碳氟醇对阳离子表面活性剂表面活性及胶团反离子结合度的影响

The Effect of2,2,3,3,4,4,4-Heptafluorobutanol on Surface Activity and Counterion Binding Degree of Cationic Surfactants C10H21N(CH3)3Br and C12H25N(CH3)3Br Aqueous Solutions

用表面张力及电动势法研究了Ｃ１０Ｈ２１Ｎ（ＣＨ３）３Ｂｒ、Ｃ１２Ｈ２５Ｎ（ＣＨ３）３Ｂｒ与Ｃ３Ｆ７ＣＨ２ＯＨ混合水溶液的表面与胶团性质．结果表明，对于阳离子表面活性剂，Ｃ３Ｆ７ＣＨ２ＯＨ的加入一方面增加表面活性，另一方面降低胶团反离子结合度．后者不同于阴离子表面活性剂／Ｃ３Ｆ７ＣＨ２ＯＨ混合体系，可归因于Ｃ３Ｆ７ＣＨ２ＯＨ略有酸性，因而具备一些类似阴离子表面活性剂的性质．

The surface and micelle properties of C10H21N(CH3)3Br/C3F7CH2OH and C12H25N (CH3)3Br/C3F7CH2OH aqueous solutions are investigated by surface tension and electromorive force methods. The results show that the surface activity of solution is increased and the counterion binding degree of micelle is decreased when C3F7CH2OH is added into cationic surfactant aqueous solution. The latter differs from that of anionic surfactant/C3F7CH2OH systems, which should be due to the acidity of C3F7CH2OH.