Aggregation and critical behavior of 2-butoxyethanol in water

Quirion, François; Magid, L. J.; Drifford, M.

doi:10.1021/la00091a040

Cited by 41 publications

(36 citation statements)

References 5 publications

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“…A progressive aggregation is more probable, but is hardly detected. Direct vizualisation by SANS, SAXS, or light scattering 30,31 has already been carried out but is difficult because aggregates are in general small and polydispersed. The easiest way to detect the onset of aggregation is to follow the evolution of some physico-chemical properties, such as surface tension, with increasing solvo-surfactant concentration.…”

Section: Surface Activity Of Short Chain Glycerol 1-monoethersmentioning

confidence: 99%

Short chain glycerol 1-monoethers—a new class of green solvo-surfactants

et al. 2006

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The synthesis of short eco-friendly amphiphilic compounds derived from glycerol was carried out. These compounds, called solvo-surfactants, are of great interest since they exhibit both properties of solvents, e.g. volatility, solubilization of organics, and surfactants, e.g. reduction of interfacial tensions, formation of emulsions and microemulsions. Their surface activity was studied, and binary phase diagrams with water were drawn. Their sensitivity to various electrolytes from Hofmeister's series was also investigated. Short chain glycerol 1-monoethers constitute a new class of green solvo-surfactants with excellent properties, that should be seriously considered for the replacement of reprotoxic glycol ethers. They have, moreover, the advantage of helping to solve the problem of an over-production of glycerol, which is a major side-product of the biocarburant industry.

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Section: Surface Activity Of Short Chain Glycerol 1-monoethersmentioning

confidence: 99%

Short chain glycerol 1-monoethers—a new class of green solvo-surfactants

et al. 2006

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“…Besides, many other studies were published so far, which examined aqueous 2BE systems using various kinds of techniques such as surface tensiometry 6) , calorimetry 7) , viscometry 8) , ultrasound relaxation 9) , dynamic light scattering 10,11) , Taylor dispersion measurement 12) , fluorescent spectroscopy 13) , molecular dynamics simulation 14) , X-ray scattering 15) , neutron scattering [16][17][18] , neutron spin echo 18) , and so on. In many studies listed above, most authors found maxima or inflection points in the measured physical quantities at certain 17 † Corresponding author.…”

Section: Introductionmentioning

confidence: 99%

“…c = 3.44 M (x 2BE = 0.1) and is followed by decreasing above the concentration, while the ε 1 meaning the contents of free water molecules in the system demonstrates an obvious decreasing trend. These observations reveal that the exchange process for hydrated water molecules by free water ones is not fully performed for lack of free water molecule contents above c = 3.44 M (x 2BE = 0.1).Some X-ray and neutron scattering studies have evaluated so-called correlation length (ζ) in aqueous 2BE solutions[15][16][17][18] assuming the Ornstein-Zernike equation. The values of ζ are ranged from several to several tens angstroms, reflecting the size of concentration fluctuation caused by the presence of intermolecular associations of 2BE molecules in aqueous solution.…”

mentioning

confidence: 99%

Molecular Association and Hydration Behavior of 2-<i>n</i>-Butoxyethanol in Aqueous Solution

Satokawa

Shikata

2019

J. Soc. Rheol., Jpn

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Broadband dielectric spectrum measurements up to 50 GHz have been conducted for aqueous solution of 2-n-butoxyethanol (2BE) over a wide concentration range to investigate the state of molecular association of 2BE in aqueous solution. All the obtained dielectric relaxation spectra can be well decomposed into multiple Debye-type relaxation functions. The number of necessary relaxation modes clearly depended on the concentration of 2BE and was reasonably correlated with the molecular association state change of 2BE in aqueous solution. The concentration dependence of hydration number per 2BE molecule slightly decreased above a critical concentration for molecular association formation like micelles due to intermolecular hydrogen bonds formation between 2BE molecules.

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“…The aim of this study is to use differential scanning calorimetry (DSC) to obtain information about the miscibility of dipropylene glycol propyl ether (C 3 P 2 or DPnP) in aqueous solution. The molecules of polyoxyalkylene glycol ethers undergo association in aqueous solutions, which can result in microimmiscibility of system [1,[11][12][13][14]. Both of this phenomenon and phase separation in the system, that is, the determination of the range (temperature/composition) of the occurrence of the system miscibility {DPnP + water}, constitute the object of these studies.…”

Section: Introductionmentioning

confidence: 99%

Phase Behavior and Heat Capacity of {DPnP + Water} Mixtures at the Temperature Range of 273.15–338.15 K

Tkaczyk

Piekarski

Góralski

2015

Journal of Chemistry

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The differential scanning calorimetry method (DSC) was used to examine the miscibility in the{dipropylene glycol propyl ether (DPnP) + water}system. Based on recorded curves of differential heat flow on temperature, HF=f(T), the range (composition, temperature) of the occurrence of miscibility gap, the values of lower critical solution temperature (LCST), and critical concentration were determined. On the basis of the experimentally determined specific heat capacity data the partial molar heat capacities (Cp,2) of DPnP in the mixtures with water were calculated. Analyzing changes in the course ofCp,2=f(x2)function, the boundary of transition from a homogeneous solution was determined, in which the monomers of amphiphile dominate, to the region, in which aggregates of the cluster type appear.

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Aggregation and critical behavior of 2-butoxyethanol in water

Cited by 41 publications

References 5 publications

Short chain glycerol 1-monoethers—a new class of green solvo-surfactants

Short chain glycerol 1-monoethers—a new class of green solvo-surfactants

Molecular Association and Hydration Behavior of 2-<i>n</i>-Butoxyethanol in Aqueous Solution

Phase Behavior and Heat Capacity of {DPnP + Water} Mixtures at the Temperature Range of 273.15–338.15 K

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