Abstract
The composition and solubilization of the optimum microemulsion systems containing Triton X-100/pentan-1-ol/aliphatic hydrocarbon/water were studied with the ∊-β fishlike phase diagram method. The solubilities of the alkanol (SA), the mass fractions of the alkanol in the interfacial layer (AS) and the optimum solubilization parameters (SP∗) of the microemulsion systems with different aqueous phases (salt, acid, alkali) and with different α values were obtained and discussed. The SP∗ values increase significantly with the cation radius of the chlorides (NaCl, KCl, CsCl), but decrease slightly with the anion radius of the sodium halides (NaCl, NaBr, NaI). However, SP∗ values decrease with the increased salinities and NaOH contents. The trend was reversed for the acid systems. When the oil-water ratio (α) increases, the SA and AS values significantly increase, while the SP∗ values increase slowly. As the length of the carbon chain of the alkane molecules increases, both the SA and AS values increase, while the SP∗ values decrease significantly.
Kurzfassung
Die Zusammensetzung und Solubilisierung der optimierten Mikroemulsionssysteme Triton X-100/Pentan-1-ol/aliphatischer Kohlenwasserstoff/Wasser wurden mit der Methode des ∊-β-Fisch-Phasendiagramms untersucht. Die Löslichkeiten des Alkanols (SA), die Massenanteile des Alkanols in der Grenzschicht (AS) und die optimalen Solubilisierungsparameter (SP∗) der Mikroemulsionssysteme mit unterschiedlichen wässrigen Phasen (Salz, Säure, Alkali) und mit unterschiedlichen α-Werten wurden erhalten und diskutiert. Die SP∗-Werte erhöhen sich signifikant mit dem Kationenradius der Chloride (NaCl, KCl, CsCl), verringern sich jedoch geringfügig mit dem Anionenradius der Natriumhalogenide (NaCl, NaBr, NaI). Die SP∗-Werte nehmen jedoch mit zunehmenden Salzgehalten und NaOH-Gehalten ab. Bei den Säuresystemen war der Trend umgekehrt. Wenn sich das Öl-Wasser-Verhältnis (α) erhöht, nahmen die SA- und AS-Werte signifikant zu während sich die SP∗-Werte langsam erhöhen. Mit zunehmender Länge der Kohlenstoffkette der Alkanmoleküle nehmen sowohl die SA− als auch die AS-Werte zu, während die SP∗-Werte signifikant abnehmen.
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