摘要
研究了含三嗪环阴离子Gemini表面活性剂增溶、流变、溶致液晶、囊泡等性能。结果表明:增溶量随Gemini表面活性水基和联接基长度)对其水溶液的黏度有相同的影响;C6-2-C6、C8-2-C8、C8-3-C8、C8-4-C8、C8-6-C8、C12-2-C12在质量分数剂疏水链长度的增长而增大,C8-n-C8(n=23,4,6,)的增溶量随联接基长度增加而增加,C12-2-C12与SDS的复配体系比SDS的增溶量大,C12-2-C12与CTAB的复配体系比这2种表面活性剂单独使用时的增溶量小;Gemini表面活性剂溶液分子结构(疏分别为42.3%,37.8%,33.5%,30.4%,27.6%2,0.3%时均产生层状的溶致液晶;0.01 mol/L的单一Gemini表面活性剂水溶液均不能形成囊泡,而当n(C12-2-C12)∶n(CATB)为8∶2或9∶1时,复配体系的水溶液形成了大量的囊泡结构。
The properties such as solubilization, viscosity, Iyotropic liquid crystals and vesicle of Gemini surfactants are studied in this paper. The results show that the solubilization increases with the increase of the hydrophobic chains of Gemini surfactants. The longer spacer length of Gemini surfactants C8-n-C8 （ n = 2,3,4, 6 ） leads to the higher solubilization ability. Compared with SDS,the mixed C12-2-C12/SDS system shows higher solubilization ability. However, the solubilization ability of the mixed CI2-2-C12/CTAB is lower than that of C12-2-C12 or CTAB alone. The nature of surfactant molecules （hydrophobic and the spacer groups parts） has the same influence on the viscosity of aqueous Gemini surfactant solution. The aqueous solution of Gemini surfactants, such as C6-2-C6 , C8-2-C8 , C8-3-Ca , C8-4-C8 , C8- 6-C8 and C12-2-C12. can form lyotropic liquid crystals when their mass fraction is 42. 3%, 37.8%, 33.5%, 30.4%, 27, 6% ,20, 3% respectively. 0. 01 mol/L aqueous solution of Gemini surfaetants,such as C6-2-C6, C8-2-C8, C8-3-C8, C8-4-C8 ,C8-6-C8 and C12-2-C12 alone,can not form vesicles. However,when n（ C12-2-C12）/n（CATB） is 8/2 or 9/1 ,the aqueous solution of the mixed surfactants can form a mass of vesicles.
出处
《现代化工》
CAS
CSCD
北大核心
2011年第11期29-33,35,共6页
Modern Chemical Industry
