低泡表面活性剂AMEO的合成及性能研究  

Synthesis and properties of low-foaming surfactant AMEO

作　　者：王文杰 孙永强 周婧洁 孙晋源 梁慧斌 刘瑜琦 Wenjie Wang;Yongqiang Sun;Jingjie Zhou;Jinyuan Sun;Huibin Liang;Yuqi Liu(China Research Institute of Daily Chemical Industry Co.,Ltd,Taiyuan,Shanxi 030001,China)

机构地区：[1]中国日用化学研究院有限公司,山西太原030001

出　　处：《日用化学工业（中英文）》2023年第1期1-7,共7页China Surfactant Detergent & Cosmetics

基　　金：国家重点研发计划资助项目(201903D421034)。

摘　　要：以壬二酸二单乙醇酰胺为原料,通过乙氧基化反应合成了一系列具有不同氧乙烯含量的壬二酸二单乙醇酰胺聚氧乙烯醚(AMEO-p,p=30,40,50,60,70)低泡型表面活性剂。通过红外谱图证明合成了目标产物,并测定了实际氧乙烯含量,其结果与理论氧乙烯含量基本一致。测试了系列AMEO-p的润湿性,去污性,泡沫性等应用性能,优选出润湿性能好,去污力强,泡沫低的AMEO-50表面活性剂。并对其表面性质与物化性能进行了系统研究。结果表明,AMEO-50的临界胶束浓度为0.5 g/L,平衡表面张力为31.21 mN/m。其质量浓度的增加会导致动态表面张力达到平衡的时间缩短,且表面张力降低的速率增快。另外AMEO-50可以与水任意比例互溶,无凝胶相区,具有高浊点,低凝固点的特性,是一种应用温度范围广、可用于超浓缩洗涤产品配方中的低泡型表面活性剂。A series of low-foaming surfactants with different oxyethylene content,i.e.,H(OCH2CH2)xOCH2CH2NHOC(CH2)7 CONHCH2CH2O(CH2CH2O)yH(AMEO-p,p=30,40,50,60 a n d 70),w e r e synthesized by ethoxylation reaction.The target product was characterized by infrared spectroscopy,and the actual oxyethylene content was determined which was found to be in agreement with the theoretical oxyethylene content.The application properties such as wettability,detergency and foaming performance of AMEO-p were tested,and AMEO-50 was preferably selected due to its good wettability,strong detergency and low foam.The surface activity and physical and chemical properties were systematically studied.The results showed that,the relative stain removal ratio of AMEO-50 could reach 0.91 for carbon black stained cloths and 0.67 for sebum-stained cloths,and the critical micelle concentration of AMEO-50 was 0.5 g/L,at which the surface tension was 31.21 mN/m.The increase in concentration resulted in a shorter equilibrium time for the dynamic surface tension and a faster rate of surface tension reduction.In addition,AMEO-50 was miscible with water in any mixing ratio,it had high cloud point and low freezing point,it had no gel phase area,and it was a low-foaming surfactant that could be used in the formulation of ultra-concentrated detergent products with a wide range of application temperature.

关 键 词：低泡 表面活性剂 壬二酸二单乙醇酰胺 乙氧基化 性能 

分 类 号：TQ423[化学工程]