Estimation of Physicochemical Properties of Ionic Liquid C6MIGaCl4Using Surface Tension and Density

2007 ◽  
Vol 111 (12) ◽  
pp. 3197-3200 ◽  
Author(s):  
Jing Tong ◽  
Qing-Shan Liu ◽  
Wei Guan ◽  
Jia-Zhen Yang
Keyword(s):  
Surface Tension ◽  
Ionic Liquid ◽  
Physicochemical Properties

Estimation of Physicochemical Properties of Ionic Liquid HPReO4Using Surface Tension and Density†

2009 ◽  
Vol 54 (9) ◽  
pp. 2498-2500 ◽  
Author(s):  
Shu-liang Zang ◽  
Da-Wei Fang ◽  
Jian-xin LI ◽  
Yu-Yang Zhang ◽  
Shuang Yue
Keyword(s):  
Surface Tension ◽  
Ionic Liquid ◽  
Physicochemical Properties

Physicochemical properties of proton conducting membranes based on ionic liquid impregnated polymer for fuel cells

2006 ◽  
Vol 16 (23) ◽  
pp. 2256 ◽  
Author(s):  
S. S. Sekhon ◽  
Boor Singh Lalia ◽  
Jin-Soo Park ◽  
Chang-Soo Kim ◽  
K. Yamada
Keyword(s):  
Ionic Liquid ◽  
Fuel Cells ◽  
Physicochemical Properties ◽  
Proton Conducting ◽  
Conducting Membranes

Electrocapillary Curves for the Hg/Ionic Liquid Interface

2009 ◽  
Vol 64 (3-4) ◽  
pp. 263-268 ◽  
Author(s):  
Andrzej Lewandowski ◽  
Tomasz Majkowski ◽  
Maciej Galinski
Keyword(s):  
Surface Tension ◽  
Ionic Liquid ◽  
Electrode Potential ◽  
Room Temperature ◽  
Narrow Range ◽  
Room Temperature Ionic Liquids ◽  
Second Derivative ◽  
Drop Volume ◽  
Potential Of Zero Charge ◽  
Weight Drop

Abstract Electrocapillary curves (surface tension γ as a function of the electrode potential E) for a series of room-temperature ionic liquids (RTILs) were measured using a mercury dropping electrode with the drop-weight (drop-volume) technique. The curves γ = f (E) for the Hg/RTIL interface have one maximum and may be approximated with a polynomial of sixth-order. There are no ‘humps’ in the curves. The interfacial tension of the Hg/RTIL system changes with potential E in a monotonic way. The second derivative of γ = f (E) leads to a polynomial of fourth order, indicating the capacitance of the Hg/RTIL interface. The potential of zero charge is within a relatively narrow range. The specific capacitance at the minimum is of the order 10 μF/cm2

scholarly journals Estimation of Various Physicochemical Properties of Walnut Oil from Different Areas of Northern Kpk, Pakistan

2021 ◽  
Vol 65 (4) ◽  
Author(s):  
Yasir Uddin ◽  
Nasir Mehmood Khan ◽  
Farman Ali ◽  
Shujaat Ahamd ◽  
Zia Ullah Khan ◽  
...  
Keyword(s):  
Surface Tension ◽  
Oleic Acid ◽  
Linoleic Acid ◽  
Physicochemical Properties ◽  
Olive Oil ◽  
Food Processing ◽  
Juglans Regia ◽  
Acid Value ◽  
Walnut Oil ◽  
Iodine Values

