Ionic liquids, the mixture of ionic liquids and their co-solvent with N, N-dimethylformamide as solvents for cellulose using experimental and COSMO study
Efficacy of mixtures of ionic liquids (ILs): 1-butyl-3-methylimidazolium acetate ([BMIM][OAc]) and 1-butyl-3-methylimidazolium thiocyanate ([BMIM][SCN]) with 4:1 mol/mol ratio was investigated to dissolve cellulose and compared with parent ILs. Attempt to reduce the mass transport limitations, visco...
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| Format: | Article |
| Language: | English |
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Elsevier
2022-09-01
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| Series: | Results in Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2590123022001542 |
| _version_ | 1818479820771688448 |
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| author | Ntebogeng Mqoni Sangeeta Singh Indra Bahadur Hamed Hashemi Deresh Ramjugernath |
| author_facet | Ntebogeng Mqoni Sangeeta Singh Indra Bahadur Hamed Hashemi Deresh Ramjugernath |
| author_sort | Ntebogeng Mqoni |
| collection | DOAJ |
| description | Efficacy of mixtures of ionic liquids (ILs): 1-butyl-3-methylimidazolium acetate ([BMIM][OAc]) and 1-butyl-3-methylimidazolium thiocyanate ([BMIM][SCN]) with 4:1 mol/mol ratio was investigated to dissolve cellulose and compared with parent ILs. Attempt to reduce the mass transport limitations, viscosity was reduced by adding N, N-dimethylformamide (DMF) as a co-solvent in each system and found that ([BMIM][OAc] + DMF) mixture proved that the addition of a co-solvent enhances cellulose dissolution to 22.3 g per 100 g of solvent which is more than double in [BMIM][OAc] IL. The COSMO analysis study incorporated density functional theory (DFT) calculations which confirmed the experimental results obtained in this study. In addition to the above, a study was also conducted from a thermophysical perspective to confirm the qualitative dissolution. Distilled water was used to regenerate cellulose from the mixtures and characterized using thermogravimetric analysis (TGA), X-ray diffraction (p-XRD), scanning electron microscopy (SEM), and Fourier-transform infrared spectroscopy (FTIR) to confirm the structure identification. |
| first_indexed | 2024-12-10T11:15:34Z |
| format | Article |
| id | doaj.art-2f9894bb7ba14ad7b85d32bab1890224 |
| institution | Directory Open Access Journal |
| issn | 2590-1230 |
| language | English |
| last_indexed | 2024-12-10T11:15:34Z |
| publishDate | 2022-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Engineering |
| spelling | doaj.art-2f9894bb7ba14ad7b85d32bab18902242022-12-22T01:51:11ZengElsevierResults in Engineering2590-12302022-09-0115100484Ionic liquids, the mixture of ionic liquids and their co-solvent with N, N-dimethylformamide as solvents for cellulose using experimental and COSMO studyNtebogeng Mqoni0Sangeeta Singh1Indra Bahadur2Hamed Hashemi3Deresh Ramjugernath4Department of Chemistry, Faculty of Natural and Agricultural Sciences, North-West University (Mafikeng Campus), Private Bag X2046, Mmabatho, 2735, South AfricaDepartment of Chemistry, Faculty of Natural and Agricultural Sciences, North-West University (Mafikeng Campus), Private Bag X2046, Mmabatho, 2735, South AfricaDepartment of Chemistry, Faculty of Natural and Agricultural Sciences, North-West University (Mafikeng Campus), Private Bag X2046, Mmabatho, 2735, South Africa; Corresponding author.Department of Chemical and Metallurgical Engineering, University of the Witwatersrand, 1 Jorissen St, Johannesburg, 2000, South AfricaDepartment of Process Engineering, Faculty of Engineering, Banhoekweg, Stellenbosch University, 7600, South AfricaEfficacy of mixtures of ionic liquids (ILs): 1-butyl-3-methylimidazolium acetate ([BMIM][OAc]) and 1-butyl-3-methylimidazolium thiocyanate ([BMIM][SCN]) with 4:1 mol/mol ratio was investigated to dissolve cellulose and compared with parent ILs. Attempt to reduce the mass transport limitations, viscosity was reduced by adding N, N-dimethylformamide (DMF) as a co-solvent in each system and found that ([BMIM][OAc] + DMF) mixture proved that the addition of a co-solvent enhances cellulose dissolution to 22.3 g per 100 g of solvent which is more than double in [BMIM][OAc] IL. The COSMO analysis study incorporated density functional theory (DFT) calculations which confirmed the experimental results obtained in this study. In addition to the above, a study was also conducted from a thermophysical perspective to confirm the qualitative dissolution. Distilled water was used to regenerate cellulose from the mixtures and characterized using thermogravimetric analysis (TGA), X-ray diffraction (p-XRD), scanning electron microscopy (SEM), and Fourier-transform infrared spectroscopy (FTIR) to confirm the structure identification.http://www.sciencedirect.com/science/article/pii/S2590123022001542Cellulose dissolutionIonic liquidsKamlet-Taft modelCOSMO |
| spellingShingle | Ntebogeng Mqoni Sangeeta Singh Indra Bahadur Hamed Hashemi Deresh Ramjugernath Ionic liquids, the mixture of ionic liquids and their co-solvent with N, N-dimethylformamide as solvents for cellulose using experimental and COSMO study Results in Engineering Cellulose dissolution Ionic liquids Kamlet-Taft model COSMO |
| title | Ionic liquids, the mixture of ionic liquids and their co-solvent with N, N-dimethylformamide as solvents for cellulose using experimental and COSMO study |
| title_full | Ionic liquids, the mixture of ionic liquids and their co-solvent with N, N-dimethylformamide as solvents for cellulose using experimental and COSMO study |
| title_fullStr | Ionic liquids, the mixture of ionic liquids and their co-solvent with N, N-dimethylformamide as solvents for cellulose using experimental and COSMO study |
| title_full_unstemmed | Ionic liquids, the mixture of ionic liquids and their co-solvent with N, N-dimethylformamide as solvents for cellulose using experimental and COSMO study |
| title_short | Ionic liquids, the mixture of ionic liquids and their co-solvent with N, N-dimethylformamide as solvents for cellulose using experimental and COSMO study |
| title_sort | ionic liquids the mixture of ionic liquids and their co solvent with n n dimethylformamide as solvents for cellulose using experimental and cosmo study |
| topic | Cellulose dissolution Ionic liquids Kamlet-Taft model COSMO |
| url | http://www.sciencedirect.com/science/article/pii/S2590123022001542 |
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