کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
597798 | 1454082 | 2006 | 7 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Effect of procaine hydrochloride on the micellization of double tailed surfactants in the aqueous solution Effect of procaine hydrochloride on the micellization of double tailed surfactants in the aqueous solution](/preview/png/597798.png)
The effects of procaine hydrochloride (PC) on the micellization of two kinds of double tailed surfactants in aqueous solutions, sodium bis (2-ethyl-1-hexyl) sulfosuccinate (AOT) and didodecyldimethylammonium bromide (DDAB), were studied by surface tension measurements. The results revealed that PC could decrease the equilibrium surface tension and critical micelle concentration (cmc) of AOT, but it is opposite for DDAB. Their standard thermodynamic parameters of micellization, ΔGm°, ΔHm° and ΔSm°, have been calculated in aqueous solutions. The locations of PC in the two kinds of micelles were investigated by UV and fluorescence spectroscopy. It is found that the mixed micelle of AOT and PC could be formed, but the effect of PC on the micellization of DDAB is quite small.
Journal: Colloids and Surfaces A: Physicochemical and Engineering Aspects - Volume 290, Issues 1–3, 15 November 2006, Pages 157–163