Dynamic viscosity, density and surface tension of 1,3-propanediol (1)+1,2-propanediamine (2) binary system at T = (293.15 to 318.15) K and atmosphere pressure

Dynamic viscosity (v), density (rho), and surface tension (gamma) of the 1,3-propanediol (1,3-PDO) (1) + 1,2-propanediamine (1,2-PDA) (2) binary system with different ratios were studied at the temperature range of 293.15 to 318.15 K and atmospheric pressure. After that, the corresponding viscosity (eta) values were calculated from the experimental v and rho values. From these basic data, viscosity deviation (Delta eta), surface tension deviation (Delta gamma), excess molar volume (V-m(E)), apparent molar volume (V-phi,V-1 and V-phi,V-2), partial molar volume ((V-1) over bar and (V-1) over bar(V-2) over bar), and isostatic thermal expansion coefficient (alpha(p)) were calculated. The V-m(E), Delta eta, and Delta gamma values were used to assess the standard deviations (sigma) by using the Redlich-Kister (R-K) equation. In addition, combined with FTIR, UV-Vis, FLS, and H-1 NMR technologies, the interaction analysis between 1,3-PDO and 1,2-PDA concluded that the intermolecular hydrogen bonding in the system existed as the possible form of -O-H center dot center dot center dot N-. (C) 2019 Published by Elsevier B.V.