两性与氨基酸型阴离子表面活性剂形成自增稠体系的性质研究  

Study on properties of self-thickening system composed of amphoteric surfactant and amino-acid based anionic surfactant

作　　者：袁旻嘉 董超 沈珮琳 卢海伟[2] 王进爽[2] 方波[2] 郭奕光 

机构地区：[1]上海家化联合股份有限公司,上海201702 [2]华东理工大学化工学院流变学研究室,上海200237

出　　处：《日用化学工业》2015年第1期11-16,共6页China Surfactant Detergent & Cosmetics

摘　　要：通过调节质量比和p H,获得了由两性表面活性剂椰油酰胺丙基甜菜碱(CAPB)和氨基酸型阴离子表面活性剂月桂酰基肌氨酸钠(LS)复配的黏弹性胶束体系(自增稠体系)。通过低温冷冻透射电镜(Cryo-TEM)表征,确认了蠕虫状胶束结构。分析了Na Cl含量对体系黏度的影响;着重考察了黏弹性体系的黏温性和发泡性。结果表明,Na Cl含量(w<0.5%时)对该体系黏度影响较小,体系黏度的建立主要来自于质量比和体系p H;该体系在高温(40℃)时黏度降低,在低温(5℃)时黏度升高;当p H降低时,体系发泡性能变差。利用调节质量比和p H的方法,同时也能获得一系列氨基酸型阴离子表面活性剂和两性表面活性剂复配形成的自增稠体系,该方法具有一定的通用性。A viscoelastic micelle system （ self - thickening system） blended with an amphoteric surfactant, cocamidopropyl betaine （CAPB）, and an aminoacid based anionic surfactant, sodium lauroyl sarcosinate （LS） , was formed by adjusting the mass ratio and pH. The network of wormlike micelles in the blend was confirmed via characterization with Cryo - TEM images. Effect of NaCI dosage on the viscosity of the self - thickening system was identified and the viscosity -temperature characteristics as well as the foaming performance of the viscoelastic system were emphatically investigated. Results showed that when the NaCI content is low （w 〈 0. 5 % ） its effect on viscosity of the system is rather small. Establishment of viscosity of the system is mainly affected by mass ratio and pH of the system. The viscosity decreases at higher temperature （40 ℃ ） and increases at lower temperature （5 ℃ ）, respectively. The foaming performance becomes worse as pH declines. Adopting the methods of adjusting the mass ratio and the pH, a series of selfthickening systems formed by blending of anionic amino - acid based anionic surfactant and amphoteric surfactant can be obtained.

关 键 词：表面活性剂 复配 自增稠 蠕虫状胶束 黏温性 发泡性 

分 类 号：TQ423[化学工程]