Thermodynamic characterization of binary mixtures of poly(propylene glycol) 425 with toluene and o-, m- and p-xylenes
Апстракт
Density rho, viscosity eta and refractive index n(D) have been experimentally measured for four binary mixtures of poly(propylene glycol) of average molecular weight 425 + toluene/o-xylene/m-xylene/p-xylene over the temperature range T = (293.15-333.15) K with temperature step 5 K and at atmospheric pressure. From the experimental data excess molar volumes V-E, deviations in refractive index Delta n(D), viscosity deviations Delta eta and excess Gibbs free energy of activation of viscous flow Delta G(*E) were calculated and fitted with Redlich-Kister polynomial in order to analyze non-ideal behavior of the studied mixtures. From Delta G(*) values excess entropy AS(*E) and excess enthalpy of activation of viscous flow Delta H-*E were also calculated. It was shown that specific weak, but numerous, attractive interactions and entropic effect, due to difference in size of the pure component molecules, are responsible for volumetric and viscosity behaviour of the studied systems. The viscosi...ties of the studied systems were predicted with the UNIFAC-VISCO and ASOG-VISCO models and correlated with the McAllister equation.
Кључне речи:
Density / Viscosity / Refractive index / Excess Gibbs free energy of activation of viscous flow / Viscosity modelingИзвор:
Journal of Chemical Thermodynamics, 2019, 131, 393-403Издавач:
- Academic Press Ltd- Elsevier Science Ltd, London
Финансирање / пројекти:
- Research Fund of Ministry of Science and Environmental Protection, Serbia
- Нови индустријски и еколошки аспекти примене хемијске термодинамике на унапређење хемијских процеса са вишефазним и вишекомпонентним системима (RS-MESTD-Basic Research (BR or ON)-172063)
Напомена:
- Peer-reviewed manuscript: http://technorep.tmf.bg.ac.rs/handle/123456789/5135
Повезане информације:
- Верзија документа
http://technorep.tmf.bg.ac.rs/handle/123456789/5135
DOI: 10.1016/j.jct.2018.11.020
ISSN: 0021-9614
WoS: 000454515300042
Scopus: 2-s2.0-85057376458
Институција/група
Tehnološko-metalurški fakultetTY - JOUR AU - Vuksanović, Jelena AU - Soldatović, Danijela AU - Radović, Ivona AU - Višak, Zoran P. AU - Kijevčanin, Mirjana PY - 2019 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4332 AB - Density rho, viscosity eta and refractive index n(D) have been experimentally measured for four binary mixtures of poly(propylene glycol) of average molecular weight 425 + toluene/o-xylene/m-xylene/p-xylene over the temperature range T = (293.15-333.15) K with temperature step 5 K and at atmospheric pressure. From the experimental data excess molar volumes V-E, deviations in refractive index Delta n(D), viscosity deviations Delta eta and excess Gibbs free energy of activation of viscous flow Delta G(*E) were calculated and fitted with Redlich-Kister polynomial in order to analyze non-ideal behavior of the studied mixtures. From Delta G(*) values excess entropy AS(*E) and excess enthalpy of activation of viscous flow Delta H-*E were also calculated. It was shown that specific weak, but numerous, attractive interactions and entropic effect, due to difference in size of the pure component molecules, are responsible for volumetric and viscosity behaviour of the studied systems. The viscosities of the studied systems were predicted with the UNIFAC-VISCO and ASOG-VISCO models and correlated with the McAllister equation. PB - Academic Press Ltd- Elsevier Science Ltd, London T2 - Journal of Chemical Thermodynamics T1 - Thermodynamic characterization of binary mixtures of poly(propylene glycol) 425 with toluene and o-, m- and p-xylenes EP - 403 SP - 393 VL - 131 DO - 10.1016/j.jct.2018.11.020 ER -
@article{ author = "Vuksanović, Jelena and Soldatović, Danijela and Radović, Ivona and Višak, Zoran P. and Kijevčanin, Mirjana", year = "2019", abstract = "Density rho, viscosity eta and refractive index n(D) have been experimentally measured for four binary mixtures of poly(propylene glycol) of average molecular weight 425 + toluene/o-xylene/m-xylene/p-xylene over the temperature range T = (293.15-333.15) K with temperature step 5 K and at atmospheric pressure. From the experimental data excess molar volumes V-E, deviations in refractive index Delta n(D), viscosity deviations Delta eta and excess Gibbs free energy of activation of viscous flow Delta G(*E) were calculated and fitted with Redlich-Kister polynomial in order to analyze non-ideal behavior of the studied mixtures. From Delta G(*) values excess entropy AS(*E) and excess enthalpy of activation of viscous flow Delta H-*E were also calculated. It was shown that specific weak, but numerous, attractive interactions and entropic effect, due to difference in size of the pure component molecules, are responsible for volumetric and viscosity behaviour of the studied systems. The viscosities of the studied systems were predicted with the UNIFAC-VISCO and ASOG-VISCO models and correlated with the McAllister equation.", publisher = "Academic Press Ltd- Elsevier Science Ltd, London", journal = "Journal of Chemical Thermodynamics", title = "Thermodynamic characterization of binary mixtures of poly(propylene glycol) 425 with toluene and o-, m- and p-xylenes", pages = "403-393", volume = "131", doi = "10.1016/j.jct.2018.11.020" }
Vuksanović, J., Soldatović, D., Radović, I., Višak, Z. P.,& Kijevčanin, M.. (2019). Thermodynamic characterization of binary mixtures of poly(propylene glycol) 425 with toluene and o-, m- and p-xylenes. in Journal of Chemical Thermodynamics Academic Press Ltd- Elsevier Science Ltd, London., 131, 393-403. https://doi.org/10.1016/j.jct.2018.11.020
Vuksanović J, Soldatović D, Radović I, Višak ZP, Kijevčanin M. Thermodynamic characterization of binary mixtures of poly(propylene glycol) 425 with toluene and o-, m- and p-xylenes. in Journal of Chemical Thermodynamics. 2019;131:393-403. doi:10.1016/j.jct.2018.11.020 .
Vuksanović, Jelena, Soldatović, Danijela, Radović, Ivona, Višak, Zoran P., Kijevčanin, Mirjana, "Thermodynamic characterization of binary mixtures of poly(propylene glycol) 425 with toluene and o-, m- and p-xylenes" in Journal of Chemical Thermodynamics, 131 (2019):393-403, https://doi.org/10.1016/j.jct.2018.11.020 . .