Evaluation of Excess Free Volume and Internal Pressure in Binary Mixtures of Methyl Methacrylate(MMA) with Alcohols

Vadamalar, R.; Prabaharan, M.; Balakrishnan, R.; Arumugam, V.

doi:10.1155/2009/505981

Cited by 8 publications

(5 citation statements)

References 6 publications

(6 reference statements)

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“…In this study, the viscosity of C 8 mimPF 6 is 1052 mPa s at 20 C, 37 and that of MMA is 0.5311 mPa s at 30 C. 38 The viscosity of the water phase is 0.839 mPa s at 40 C. The effect of C 8 mimPF 6 on the viscosity of oil phase cannot be ignored. Fig.…”

Section: Effect Of Rtils Concentration On the Initial Droplet Size Anmentioning

confidence: 76%

Study of miniemulsion formulation containing 1-octyl-3-methylimidazolium hexafluorophosphate for its application in low-emitting coating products

Kong

Choy

et al. 2015

Soft Matter

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Room temperature ionic liquids (RTILs) are non-volatile organic salts, and few of them with low melting point may replace the conventional coalescing agents in waterborne coatings, thus preventing volatile organic compounds (VOCs) emission, caused by coalescing agents. The formation of waterborne coating containing RTILs can be achieved by the encapsulation of RTILs inside latexes via miniemulsion polymerization. Achieving a stable miniemulsion is a crucial step for further polymerization. In this study, 1-octyl-3-methylimidazolium hexafluorophosphate (C8mimPF6) was chosen, and various factors which might affect droplet size and its stability, including surfactant type, surfactant concentration, and C8mimPF6 concentration, were investigated. It was found that the presence of a small amount of C8mimPF6 coupled with the surfactant would offer marked effects on the droplet size reduction and droplet stability. Such effect may reach its maximum from 1 to 5 wt% C8mimPF6. Above the critical concentration, adding more C8mimPF6 to the oil phase may cause a larger initial droplet size as well as weaken the droplet stability. Such observations were consistent with the zeta potential measurements for miniemulsions prepared under similar conditions.

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Section: Effect Of Rtils Concentration On the Initial Droplet Size Anmentioning

confidence: 76%

Study of miniemulsion formulation containing 1-octyl-3-methylimidazolium hexafluorophosphate for its application in low-emitting coating products

Kong

Choy

et al. 2015

Soft Matter

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show abstract

“…These may be divided arbitrarily into three types, namely chemical, physical and structural. [20][21][22] Vektarieneet al, 23 stated that the Br-Br bond length in dioxane di bromide is 0.231 nm, where as it is 0.228 nm in the Br2 molecule. Thus, the Br-Br bond in dioxane di bromide is a little elongated and the bromine molecule is slightly polarized.…”

Section: Resultsmentioning

confidence: 99%

Molecular Interactions and Thermophysical Properties of 1, 4 Dioxane with Bromo benzene, Ethyl benzene at various Temperatures via Nonlinear Model

R.¹

2021

TURCOMAT

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Viscosities and densities of 1,4 dioxane with hydrocarbon bromo benzene, ethyl benzene was measured over the entire mole fractions at temperatures ranging from 303.15, 308.15, and 313.15K. From these experimental results, excess molar volume VE and viscosity deviation ∆η was calculated. The VE and Δη exhibited positive and negative values, respectively, over the entire composition range in the order of 1,4 dioxane+ bromo benzene and < 1,4 dioxane +ethyl benzene systems. The outcomes indicated the weak interactions present in the mixtures. It exists mainly because of the number and position of methyl groups in these aromatic hydrocarbons. The molecular dynamics simulation studies for both the mixtures show no phase separation. The volume occupied by 1,4 dioxane + bromo benzene is lesser than 1,4 dioxane + ethyl benzene substantiating the experimental results of VE and Δη. Standard deviations from the Jouyban–Acree model between the fitting outcomes, and the calculated data are helpful deliberate mixing behavior of the binary mixtures. The molecular interactions existing between the components and comparison of liquid mixtures were also discussed.

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“…The measured data were used to study the molecular interactions in binary liquid mixtures. Vadamalar et al 35 also used acoustic and viscometric parameters to accurately calculate the internal pressure for binary mixtures of tert-butanol and isobutanol with methyl methacrylate. Sachdeva and Nanda 36 employed measured ultrasonic wave velocity and density measurements of normal paraffins to calculate the internal pressure.…”

Section: Methods For Internal Pressure Measurementsmentioning

confidence: 99%

Chapter 16. Internal Pressure and Internal Energy of Saturated and Compressed Phases

Abdulagatov¹,

Magee²,

Полихрониди³

et al. 2017

Enthalpy and Internal Energy

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Following a critical review of the field, a comprehensive analysis is provided of the internal pressure of fluids and fluid mixtures and its determination in a wide range of temperatures and pressures. Further, the physical meaning is discussed of the internal pressure along with its microscopic interpretation by means of calorimetric experiments. A new relation is explored between the internal pressure and the isochoric heat capacity jump along the coexistence curve near the critical point. Various methods (direct and indirect) of internal pressure determination are discussed. Relationships are studied between the internal pressure and key thermodynamic properties, namely expansion coefficient, isothermal compressibility, speed of sound, enthalpy increments, and viscosity. Loci of isothermal, isobaric, and isochoric internal pressure maxima and minima were examined in addition to the locus of zero internal pressure. Details were discussed of the new method of direct internal pressure determination by a calorimetric experiment that involves simultaneous measurement of the thermal pressure coefficient () V

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Evaluation of Excess Free Volume and Internal Pressure in Binary Mixtures of Methyl Methacrylate(MMA) with Alcohols

Cited by 8 publications

References 6 publications

Study of miniemulsion formulation containing 1-octyl-3-methylimidazolium hexafluorophosphate for its application in low-emitting coating products

Study of miniemulsion formulation containing 1-octyl-3-methylimidazolium hexafluorophosphate for its application in low-emitting coating products

Molecular Interactions and Thermophysical Properties of 1, 4 Dioxane with Bromo benzene, Ethyl benzene at various Temperatures via Nonlinear Model

Chapter 16. Internal Pressure and Internal Energy of Saturated and Compressed Phases

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