椰子油乙氧基化物与阴离子表面活性剂协同效应研究

Synergistic Effect Between Coconut Oil Ethoxylate and Anionic Surfactants

摘要:

摘要：对椰子油乙氧基化物-30EO（COE-30）与直链烷基苯磺酸（LAS）、脂肪醇聚氧乙烯醚硫酸钠（AES-2）及脂肪醇聚氧乙烯醚羧酸钠（AEC-5）复配的二元体系进行研究，运用非理想溶液理论计算混合胶束和混合吸附层的组成及二者在混合胶束和混合吸附层中协同作用参数。结果表明，复配体系在混合胶束和混合吸附层显示出较强的协同作用，混合胶束中作用参数|βm|= 2~6，混合吸附层中作用参数|βσ|= 2~6。三个复配体系在形成胶束能力和降低表面张力效率方面存在协同增效作用，同时COE-30/AES-2和COE-30/AEC-5体系在降低表面张力能力方面也存在协同增效作用。

Abstract:

Abstract: The synergistic effect of three binary mixtures of nonionic/anionic surfactants including coconut oil ethoxylate(COE-30)/sodium linear alkylbenzene sulfonate(LAS), coconut oil ethoxylate(COE-30)/sodium alcohol ether sulphate(AES-2) and coconut oil ethoxylate(COE-30)/fatty alcohol ether carboxylates(AEC-5) was investigated. Non-ideal solution theory was used to determine the composition of the two components and the synergistic parameters in both mixed micelle and mixed absorption monolayer. The data indicated there is relatively strong synergistic effect in three binary systems. The synergistic parameters in mixed micelle and mixed absorption monolayer range from -6 to -3. The three blending systems exhibit synergistic effect in surface tension reduction efficiency and capacity for formation of mixed micelles, COE-30/AES-2 and COE-30/AEC-5 systems exhibit synergistic effect in surface tension reduction capacity as well.