月桂酰丙氨酸钠的复配性能研究

摘要

用月桂酰丙氨酸钠(SLA)分别与脂肪醇聚氧乙烯醚硫酸钠(AES)、椰油酰胺丙基甜菜碱(CAB)和烷基糖苷1214(APG)进行复配,测定了复配体系的表面活性、泡沫性能、润湿性能和钙皂分散性能.结果表明:单一SLA的表面活性优于其他3种表面活性剂,复配体系的表面活性总体随SLA加入量的增加呈上升趋势;SLA的泡沫性能和钙皂分散性能较差,但是通过复配,SLA的两个性能均得到改善;当SLA与AES、CAB和APG三者的质量比均在5:1时,复配体系的润湿力达到最大,均产生协同作用.%The blends of surfactant sodium N-lauroylalanine (SLA)separately with sodium polyethoxy fatty alcohol sulfate (AES),cocoamidopropyl betaine (CAB)and alkyl polyglucoside 1214 (APG)were prepared. Their surface activity,foaming performance,wetting power and lime soap dispersing power were investigated. Results show that SLA displays a better surface activity than that of AES,CAB and APG;the surface activity of the blend systems displays an upgrading trend with the increasing dosage of SLA;the foaming performance and lime soap dispersing power of the SLA are poor,but by blending,both performance of SLA can be improved. When mass ratios SLA: AES,SLA: CAB and SLA: APG are all at 5:1,the wetting power of all the blend systems reach the maximum. Such results show that there is synergistic effect between the individual surfactants.