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Application of hydroxypropyl methylcellulose (HPMC) in detergents

Hydroxypropyl methylcellulose is a propylene glycol ether of methylcellulose, in which the hydroxypropyl and methyl groups are bonded to the anhydrous glucose ring of cellulose by ether bonds. It is a non-ionic cellulose ether and is easily dispersed in In cold water, the solution can form a thin film after drying, and the aqueous solution has pseudoplastic fluid characteristics and has a diluting effect. A reversible thermal gel is formed after being heated. The gel formation temperature depends on the relative content and degree of substitution of methyl and hydroxypropyl groups, but the surface tension increases when heated. This is contrary to the properties of ordinary surfactants, which are concentrated at the interface. The interfacial concentration is significantly higher than the concentration inside the solution. It is commonly used as food water-holding agent. The reversible thermal gel properties can prevent various fillings (steamed buns, dumplings, etc.) from shrinking and “drying” due to overheating. It can be used for fried French fries, etc. to reduce the oil content and consumption of products. The amount of oil, as well as the functions of increasing surface activity and stabilizing foam, can lead to an increase in the volume of baked products, and can form a good organizational structure in bread mixed with rice flour or soybean flour.

If it is fabric, hydroxypropyl methylcellulose HPMC is an anti-stain re-adsorption ingredient. During washing, it is preferentially adsorbed to the surface of the fiber to prevent dirt from re-depositing on it and can be washed away during rinsing. The English concept probably belongs to the function of “soil release” (it can also be considered as anti-redeposition soil, but the former is more vivid).

Hydroxypropyl methylcellulose HPMC is a non-ionic thickener. There are different models. Different models have different viscosities and can also improve fluids. It can be used in detergents, shampoos, shower gels, facial cleansers, and can also be used to thicken emulsification systems.

Advantages of using in detergents:

1. As a non-ionic thickener, the viscosity of the thickened surfactant system is relatively stable with temperature changes, and it will not be as easy to jelly as cold-resistant Nacl.

2. Electrolyte resistance

3. Improve the fluid of the system, giving it a silky feel, while making the cleaning effect smoother, improving skin feel, and improving wet and dry combability of hair.

However, it easily condenses in cold water, so pay attention to the correct method of dissolving HPMC.

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