论文部分内容阅读
正负离子表面活性剂在适当的条件下可以形成双水相系统,本研究通过在十六烷基三甲基溴化铵(CTAB)和十二烷基硫酸钠(SDS)混合体系水溶液中加入阴离子相同而阳离子不同的盐或阳离子相同而阴离子不同的盐,探索盐离子半径对正负离子表面活性剂混合体系双水相相行为的影响。结果表明,盐对体系相行为中的两个双水相区分别产生不同的影响,盐的阳离子主要对阴离子双水相区(ATPSa)产生影响,而盐的阴离子主要对阳离子双水相区(ATPSc)产生影响;且随离子半径的增大,其影响亦越大。
Anionic and anionic surfactants can form a dual aqueous system under appropriate conditions. In this study, anions were prepared by adding anions to cetyltrimethylammonium bromide (CTAB) and sodium dodecyl sulfate (SDS) The same and different cation or salt of the same cation and different salts to explore the salt ion radius of the positive and negative ion surfactant mixed aqueous two phase aqueous phase. The results show that salt has different effects on the two water-phase regions in the phase behavior of the system. The cation of the salt mainly affects the ATAPa, while the anion of the salt mainly exerts an effect on the cation-water-phase region ATPSc) have an impact; and with the ion radius increases, the greater the impact.