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July 14, 2026Scientific ReportsOpen Access

Viscosity modeling of propyl butanoate and 2-alkanol mixtures using modified Cohen-Turnbull and UNIFAC-VISCO approaches

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Authors

MAMohammad AlmasiANAdel Noubigh

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Overview

Randomized trial evaluates viscosity of ester-alcohol mixtures, suggesting improved modeling approaches.

Key Points

  • The aim is to model the viscosity of propyl butanoate and 2-alkanol mixtures using two modified approaches.
  • Measured densities and dynamic viscosities of binary mixtures at temperatures from 293.15 K to 323.15 K.
  • Developed and evaluated both the Modified Extended Cohen-Turnbull Model (M-ECTM) and Excess Free Volume Corrected UNIFAC (EFVC-UNIFAC) model.
  • Applied statistical analysis to determine model accuracy using metrics like global Average Absolute Deviation (AARD).
  • M-ECTM achieved the highest overall accuracy with a global AARD of 2.9% and MaxAD of 5.8%.
  • EFVC-UNIFAC achieved a global AARD of 3.1% and effectively eliminated systematic bias.
  • M-ECTM showed marginally better performance for longer-chain alcohols compared to EFVC-UNIFAC.

Cite This Study

Almasi et al. (2026) studied this question.

synapsesocial.com/papers/6a55d18e5aafca87247f888chttps://doi.org/10.1038/s41598-026-61777-z
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