What is the relationship between the cleaning ability of laundry detergent and the age of the stain?
Publish Time: 2024-11-05
The cleaning ability of laundry detergent is closely related to the age of the stain, and this relationship is affected by many factors.When the stain is first stained on the clothes, the stain molecules are mostly still on the surface of the clothing fibers. At this time, the active ingredients in the laundry detergent, such as surfactants, can quickly contact the stains. One end of the surfactant can adsorb on the stain particles, and the other end combines with water. In this way, the stain is pulled away from the clothing fibers and then washed away with the help of water flow. At this time, the cleaning effect of laundry detergent is often better. For example, a coffee stain that has just been spilled on a shirt can be easily removed by washing it with laundry detergent in time.However, as the age of the stain increases, the situation becomes complicated. The stain molecules have more time to penetrate into the clothing fibers and form a stronger bond with the fibers. For some stains containing oil or protein, they may undergo oxidation or denaturation between the fibers, making the stains more difficult to remove. Moreover, stains that have existed for a long time may attract other impurities such as dust, further increasing the difficulty of cleaning. For example, oil stains that have been left for several days may have penetrated deep into the cotton fibers, and the laundry detergent needs a longer time and a more complex mechanism of action to remove them.In addition, the long-term existence of stains may also change the local environment of the clothes, such as pH, which may affect the activity of certain ingredients in the laundry detergent. Some decontamination ingredients such as enzymes that are sensitive to pH may not work best in a changed environment, thereby reducing the overall decontamination ability of the laundry detergent. Therefore, in daily life, stains should be cleaned as soon as possible to fully utilize the decontamination ability of the laundry detergent and ensure the cleanliness of the clothes.
