Formula design and performance study of a long-term antibacterial laundry detergent
A laundry detergent with long-term antibacterial effect was obtained by comparing the performance of six different bactericides in the formula.According to Group Standard T/ZGXX0004-2022"Evaluation Method for Long-term Antibacterial Effect of Daily Chemical Products",the long-term antibacterial effects of six laundry detergents were tested.The test results showed that only silver ion and polyhexamethylene biguanide hydrochloride(PHMB)had a certain long-term antibacterial ability,and only PHMB could meet the requirements of the standard.By adjusting the amount of PHMB added,the long-term antibacterial effect,detergency and stability of the detergent were tested,and a non-ionic formula of long-term antibacterial laundry detergent was obtained.When the amount of PHMB added was 1.2％,the detergent had the long-term antibacterial performance required by the standard,and its detergency was good.When the amount of PHMB added was further increased to 2.0％,the laundry detergent could achieve good long-term antibacterial performance,and the detergency was significantly decreased but could still meet the requirements.In the high-and low-temperature tests,the appearance,physical and chemical indexes,detergency and long-term antibacterial performance had no significant change.
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