摘要
以月桂酰谷氨酸钠(SLG)作为研究对象,采用动态泡沫分析仪对SLG及复配体系的泡沫性能进行研究,分析了复配体系的发泡性能和泡沫稳定性。结果表明,椰油酰甘氨酸钾(PCG)对SLG的泡沫性能有很好的提高作用,表现出良好的协同性。当m(PCG)∶m(SLG)=2∶8时最优,其中每平方毫米初始气泡个数(BC_(initial))为56.3 mm^(-2),约是单一SLG的1.2倍,说明发泡性能明显提高。气泡个数半衰期(t_(BC)1/2)为434.1 s,约是单一SLG的3.4倍,说明泡沫稳定性显著提升。此外,研究发现复配体系表现出更优异的表面特性,其混合临界胶束浓度(cmc)为0.0227%,显著低于单一SLG,呈一个数量级减小,表面极限吸附量(T_(max))明显高于单一SLG。
The foam properties of sodium lauroyl glutamate(SLG)and its compounded systems were investigated.The foaming ability and foam stability were measured by using a dynamic foam analyzer.The results showed that potassium cocoyl glycinate(PCG)could significantly enhance the foam properties of SLG due to its synergistic effect with SLG.At the optimum PCG/SLG mass ratio of 2∶8,the initial bubble count per square millimeter(BC_(initial))was 56.3 mm^(-2),which was approximately 1.2 times that of single SLG,and the half-life of bubble count(t_(BC)1/2)was 434.1 s,which was approximately 3.4 times of single SLG.Furthermore,this compounded system also exhibited excellent surface activity.The critical micelle concentration(cmc)of this surfactant mixture was 0.0227%and the maximum surface excess(T_(max))was relatively high.This work could provide important insights into the application of SLG in detergent products.
作者
汪哲铖
郑志辉
袁旻嘉
Zhecheng Wang;Zhihui Zheng;Minjia Yuan(Shanghai Qiran Biotechnology Co.,Ltd.,Shanghai 201702,China;Shanghai Jinjia Technology Co.,Ltd.,Shanghai 201210,China)
出处
《日用化学工业(中英文)》
北大核心
2025年第8期1035-1041,共7页
China Surfactant Detergent & Cosmetics
