Excess properties, spectra, and computational chemistry for binary mixtures of 1,2-propanediol + 1,3-Diaminopropane

• Published in: Journal of molecular liquids 2020-04, Vol.304, p.112674, Article 112674
• Main Authors: Yang, Cheng, Zhao, Long, Zhang, Shuai, Jia, Xiaoqian, Zhang, Jianbin
• Format: Article
• Language: English
• Subjects: 1,2-Propanediol; 1,3-Diaminopropane; Density; Hydrogen bond; Surface tension; Viscosity
• ISSN: 0167-7322; 1873-3166
• DOI: 10.1016/j.molliq.2020.112674

Liquid density (ρ), viscosity (η) and surface tension (γ) of a binary system of 1,2-propanediol (PPD) + 1,3-Diaminopropane (PDA) with different composition were systemically measured at six temperatures from 293.15 K to 318.15 K. Based on these obtained values, their excess properties, apparent molar volumes (Vφ,1 and Vφ,2) and partial molar volumes (V_1 and V¯2) were calculated. The excess properties were fitted with Redlich-Kister equation. Additionally, the Grunberg-Nissan and three-body McAllister semi-empirical models were used to fit the viscosity values. Furthermore, UV, FTIR and 1H NMR spectra and computational chemistry confirmed that there was hydrogen bonding between PDA and PPD in the binary system as ⋯HOCH2(CH3)CH2O-H⋯N(H2)(CH2)3N(H2)⋯. •Densities and excess volumes for the binary system of PDA-PPD•Viscosities and viscosity deviation for the binary system of PDA-PPD•Surface tension and deviation for the binary system of PDA-PPD•Intermolecular hydrogen bonding studied by spectra and computational chemistry