Carbopol 940 , this seemingly ordinary white loose powder, actually plays an extremely important role in the cosmetics and pharmaceutical fields. Its strong hygroscopicity and unique acidic properties make it a multifunctional raw material. The acidic group content in its molecular structure is as high as 52-68%, which gives it a certain acidity and also makes the pH value of its 1% aqueous dispersion 0. When carbomer is neutralized by alkaline substances, its molecular chains will exhibit a dispersed and extended state due to the repulsion of negative charges, thereby exhibiting astonishing expansion and viscosity.
Among the many variants of Carbopol, the Carbopol 940 is undoubtedly a brilliant star. As a white powder cross-linked polyacrylic polymer, Carbopol 940 not only has extremely high rheological modification ability, can produce unimaginable viscosity, but also can form bright and transparent gel or hydrogel, even cream texture. This makes it an indispensable part of the cosmetics and pharmaceutical industry.
Carbopol 940, as a water-soluble thickener, has a first-class effect. Not only that, it can also serve as a suspension agent, stabilizer, and emulsifier, providing comprehensive protection for products. Especially in advanced cosmetics and medicinal excipients, the transparent matrix of Carbopol 940 brings unique texture and visual effects to the product.
However, it is not easy to make transparent gel with Carbopol 940. Due to its swelling process when combined with water, it is necessary to give sufficient time for it to fully dissolve in water. If the time is too short, carbomer is easy to agglomerate, affecting the quality of gel. In addition, other components in the system are also factors that need to be considered. Many natural plant ingredients, such as flower water and extracts, contain electrolytes, which may affect the performance of Carbopol 940.
Next, let's take a closer look at the process of Carbopol 940 configuring transparent gel. Firstly, add an appropriate amount of Carbopol 940 to the beaker, moisten with a small amount of alcohol, and pre disperse. Then, soak the pre dispersed Carbopol 940 in water at 80 ℃. It should be noted that even without stirring, Carbopol 940 can dissolve basically within 4-6 hours. This is because its special structure makes it easy for water to penetrate and expand.
After the preparation of Carbopol 940 solution, other components can be mixed with Carbopol. In order to adjust the pH value of gel and make it more transparent and viscous, alkaline substances such as triethanolamine or tea can be used for neutralization. However, it should be noted that the amount of triethanolamine is difficult to control, and excessive use may dilute the system. Therefore, it is recommended to use diluted tea (such as a 10% aqueous solution) for neutralization. During the addition process, observe the changes in the system while stirring. When the system becomes more transparent and the state becomes more viscous, its pH value can be tested.
Hubei Xindesheng Materials Co., Ltd. is located in the United Science and Technology City of Gedian Development Zone, Ezhou City, Hubei Province. It is a high-tech enterprise that focuses on the research and development, production, sales, and technical services of biochemical reagents and polymer materials. The Carbopol 940 it produces has won widespread trust from customers for its excellent transparency and stable quality. As an enterprise with import and export rights, Xindesheng not only enjoys a high reputation in the domestic market, but also actively explores the international market and provides high-quality products and services to global customers.
