Density and Viscosity of Propylene Carbonate + 2-Methoxyethanol at 298.15, 308.15, and 318.15 K

Abstract

Density and viscosity have been measured over the entire composition range for the binary mixtures of propylene carbonate and 2-methoxyethanol at 298.15, 308.15, and 318.15 K. From the experimental results, the excess molar volume (V^) and deviation of viscosity based on the mole fraction average ( ) have been derived. Kinematic as well as relative viscosity data have also been analyzed by two different methods in terms of interaction parameters. Results have been explained on the basis of molecular interactions and geometric effects of the components in the mixtures.

Excess Molar Volumes of Linear and Cyclic Ethers + Chloroethenes at 298.15 K

“…The purities of the final samples were checked by measuring their densities with a double-armed pycnometer , and the relative error in densities at (298.15 ( 0.01) K is estimated to be e3 × 10 -4 g‚cm -3 . The densities of the purified samples of ethylene glycol monomethyl ether, diethylene glycol dimethyl ether, and 1,4-dioxane at 298.15 K were (0.9602, 0.9390, and 1.0278) g‚cm -3 , in good agreement with the available literature data (Riddick et al, 1986;Davis et al, 1990;Muhuri and Hazra, 1995;Sakurai, 1992;Francesconi and Comelli, 1995;Suri and Naorem, 1987;Defhlefsen and Hvidt, 1985;Skranc et al, 1995). The purities of these solvents were further ascertained by the chromatographic method, confirming the absence of other significant organic components.…”

Excess Molar Volumes, Viscosities, and Refractive Indices of Triethylene Glycol Dimethyl Ether with Dimethyl Carbonate, Diethyl Carbonate, and Propylene Carbonate at 298.15 K

“…It is important to note that a considerable amount of volume contraction is observed for the triglyme with propylene carbonate mixtures. This contrasts with the behavior of the H m E and V m E for the esters of carbonic acid either with higher alkanols, alkoxyethanol, or alkyl acetate (Francesconi and Comelli, 1997a;Muhuri and Hazra, 1995; but consistent with that of the V m E for the dialkyl carbonates with branched ether (Francesconi and Comelli, 1997b).…”

Bromoalkyl ATRP initiator activation by inorganic salts: experiments and computations

“…In propylene carbonate, which has a much higher permittivity (ε = 64.4), the alkali halide Please do not adjust margins Please do not adjust margins solubility varies non-monotonically as Li >> Cs > K > Rb > Na for the chloride series and as Li >> Rb ~ Cs > Na ~ K for the bromide series. 49 In addition to the solubility effect, the cation nature also appears to influence the activation process, as suggested by the recovered polymer properties (Mn and Đ). Whereas the PMMAs obtained with the bromide activators (entries 9-16) have approximately the same dispersity and Mn,GPC/Mn,th ratios (with the exception of nBu4NBr for which these parameters are significantly higher), those obtained for the chloride series (entries 2-8) show more disparate properties with Đ values from 1.60 (Li) to 3.73 (K) and Mn,GPC/Mn,th from 3.8 (Na) to 416 (Na(CE)Cl).…”