Experimental Data and Correlation of Surface Tensions of the Binary and Ternary Systems of Water + Acetonitrile + 2-Propanol at 298.15 K and Atmospheric Pressure

Rafati, Amir Abbas; Bagheri, Ahmad; Najafi, Mojgan

doi:10.1021/je1001329

Cited by 33 publications

(10 citation statements)

References 28 publications

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“…To examine this possibility, we used solutions of known surface tensions that consisted of varying mole fractions of water/acetonitrile mixtures (Table 1). 39 These solution mixtures were used as spray solvents in electrostatic spay where neat benzoylecgonine (2 µg/mL) analyte dried on the hydrophobic paper was ionized in the process. Because the electrostatic spay ionization of dry samples is a function of solubility and wettability, we anticipated a maximum ion signal to be recorded when the surface tension of the spray solvent approximately equaled the surface energy of the hydrophobic paper.…”

Section: Ionization Modes With Changing Surface Energiesmentioning

confidence: 99%

Determining Surface Energy of Porous Substrates by Spray Ionization

et al. 2019

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We have developed a new spray-based method for characterizing surface energies of planar, porous substrates. Distinct spray modes (electrospray versus electrostatic-spray), from the porous substrates, occur in the presence of an applied DC potential after wetting with solvents of different surface tension. The ion current resulting from the spray process maximizes when the surface energy of the porous substrate approaches the surface tension of the wetting solvent. By monitoring selected ion current (e.g., benzoylecgonine, m/z 290→168) with a mass spectrometer or total ion current with an ammeter, the solvent surface tension yielding the maximum ion current was determined to indicate the surface energy of the solid. Detailed evaluations using polymeric substrates of known surface energies enabled effective calibration of the approach that resulted in the correct estimation of the surface energy of hydrophobic paper substrates prepared by gas-phase silanization. A three-parameter empirical model suggests that the experimentally observed ion current profile is governed by differential partitioning of analyte controlled by the interfacial forces between the wetting solvent and the porous substrate.

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Section: Ionization Modes With Changing Surface Energiesmentioning

confidence: 99%

Determining Surface Energy of Porous Substrates by Spray Ionization

et al. 2019

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“…The models differ in the way in which the molar surface areas of the components are calculated and in the assumptions concerning the activity coefficients of the components both in the surface and in the bulk liquid phases [1]. Alcohols, either alone or in solutions (water, acetonitrile), are very widely used in the chemical, pharmaceutical and cosmetic industries [2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Application of the UNIFAC model for prediction of surface tension and thickness of the surface layer in the binary mixtures

Rafati

Bagheri

Khanchi

et al. 2011

Journal of Colloid and Interface Science

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“…As shown in liquid absorption tests of untreated PET and PA (SI, Table S1), the untreated PA absorbed slightly more high surface tension liquid, e.g., water [38] (72.09 mN m -1 ) but less low surface tension liquid, e.g., acetonitrile and ethyl acetate, than untreated PET. The surface tension of the functional ink (23.9 mN m -1 ) is very similar to acetonitrile (27.76 mN m -1 ) [38] and ethyl acetate (24.11 mN m -1 ) [39]. This means the PET might have stronger ink-filament interaction than PA due to better wettability with the functional ink.…”

Section: Resultsmentioning

confidence: 83%

Digital inkjet functionalization of water-repellent textile for smart textile application

Seipel

Nierstrasz

2018

J Mater Sci

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Digital inkjet printing is a production technology with high potential in resource efficient processes, which features both flexibility and productivity. In this research, waterborne, fluorocarbon-free ink containing polysiloxane in the form of micro-emulsion is formulated for the application of water-repellent sportsand work wear. The physicochemical properties of the ink such as surface tension, rheological properties and particle size are characterized, and thereafter inkjet printed as solid square pattern (10 9 10 cm) on polyester and polyamide 66 fabrics. The water contact angle (WCA) of the functional surfaces is increased from \ 90°to ca. 140°after 10 inkjet printing passes. Moreover, the functional surface shows resistance to wash and abrasion. The WCA of functional surfaces is between 130°and 140°after 10 wash cycles, and is ca. 140°after 20000 revolutions of rubbing. The differences in construction of the textile as well as inkfilament interaction attribute to the different transportation behaviors of the ink on the textile, reflected in the durability of the functional layer on the textile. The functionalized textile preserves its key textile feature such as softness and breathability. Inkjet printing shows large potential in high-end applications such as customized functionalization of textiles in the domain of smart textiles.

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Experimental Data and Correlation of Surface Tensions of the Binary and Ternary Systems of Water + Acetonitrile + 2-Propanol at 298.15 K and Atmospheric Pressure

Cited by 33 publications

References 28 publications

Determining Surface Energy of Porous Substrates by Spray Ionization

Determining Surface Energy of Porous Substrates by Spray Ionization

Application of the UNIFAC model for prediction of surface tension and thickness of the surface layer in the binary mixtures

Digital inkjet functionalization of water-repellent textile for smart textile application

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