Methods are examined for estimating the Hildebrand solubility parameter of a mixture of organic solvents using the characteristics of their structural elements. A procedure is proposed for calculating the solubility parameter for mixtures of solvents differing in composition and structure depending on the ratio of their components. These results enable us to predict the optimal solvent mixture composition for polymers with a known Hildebrand solubility parameter. The proposed method permits us to estimate the solubility of complex mixtures of hydrocarbons of petroleum origin such as the tar obtained as the vacuum residue of oil distillation when it is used as a polymer solvent. 1H NMR analysis results were used to determine the structural elements of a tar and calculate its Hildebrand solubility parameter.
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Acknowledgements
This study was carried out at the Institute of Petrochemical Synthesis of the Russian Academy of Sciences in the framework of a grant of the Russian Science Fund (Project No. 17‑73‑30046).
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Translated from Khimiya i Tekhnologiya Topliv i Masel. No. 2. pp. 32–37 March– April. 2023.
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Gyul’maliev, A.M., Batov, A.E., Zekel’, L.A. et al. Estimation of the Hildebrand Solubility Parameter of a Mixture of Petroleum‑Derived Solvents Using Their Structural Elements. Chem Technol Fuels Oils 59, 261–268 (2023). https://doi.org/10.1007/s10553-023-01525-5
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DOI: https://doi.org/10.1007/s10553-023-01525-5