α-癸基甜菜碱两性表面活性剂复配行为研究

Study of blending behavior of α-capric betaine amphoteric surfactant

对天然油脂基两性表面活性剂α-癸基甜菜碱(α-CB)分别与阳离子表面活性剂十二烷基三甲基溴化铵(DTAB)、阴离子表面活性剂十二烷基硫酸钠(SDS)及非离子表面活性剂八聚乙二醇正十二烷基单醚(BL-8SY)复配的二元混合体系性能进行研究,探讨各类表面活性剂与两性表面活性剂α-CB间的相互作用。实验结果表明,两性表面活性剂α-CB与BL-8SY复配时近似于理想混合,与DTAB复配时有较弱的协同作用,而与SDS复配时有较强的协同作用。

The behaviors of binary blending systems of fatty - based amphoteric surfactant α - capric betaine （α-CB ）blended respectively with the typical cationic surfactant dodecyhrimethylammonium bromide （DTAB）, anionic surfactant sodium dodecyl sulfate （SDS）and nonionic surfactant n -dodecyl alcohol ethoxylate - 8EO （BL- 8SY）were investigated. The interaction between the surfactants in the binary blending systems was discussed. Experimental results showed that α- CB/BL - 8SY mixture is almost close to an ideal mixture. The synergism effect in α - CB/DTAB blending systems is rather weak while that in α- CB/SDS blending systems is rather strong.