摘要
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。
The influence of salt on the behavior of aqueous two-phase was investigated by the addition of different salts with same anion or cation in the mixture of cationic and anionic surfactants. It was showed that the cation of salt mainly had effect on anionic two- phase region（ATPSa ） and the anion mainly affected cationic two-phase region （ATPSc）. And with increasing of ion radius, the effect becomes more significant.
出处
《青岛科技大学学报（自然科学版）》
CAS
2005年第4期304-307,共4页
Journal of Qingdao University of Science and Technology:Natural Science Edition
关键词
双水相
正负离子表面活性剂
阴离子双水相区
阳离子双水相区
aqueous two-phase
cationic and anionic surfactant
anionic two-phase region
cationic two-phase region
