Synthesis and characterization of physicochemical properties of new ether-functionalized amino acid ionic liquids

A New Compartmentalized Scale (PN) for Measuring Polarity Applied to Novel Ether-Functionalized Amino Acid Ionic Liquids

“…Furthermore, the contribution of the induced dipole moment was neglected. Therefore, δ μ was improved as follows and designated as P [ 45 ]: where δ n is the solubility parameter from the contribution of the induced dipole moment. Comparison of Δ g l H 0 mμ and Δ g l H 0 mn shows that (1− x )R T / V and x R T / V can be omitted and Equation (18) can be expressed as …”

Using Thermogravimetry Analysis Technology To Appraise the Vaporization Enthalpy of 1-(2-Alkoxyethyl)-3-methylimidazolium + [Anion] Ionic Liquids

“… a Δ H vap ′ : vaporization enthalpy at T = 298.15 K; Δ H vap : vaporization enthalpy at the average temperature; T av : average temperature; M : molar mass; ρ: density; γ: surface tension; V m : molar volume; α p : thermal expansion coefficient; κ T : isothermal compressibility; W : sound velocity; : heat capacity of liquid state; : the difference in heat capacity of the gaseous and liquid state of the IL at constant pressure. b Ref . c Ref . Standard uncertainties are u ( T ) = 0.02 K, u ( p ) = 0.001 Mpa.…”

“…The value of can be calculated with the use of the method proposed by Verevkin et al , and the formula is as follows where κ T /Pa –1 , α p /K –1 , and V m /(m 3 mol –1 ) are isothermal compressibility, thermal expansion coefficient, and molar volume, respectively. α p and V m are related to the density of IL. , κ T is calculated from the following equation where ρ/(kg m –3 ), W /(m s –1 ), M /(kg mol –1 ), and /(J K –1 mol –1 ) are density, sound velocity, molar mass, and heat capacity of the liquid state under ambient pressure, respectively. W is calculated from the following equation where γ/(J cm –2 ) is the surface tension, which can be obtained from our previous work. , According to eqs –, the values of for three substances can be calculated and related data have been listed in Table .…”

“…α p and V m are related to the density of IL. , κ T is calculated from the following equation where ρ/(kg m –3 ), W /(m s –1 ), M /(kg mol –1 ), and /(J K –1 mol –1 ) are density, sound velocity, molar mass, and heat capacity of the liquid state under ambient pressure, respectively. W is calculated from the following equation where γ/(J cm –2 ) is the surface tension, which can be obtained from our previous work. , According to eqs –, the values of for three substances can be calculated and related data have been listed in Table . Then, according to eq , Δ H vap can be converted into Δ H vap ′ and these values have been listed in Table .…”

“…where γ/(J cm −2 ) is the surface tension, which can be obtained from our previous work. 25,26 According to eqs 4−6, the values of…”