The concept of associated solutions in historical development. Part 1. The 1884–1984 period

Apelblat, Alexander

doi:10.1016/j.molliq.2006.02.005

Cited by 17 publications

(9 citation statements)

References 381 publications

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“…Association models can be classified into three categories: chemical theories, lattice models and perturbation theories. Apelblat [2,3] presents a historical summary of the advancements made in association modeling from 1884 to 1984. Among the most noteworthy contributions is Dolezalek's [4] theory of representing a hydrogen bond as an equilibrium reaction governed by an equilibrium constant.…”

Section: Historical Perspectivementioning

confidence: 99%

Relation of Wertheim association constants to concentration-based equilibrium constants for mixtures with chain-forming components

Bala

Lira

2016

Fluid Phase Equilibria

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Several association modeling approaches have been developed to accurately describe the properties of polar solutions. Chemical theory and Wertheim's perturbation theory are among the most popular of these and they have been shown to yield similar functional forms for the contributions of association to Helmholtz energy and activity coefficients. In this paper, we study Flory polymerization theory through the work of Campbell and elucidate its correlation to Wertheim's theory. A simple key relationship between the concentration-based equilibrium constant and Wertheim's association constant is developed for systems in which all associating components have one acceptor and one donor site. Algebraic and numerical proofs are given for the equivalence of Flory's polymerization theory and Wertheim's perturbation theory for pure fluids and mixtures. Additionally, a new generalized activity expression is developed for Wertheim's theory.

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Section: Historical Perspectivementioning

confidence: 99%

Relation of Wertheim association constants to concentration-based equilibrium constants for mixtures with chain-forming components

Bala

Lira

2016

Fluid Phase Equilibria

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“…Typically, this analysis is used to demonstrate non-ideality in the study of liquid mixtures. Excess viscosity, ∆η, is defined in Equation (4).…”

Section: Dynamic Viscosity Of Binary Mixturesmentioning

confidence: 99%

“…Previous studies on associating liquids [4] have employed a variety of techniques to investigate, for example, hydrogen bonding [5], nanostructuring and self-assembly [6], and microheterogeneity [7,8]; of particular focus has been to understand the solvent properties of alcohols [9]. 1…”

Section: Introductionmentioning

confidence: 99%

Electrical Conductivity and Viscosity in Binary Organic Liquid Mixtures: Participation of Molecular Interactions and Nanodomains

Taylor

Zeng

2020

Colloids and Interfaces

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The present work aims to shed light on recent literature reports suggesting that ionic species are implicated in the electrical conductivity of 1-octanol and its mixtures with hydrocarbons. Other workers have questioned this interpretation, and herein, based on new experimentation and with reference to various literature studies, we consider that molecular interactions are more likely to be responsible. To investigate this, we have studied mixtures of 1-octanol and either silicone oil (SO) or n-dodecane as nonpolar components, using dielectric (in particular electrical conductivity) and viscometric measurements. With reference to the literature, the self-association of alcohols is known to create microheterogeneity in the neat liquids and in mixtures with nonpolar, low dielectric constant liquids, and it has previously been considered to be responsible for the particular solvent properties of alcohols. The present results suggest that the electrical conductivity of alkane/alcohol systems may have similar origins, with percolating pathways formed from octanol-rich nanodomains comprising polar regions containing hydrogen-bonded hydroxyl groups and nonpolar regions dominated by alkyl chains. The percolation threshold found for dodecane/octanol mixtures, in which interactions between the component molecules are found from viscosity measurements to be repulsive, agrees well with results from experimental and theoretical studies of disordered arrangements of packed spheres, and moreover, it is consistent with other published alkane/alcohol results. On the other hand, the situation is more complex for SO/octanol mixtures, in which interactions between the two components are attractive, based on viscosity data, and in which the phase separation of SO occurs at high octanol concentrations. Overall, we have concluded that electrical conductivity in octanol (and potentially all liquid alcohols) and its mixtures with nonpolar molecules, such as alkanes, is consistent with the presence of conducting networks comprising octanol-rich nanodomains formed by self-association, and not as a result of ionic conduction.

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“…It is well known that the dissolution of one substance in another is accompanied by the formation of molecular complexes arising due to the intermolecular interaction [19]. In the frame of the posed problem, we now consider a mixture of two molecular substances A and B in the liquid state.…”

Section: Model-based Approach To Decomposition Of Spectramentioning

confidence: 99%

Study of Complexation in Acetone-Chloroform Mixtures by Infrared Spectroscopy

Ilchenko

Kutsyk

Obukhovsky

2014

Journal of Atomic and Molecular Physics

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FTIR spectra of acetone-chloroform system with various component ratios were investigated within the spectral range 3950-4550 cm −1 . Methods of multivariate curve resolution were applied to decompose the FTIR spectra into specific components of different composition. A method of decomposition based on structural model of solution which contains acetone, chloroform, and complex acetone/chloroform (1 : 1) was proposed. Results of both approaches are in good agreement within the range of measuring error.

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The concept of associated solutions in historical development. Part 1. The 1884–1984 period

Cited by 17 publications

References 381 publications

Relation of Wertheim association constants to concentration-based equilibrium constants for mixtures with chain-forming components

Relation of Wertheim association constants to concentration-based equilibrium constants for mixtures with chain-forming components

Electrical Conductivity and Viscosity in Binary Organic Liquid Mixtures: Participation of Molecular Interactions and Nanodomains

Study of Complexation in Acetone-Chloroform Mixtures by Infrared Spectroscopy

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