properties will change. Therefore, if you store it independently and keep its purity, you will get all the benefits. It is common in petroleum, food and other industries. It is available and effective for use.

The stability of high-purity polymeric anionic cellulose (PAC) is critical in different environments. Although "Tiangong Kaiwu" does not directly describe PAC, the reasons contained in it about the characteristics of the material changing in different situations may be learned. In a warm and humid environment, the stability of PAC is easily challenged. Moisture is often the cause of changes in many substances. When PAC encounters water, it may swell, causing its molecular structure to be loose. If the temperature and humidity continue, microorganisms are also easy to breed, eroding the structure of PAC and reducing its stability. As "Tiangong Kaiwu" said, various substances are more perishable in hot and humid conditions. Although PAC is not a traditional natural material, it is not a natural material. In a dry environment, the stability of PAC increases. Water is missing, swelling is difficult to form, and microorganisms are difficult to survive. However, if it is too dry, it is easy to be brittle, and the intermolecular forces may change, which affects its performance. This is similar to what is recorded in "Tiangong Kaiqi". If it is too dry, it will crack, and the same is true for PAC. As for the high temperature environment, the stability of PAC is even more concerned. High temperature can cause the thermal movement of molecules to intensify, the chemical bond energy to drop, and the structure or depolymerization and degradation. As mentioned in "Tiangong Kaiqi", the properties of various substances refined by fire are changed. PAC may lose its polymerization characteristics after high temperature, and the stability will be greatly reduced. In low temperature environments, although microbial activity is weak, PAC molecules move slowly, which may reduce their flexibility and increase their brittleness, which affects the stability of practical applications. Therefore, PAC has different stability in different environments. To ensure its performance, it is necessary to store and apply it reasonably according to the characteristics of the environment, so that as advocated in "Tiangong Kaiwu", it can be used to the best of its ability.