Influence of the Molecular Weight of Polymer on the Poly Vinyl Pyrrolidone and Zinc Sulfate Phase Diagram of Aqueous Two-Phase Systems
The study obtained the Liquid – Liquid Equilibrium (LLE) for Aqueous Two-Phase Systems (ATPSs) containing poly (vinyl pyrrolidone) (PVP) (10000, 24000, and 40000) and zinc sulfate at 298.15 K. The phase area is expanded according to the increased molecular weight of the polymer. Density and refracti...
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| Format: | Article |
| Language: | English |
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Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR
2021-04-01
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| Series: | Iranian Journal of Chemistry & Chemical Engineering |
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| Online Access: | http://www.ijcce.ac.ir/article_37443_cd3094edeffab1a76344c3560e71bc52.pdf |
| _version_ | 1818779121047568384 |
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| author | Elnaz Sadat Hosseini Mohsen Pirdashti |
| author_facet | Elnaz Sadat Hosseini Mohsen Pirdashti |
| author_sort | Elnaz Sadat Hosseini |
| collection | DOAJ |
| description | The study obtained the Liquid – Liquid Equilibrium (LLE) for Aqueous Two-Phase Systems (ATPSs) containing poly (vinyl pyrrolidone) (PVP) (10000, 24000, and 40000) and zinc sulfate at 298.15 K. The phase area is expanded according to the increased molecular weight of the polymer. Density and refractive indices were employed as the physical properties for obtaining phase composition and end of tie-line evaluations. The effect of molecular weight is discussed in relation to binodal curve, Tie-Line Length (TLL), and Slope of Tie Line (STL) determinations. Following the increase in polymer molecular weight value, the TLL increased and STL slightly decreased. Accordingly, Pirdashti’s equation was used to correlate binodal curve evaluations of these systems. Furthermore, tie-line data points were correlated by Othmer-Tobias, Hand, and Bancroft equations. Finally, the study determined the Effective Excluded Volume (EEV) of salt into the PVP aqueous solution. |
| first_indexed | 2024-12-18T11:55:34Z |
| format | Article |
| id | doaj.art-5fc813548bec4a818eec8320b4816498 |
| institution | Directory Open Access Journal |
| issn | 1021-9986 1021-9986 |
| language | English |
| last_indexed | 2024-12-18T11:55:34Z |
| publishDate | 2021-04-01 |
| publisher | Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR |
| record_format | Article |
| series | Iranian Journal of Chemistry & Chemical Engineering |
| spelling | doaj.art-5fc813548bec4a818eec8320b48164982022-12-21T21:09:04ZengIranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECRIranian Journal of Chemistry & Chemical Engineering1021-99861021-99862021-04-0140262763710.30492/ijcce.2019.3744337443Influence of the Molecular Weight of Polymer on the Poly Vinyl Pyrrolidone and Zinc Sulfate Phase Diagram of Aqueous Two-Phase SystemsElnaz Sadat Hosseini0Mohsen Pirdashti1Chemical Engineering Department, Faculty of Engineering, Shomal University, Amol, I.R. IRANChemical Engineering Department, Faculty of Engineering, Shomal University, Amol, I.R. IRANThe study obtained the Liquid – Liquid Equilibrium (LLE) for Aqueous Two-Phase Systems (ATPSs) containing poly (vinyl pyrrolidone) (PVP) (10000, 24000, and 40000) and zinc sulfate at 298.15 K. The phase area is expanded according to the increased molecular weight of the polymer. Density and refractive indices were employed as the physical properties for obtaining phase composition and end of tie-line evaluations. The effect of molecular weight is discussed in relation to binodal curve, Tie-Line Length (TLL), and Slope of Tie Line (STL) determinations. Following the increase in polymer molecular weight value, the TLL increased and STL slightly decreased. Accordingly, Pirdashti’s equation was used to correlate binodal curve evaluations of these systems. Furthermore, tie-line data points were correlated by Othmer-Tobias, Hand, and Bancroft equations. Finally, the study determined the Effective Excluded Volume (EEV) of salt into the PVP aqueous solution.http://www.ijcce.ac.ir/article_37443_cd3094edeffab1a76344c3560e71bc52.pdfatpsphase diagramrefractive indexpoly (vinyl pyrrolidone)zinc sulfatedensity |
| spellingShingle | Elnaz Sadat Hosseini Mohsen Pirdashti Influence of the Molecular Weight of Polymer on the Poly Vinyl Pyrrolidone and Zinc Sulfate Phase Diagram of Aqueous Two-Phase Systems Iranian Journal of Chemistry & Chemical Engineering atps phase diagram refractive index poly (vinyl pyrrolidone) zinc sulfate density |
| title | Influence of the Molecular Weight of Polymer on the Poly Vinyl Pyrrolidone and Zinc Sulfate Phase Diagram of Aqueous Two-Phase Systems |
| title_full | Influence of the Molecular Weight of Polymer on the Poly Vinyl Pyrrolidone and Zinc Sulfate Phase Diagram of Aqueous Two-Phase Systems |
| title_fullStr | Influence of the Molecular Weight of Polymer on the Poly Vinyl Pyrrolidone and Zinc Sulfate Phase Diagram of Aqueous Two-Phase Systems |
| title_full_unstemmed | Influence of the Molecular Weight of Polymer on the Poly Vinyl Pyrrolidone and Zinc Sulfate Phase Diagram of Aqueous Two-Phase Systems |
| title_short | Influence of the Molecular Weight of Polymer on the Poly Vinyl Pyrrolidone and Zinc Sulfate Phase Diagram of Aqueous Two-Phase Systems |
| title_sort | influence of the molecular weight of polymer on the poly vinyl pyrrolidone and zinc sulfate phase diagram of aqueous two phase systems |
| topic | atps phase diagram refractive index poly (vinyl pyrrolidone) zinc sulfate density |
| url | http://www.ijcce.ac.ir/article_37443_cd3094edeffab1a76344c3560e71bc52.pdf |
| work_keys_str_mv | AT elnazsadathosseini influenceofthemolecularweightofpolymeronthepolyvinylpyrrolidoneandzincsulfatephasediagramofaqueoustwophasesystems AT mohsenpirdashti influenceofthemolecularweightofpolymeronthepolyvinylpyrrolidoneandzincsulfatephasediagramofaqueoustwophasesystems |