Abstract. In this study, the physicochemical properties of walnut (Juglans regia L.) oils collected from different sites in Khyber PakhtoonKhwa (KPK), Pakistan were investigated. The obtained walnut oils showed variation in viscosity, surface tension, density, acid, saponification, and iodine values. The oil obtained from the Madyan (Sample E) showed the lowest density (0.981 g/cm3), surface tension (34.76×10-3 N/m), viscosity (15.0595 cp) saponification values 84.15 (mg KOH/g of oil) and acid value 3.5 (mg KOH per gram oil) amongst all. The physicochemical properties of all the oils were also compared to olive oil (standard) where sample E showed similarities in such properties compared to olive oil. Moreover, higher concentrations of oleic acid (41 %) and linoleic acid (9 %) were detected in the walnut oil of sample E in GC/MS analysis. The similarities of walnut oil obtained from Madyan to that of standard (olive oil) thus affirm it as best quality oil and suitable for food processing purposes.      Resumen. En este estudio se investigaron las propiedades fisicoquímicas del aceite de nuez (Juglans regia L.) recolectado de diferentes sitios en Khyber PakhtoonKhwa (KPK), Pakistán. Los aceites de nuez obtenidos mostraron variación en los valores de viscosidad, tensión superficial, densidad, acidez, saponificación e índice de yodo. El aceite obtenido del Madyan (Muestra E) mostró la menor densidad (0.981 g/cm3), tensión superficial (34.76 × 10-3 N/m), viscosidad (15.0595 cp), valores de saponificación 84.15 (mg KOH/g de aceite) y valor ácido 3.5 (mg KOH por gramo de aceite) entre otros. Las propiedades fisicoquímicas de todos los aceites también se compararon con el aceite de oliva (estándar); la muestra E mostró similitudes en las diferentes propiedades en comparación con el aceite de oliva. Además, se determinaron concentraciones más elevadas de ácido oleico (41 %) y ácido linoleico (9 %) en el aceite de nuez de la muestra E mediante el análisis GC/MS. Las similitudes del aceite de nuez obtenido de Madyan con el estándar (aceite de oliva) lo afirman como aceite de mejor calidad y adecuado para el procesamiento de alimentos.

Physicochemical properties of sodium lignosulfonates (NaLS) modified by laccase

Holzforschung ◽  
2012 ◽  
Vol 66 (7) ◽  
pp. 825-832 ◽  
Author(s):  
Haifeng Zhou ◽  
Dongjie Yang ◽  
Xiaolei Wu ◽  
Yonghong Deng ◽  
Xueqing Qiu
Keyword(s):  
Surface Tension ◽  
Physicochemical Properties ◽  
Opposite Effect ◽  
Adsorption Process ◽  
Gel Permeation Chromatography ◽  
Sodium Lignosulfonate ◽  
Substitution Pattern ◽  
Cement Pastes ◽  
Gel Permeation ◽  
Initial Decrease

Abstract The ability of commercial laccase for improvement of the physicochemical properties of sodium lignosulfonate (NaLS) without any mediator has been investigated. Surface tension, adsorption characteristics, rheological behaviors and fluidity of cement pastes were in focus. Gel permeation chromatography (GPC) shows an initial decrease and then an extensive increase of molecular weight (MW) of NaLS after incubation with laccase. Parallel to MW decrement, the content of phenolic groups is increasing, while an MW increment has the opposite effect. The UV-Vis spectra and the zeta potential of NaLS do not indicate further modification of the substitution pattern on the aromatic ring. The surface tension of NaLS and the adsorbed amount of NaLS on MgO particles is elevated after laccase treatment. The electrostatic attraction between MgO particles and NaLS is the main driving force during this adsorption process. The dispersion efficiency of laccase modified NaLS on the MgO slurry and cement paste is improved.

Imidazolium-Based Ionic Liquid as Modulator of Physicochemical Properties of Cationic, Anionic, Nonionic, and Gemini Surfactants

2018 ◽  
Vol 21 (3) ◽  
pp. 355-366 ◽  
Author(s):  
Amit Kumar ◽  
Manoj K. Banjare ◽  
Srishti Sinha ◽  
Toshikee Yadav ◽  
Reshma Sahu ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Physicochemical Properties ◽  
Gemini Surfactants

Effect of oxygen and bismuth impurities on the structural and physicochemical properties of nickel melts

2021 ◽  
Vol 1 ◽  
pp. 73-83
Author(s):  
K.S. Filippov ◽  
Keyword(s):  
Surface Tension ◽  
Physicochemical Properties ◽  
Pure Nickel ◽  
The State ◽  
Combined Effect ◽  
Negative Deviation ◽  
Raoult’S Law ◽  
Compression Effect ◽  
Heat Resistant ◽  
Effect Of Oxygen

There are practically no data in the literature on the combined effect of oxygen and bismuth impurities on the structural and physicochemical properties of nickel melts or heat-resistant alloys based on it. In the presented work, the state of pure nickel and nickel melts containing (0.005-0.01) bismuth and oxygen is considered in the process of refining from oxygen and bismuth impurities. The influence of these impurities on the structural and physicochemical properties was studied, which was evaluated by the parameters of the density and surface tension of the melts. In nickel melts with bismuth and oxygen, a compression effect and a negative deviation from Raoult’s law were observed. The effect of an increase in the surface tension of a nickel melt containing oxygen with an increase in the concentration of bismuth is found, which corresponds to the isotherm of desorption of excess substance from the surface into the bulk.

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