Concentration dependences of sodium dodecyl sulfate (SDS) in the concentration range of 0.005−0.03 mole (with the step of 0.001 mole) in water-ethanol solutions with a percentage ratio of 100:0, 92:8, 85:15, 70:30 were investigated by the methods of pH and conductometry. It was shown that micelle formation occurs at concentrations of SDS ~11 mol/L, ~9 mol/L, ~11 mol/L, and ~17 mol/L in aqueous ethanolic solutions. From the concentration dependence of SDS, it was found that a noticeable decrease in the critical concentration of micellization occurs in aqueous ethanol solutions at 8% ethanol content.
| Mualliflar | Гофуров, Ш.П., Бозорова, Д.Т., Коххаров, А.М., Исмаилова, О.Б. |
|---|---|
| Jurnal | O‘zbekiston fizika jurnali |
| Nashr sanasi | 2019-06-21 |
| Jild | 21 |
| Son | 3 |
| Betlar | 200-202 |
| Til | Rus |
| DOI | 10.52304/.v21i3.82 |
DOI: 10.52304/.v21i3.82 · Maqolaning asl sahifasi
In connection with the lack of a satisfactory solution of the problem of globular cluster’s classification (GC) of stars we have modelled apparent density by a function with three free parameters. Basic statistical…
The article presents the latest status of the Maidanak 1 m telescope, instruments and the related facilities of the Observatory as well as the science projects. The renovation of the 1 m telescope of Carl Zeiss…
Defect formation on the surface of zinc oxide is investigated using the low-energy electrons by total current spectroscopy method. The formation of cation and anion vacancies on the surface is shown. The energy…
The absorption of linearly polarized light in a semiconductor dimension-quantized well related both to optical transitions between branches of light and heavy holes and between dimension-quantized subbands has been…
Прозрачные керамические YAG-лазерные материалы с высоким содержанием неодима исследуются для применения в преобразовании солнечной энергии в энергию лазерного излучения с помощью метода имитации трассировки лучей…
The influence of a thermal annealing on electric conduction of silicon monocrystals doped by nickel has been studied. Also, an analysis of the morphology of impurity microinclusions under the influence of heat treatment…
Numerical calculation was used to analyze the generation of the third harmonic in argon gas. The duration of the main pulse was chosen to be 5 fs. The role of gas ionization and high-order dispersion effects (up to…
The results of decreasing the epitaxy temperature up to 900−1100 K to produce sufficiently perfect films under vacuum deposition and by ion stimulation have been presented.
In this paper, experimental results obtained by the method of spectroscopy of the characteristic energy loss of electrons are presented to study the composition and electronic structure of Cu(100) with silicon surface…
The processes of formation of thin nanosized films of Ba silicides and alkaline elements during their low-energy and high-dose implantation in Si(111) and Si(100) have been studied using electron spectroscopy…