抑菌型液体洗涤剂的配制及性能研究

Formulation and performance of bacteriostasis liquid detergent

设计并配制了系列含脂肪醇聚氧乙烯醚羧酸钠(AE_9C)和双癸基羟乙基甲基氯化铵(DEQ)复配体系的抑菌去污二合一液体洗涤剂,测试了所配制液体洗涤剂的耐寒和耐热及冻融稳定性,并采用Ross-Miles泡沫仪、立式去污机及悬液定量法分别对产品的泡沫性能、去污力和抑菌性能进行了评价,优化了配方组成。结果表明:所配制的洗涤剂具有很好的稳定性;洗涤剂的泡沫性能和去污力不受水硬度的影响,当AE_9C/DEQ的质量比为7∶3时,体系的发泡力最低,当AE_9C/DEQ的质量比等于或低于2∶8时,洗涤剂去污力测试结果不合格;配方中AE_9C/DEQ的质量比为7∶3,6∶4和5∶5时,洗涤剂对金黄色葡萄球菌和大肠埃希氏菌的抑菌率均为100%。

Bacteriostasis liquid detergent containing sodium fatty alcohol ether carboxylate （AE9C） anddidecylmethylhydroxyethylammonium chloride （DEQ） was designed and formulated. The cold resisting, heatresisting and freeze - thaw stability of the liquid detergent products were tested, and their foaming power,detergency as well as bacteriostasis efficacy was evaluated by Ross - Miles foam meter, Terg - O - Tometer andsuspension quantitative method, respectively. The results showed that the liquid detergent product displaysexcellent stability. Its foaming power and detergency are not affected by water hardness. When the mass ratio ofAE9C to DEQ is 7：3 ,foaming power of the product achieves the minimum. When the mass ratio of AE9C toDEQ is lower than 2：8 ,its detergency test result is unqualified. When the mass ratio of AE9C to DEQ is 7： 3,6：4 or 5 ： 5, all the bacteriostasis rate of the three kinds of liquid detergent product against Staphylococcusaureus and Escherichia coli achieves 100%.