A Relationship Between the Heat of Vaporization, Surface Tension, and the Solubility Parameters, Which Includes the Ratio of the Coordination Numbers, Based on Stefan's Rule

Pereira, Cláudio Nunes; Vebber, Guilherme Cañete

doi:10.1002/pen.24956

Cited by 8 publications

(5 citation statements)

References 33 publications

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“…Furthermore, this correlation is slightly better than that for surface tension values estimated using eq 1 (AAD: 3.1 mN/m). Although there are some large deviations for highly polar solvents such as glycerol, ethanol, and methanol (probably due to a lack of correction based on the coordination number of molecules at the surface layer), 22 the overall validity of eq 3 for surface tension prediction is quite good. Although this equation was optimized for the surface tension of pure liquids, we believe that it is also valid for the solid surface energy, solid−liquid interfacial tension, and solid−solid interfacial energy.…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

“…It is difficult to expand this equation to solid and interfacial surface energies because V mol cannot be uniquely defined for polymer and/or inorganic substrates and various types of interfacial energy (solid−liquid, solid−solid, and liquid−liquid). Although the prefactors 2.28, 1, and 1 and the size correction factor [V mol ] 1/5 in eq 1 can be roughly understood to refer to the thickness of the surface layer (interaction length and/or coordination number) 22 with respect to molecular interactions, the interaction length of molecular interactions is not necessarily correlated to molecular size. Hence, we propose a simple equation (that excludes V mol ) for the generalized surface and interfacial energy (surface and interfacial tension), σ 12 , to correlate with HSPs as follows:…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

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Hansen Solubility Parameters for Directly Dealing with Surface and Interfacial Phenomena

Murase

Nakamura

2023

Langmuir

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To integrate surface and interfacial properties and phenomena into the Hansen solubility parameter (HSP) framework, we propose an equation for estimating both surface tension/energy for liquids and solids as well as interfacial tension/energy. The contact angles of probe liquids on various polymers estimated using the proposed equation based on bulk HSPs (derived from bulk properties such as solubility or swelling, and not on surface properties) are compared with those measured using the sessile drop method. It is found that their correlations are sufficient for predicting wettability in practical use. All the respective tension and energy correlations are reasonably good, confirming the predictive power of the proposed equation for all values of liquid surface tension, solid surface energy, and interfacial tension. The unification of surface and interfacial properties and phenomena with HSPs (derived from bulk properties) enables us to estimate the surface properties from bulk properties and vice versa. The huge database of HSPs is now applicable to not only bulk phenomena but also surface and interfacial phenomena. Furthermore, complex processes or systems composed of multiple constituents and phases can be understood and designed using the modified HSP framework.

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Section: ■ Experimental Sectionmentioning

confidence: 99%

Section: ■ Experimental Sectionmentioning

confidence: 99%

Hansen Solubility Parameters for Directly Dealing with Surface and Interfacial Phenomena

Murase

Nakamura

2023

Langmuir

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“…The values for V m , δ (δ D , δ P , and δ H ), and experimental γ are taken from Ref. [16] and those for A obtained via the Lifshitz theory from Refs. [3,4].…”

Section: Resultsmentioning

confidence: 99%

“…Several empirical relationships between the Hansen solubility parameters δ D , δ P , and δ H and the surface tension γ of non-polar and polar substances have been proposed [10,[14][15][16][17]. We use the following latest formula derived by Abbot [10]:…”

Section: Hansen Solubility Parameter and Surface Tensionmentioning

confidence: 99%

A New Method for Calculating the Hamaker Constant Based on the Hansen Solubility Parameters for Non-Polar Liquids

Ohshima,

Takeda

2024

Colloids and Interfaces

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A simple relationship between the Hamaker constant and the Hansen solubility parameters for non-polar liquids is derived by combining a Hamaker constant/surface tension relationship derived by Israelachvili and a Hansen solubility parameters/surface tension relationship derived by Abbott. With this relationship, one can easily estimate the Hamaker constant of non-polar liquids on the basis of the database of the Hansen solubility parameters. This is an entirely new method for calculating the Hamaker constant without recourse to data on the frequency-dependent dielectric permittivity of those substances (which are required for the rigorous Lifshitz theory) and laborious numerical calculations.

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“…The rigidification of the PCL hindrances this phenomenon. n-hexadecane is highly soluble in chloroform than in ethyl acetate, and therefore, has a better compatibility [48,49]. Thus, the use of the chloroform working solution induces a higher loss in n-hexadecane during its evaporation.…”

Section: Phase Change Properties Of Electro-sprayed Mpcmmentioning

confidence: 99%

Preparation of n-Alkane/Polycaprolactone Phase-Change Microcapsules via Single Nozzle Electro-Spraying: Characterization on Their Formation, Structures and Properties

2020

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The phase change microcapsule (mPCM) is one of the primary candidates in the fields of energy storage and thermal regulation. In this study, electro-spraying, as a green, high-efficiency electrohydrodynamic atomization technology, is applied to the microencapsulation of two phase change materials (PCM) (n-hexadecane and n-eicosane) with three loading contents (30%, 50%, and 70% by weight) in a polycaprolactone matrix. Ethyl acetate (EA) and chloroform (Chl) were chosen as solvents to prepare the working solutions. The objective of this study is to clarify the microencapsulation process during electro-spraying and to optimize the structure and properties of the electro-sprayed mPCM. The structures, morphologies, and thermal properties of the mPCM were characterized by optical microscopy (OM), scanning electron microscopy (SEM), differential scanning calorimeter (DSC), thermogravimetric analysis (TGA), and fourier transform infrared spectroscopy (FT-IR). Electro-sprayed spherical and non-porous mPCM have been successfully prepared. The mean diameter and the particle size distribution depend mainly on the choice of the n-alkane, as well as the solvent used to prepare the working solutions. Meanwhile, the structure formation of electro-sprayed mPCM and the loading content of PCM were mainly influenced by the evaporation of the solvent and the phase separation between PCM and poly(caprolactone) (PCL) matrix. During the shell formation or PCL solidification, the control of the PCM leaching out of the matrix allows improving the loading content. Finally, based on a high latent heat and simple formation process, the electro-spraying route of PCM is a green, non-toxic, and high-efficiency direction for energy storage and heat regulation.

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A Relationship Between the Heat of Vaporization, Surface Tension, and the Solubility Parameters, Which Includes the Ratio of the Coordination Numbers, Based on Stefan's Rule

Cited by 8 publications

References 33 publications

Hansen Solubility Parameters for Directly Dealing with Surface and Interfacial Phenomena

Hansen Solubility Parameters for Directly Dealing with Surface and Interfacial Phenomena

A New Method for Calculating the Hamaker Constant Based on the Hansen Solubility Parameters for Non-Polar Liquids

Preparation of n-Alkane/Polycaprolactone Phase-Change Microcapsules via Single Nozzle Electro-Spraying: Characterization on Their Formation, Structures and Properties

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