Densities, Refractive Indices, Viscosities, and Spectroscopic Study of 1-Amino-2-propanol + 1-Butanol and + 2-Butanol Solutions at (288.15 to 333.15) K

Abstract

Densities, refractive indices, and viscosities of 1-amino-2-propanol (monoisopropanolamine (MIPA)) + 1-butanol and 1-amino-2-propanol + 2butanol solutions are reported over the entire range of mole fractions and the temperature range from (288.15 to 333.15) K. The Redlich−Kister relation was used for correlation of measured results of excess molar volumes, viscosities, and refractive indices as a function of temperature and composition. Partial molar volumes at infinite dilution were determined from apparent molar volumes. Negative values for excess molar volumes, refractive indices, and viscosity deviations are observed over the entire composition range. The viscosities of 1amino-2-propanol with 1-butanol and 1-amino-2-propanol with 2-butanol are well represented by an Arrhenius equation. Activation energies for viscous flows are determined by linearization of the Arrhenius equation, providing a clear explanation of the influence on hydrogen bonding. In order to confirm molecular interactions between compounds obtained by analysis of infinite dilution of solute, a FT-IR spectroscopy study was performed at T = 298.15 K. Interactional and structural effects were investigated through calculations of excess Gibbs free energy of activation of viscous flow.

Hydrogen bond interactions in the blends of 1,4-dioxane with some 1, 2- disubstituted ethanes at T=(298.15, 308.15 and 318.15) K

“…Among the selected liquids DO is a non-polar, aprotic, nonhydrogen bonded cyclic diether and finds numerous applications in industrial processes as a solvent for saturated and unsaturated hydrocarbons [14]. The other three solvents also have industrial importance and consumer applications, e.g., EDA is an important raw material for the production of polymers, pharmaceuticals, pesticides, herbicides and dye fixing agent, etc; DCE is a s-acceptor and is used as a solvent, degreaser, etc [13]; MEA is used in the purification of petroleum, as a solvent in dry cleaning, as a CO 2 adsorbent and as an ingredient in paints and pharmaceuticals [15]. Thus the pure liquid components for the present study were chosen based on their varied applications.…”

Volumetric and Viscometric Properties of Alcohol Amines + Ethanol Binary Mixtures

“…It could also be seen from Figure 2 that the minimum values of V E for four alcohol amines appear at about x 1 = 0.4−0.5, which is close to the literature values for other alcohol amine + alcohol solutions. 13,14,19 The minimum value of the excess molar volume for 3-AP + ethanol solutions is smaller than that of MIPA + ethanol solutions, which may be due to that the hydroxyl group of MIPA hinders the free rotation of the carbon chain. For AEEA and DETA solutions, the hydroxyl group of the AEEA molecule is substituted by the amino group to form the DETA molecule; thus, the stronger hydrogen bond (HN•••HO) for DETA solution results in a less V E .…”

“…Furthermore, a similar trend is also found in the viscosities for binary mixtures MIPA + ethanol, AEEA + ethanol, and 3-AP + ethanol, which also is consistent with the literature. 13,18,19 However, the viscosities of DETA + ethanol solutions increase rapidly before x 1 = 0.8 and then become gradually flat after x 1 = 0.8. The viscosities of DETA + ethanol solutions are not significantly affected by the concentration of alcohol amine after x 1 = 0.8, which is in accordance with the literature.…”

“…The small ethanol molecules could pack well into the large alcohol amine molecules, leading to the volume contraction and negative V E . 13 The interaction between molecules and packing effect would gradually weakens with the increase of temperature, 31 leading to the less negative impact on the mixture volume, which results in the increase of V E . It could also be seen from Figure 2 that the minimum values of V E for four alcohol amines appear at about x 1 = 0.4−0.5, which is close to the literature values for other alcohol amine + alcohol solutions.…”

Theoretical and experimental study of physicochemical behavior of binary mixtures: SAFT and PC-SAFT models

“…In Table 1, values of the density and the viscosity of the pure materials are presented along with the values reported in the scientific literature. [4][5][6][7][8][9] The difference between experimental density and viscosity, and reported values in literature could be due to the type and amount of impurities, variety in the sources of materials (such as and Merck, Sigma, Fluka and…) and the differences in measurement techniques.…”