Synthesis of citric acid monohydrate-choline chloride based deep eutectic solvents (DES) and characterization of their physicochemical properties
The objective of the study was to synthesize deep eutectic solvents (DES) using choline chloride and citric acid monohydrate at different molar ratios (i.e. DES 3:1, 2:1, 1:1, 1:2 and 1:3) followed by physicochemical characterization. The DES produced were clear and homogenized liquids under a micro...
| 发表在: | Journal of Molecular Liquids |
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| 主要作者: | |
| 格式: | 文件 |
| 语言: | English |
| 出版: |
Elsevier B.V.
2019
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| 在线阅读: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85066506600&doi=10.1016%2fj.molliq.2019.111081&partnerID=40&md5=2bf3e2256d4409c46a3a034e2bdaf13c |
| id |
Shafie M.H.; Yusof R.; Gan C.-Y. |
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| spelling |
Shafie M.H.; Yusof R.; Gan C.-Y. 2-s2.0-85066506600 Synthesis of citric acid monohydrate-choline chloride based deep eutectic solvents (DES) and characterization of their physicochemical properties 2019 Journal of Molecular Liquids 288 10.1016/j.molliq.2019.111081 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85066506600&doi=10.1016%2fj.molliq.2019.111081&partnerID=40&md5=2bf3e2256d4409c46a3a034e2bdaf13c The objective of the study was to synthesize deep eutectic solvents (DES) using choline chloride and citric acid monohydrate at different molar ratios (i.e. DES 3:1, 2:1, 1:1, 1:2 and 1:3) followed by physicochemical characterization. The DES produced were clear and homogenized liquids under a microscopic observation, and DES 1:1 was found to meet the eutectic point with the lowest melting temperature. Fourier-transform infrared spectroscopy (FTIR) analysis showed the hydrogen bond interaction between the components in DES where the wavenumbers of functional groups were shifted. Results also showed that when the molar ratio of citric acid monohydrate increased in DES, higher values of viscosity, surface tension and density were observed. It was also found that the DES produced were classified as hydrophilic DES because of their solubility in water, highly polar and most semi polar solvents. In summary, the DES synthesized was suggested to be used as a medium for the extraction of hydrophilic components from plant or animal materials. © 2019 Elsevier B.V. Elsevier B.V. 1677322 English Article |
| author |
2-s2.0-85066506600 |
| spellingShingle |
2-s2.0-85066506600 Synthesis of citric acid monohydrate-choline chloride based deep eutectic solvents (DES) and characterization of their physicochemical properties |
| author_facet |
2-s2.0-85066506600 |
| author_sort |
2-s2.0-85066506600 |
| title |
Synthesis of citric acid monohydrate-choline chloride based deep eutectic solvents (DES) and characterization of their physicochemical properties |
| title_short |
Synthesis of citric acid monohydrate-choline chloride based deep eutectic solvents (DES) and characterization of their physicochemical properties |
| title_full |
Synthesis of citric acid monohydrate-choline chloride based deep eutectic solvents (DES) and characterization of their physicochemical properties |
| title_fullStr |
Synthesis of citric acid monohydrate-choline chloride based deep eutectic solvents (DES) and characterization of their physicochemical properties |
| title_full_unstemmed |
Synthesis of citric acid monohydrate-choline chloride based deep eutectic solvents (DES) and characterization of their physicochemical properties |
| title_sort |
Synthesis of citric acid monohydrate-choline chloride based deep eutectic solvents (DES) and characterization of their physicochemical properties |
| publishDate |
2019 |
| container_title |
Journal of Molecular Liquids |
| container_volume |
288 |
| container_issue |
|
| doi_str_mv |
10.1016/j.molliq.2019.111081 |
| url |
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85066506600&doi=10.1016%2fj.molliq.2019.111081&partnerID=40&md5=2bf3e2256d4409c46a3a034e2bdaf13c |
| description |
The objective of the study was to synthesize deep eutectic solvents (DES) using choline chloride and citric acid monohydrate at different molar ratios (i.e. DES 3:1, 2:1, 1:1, 1:2 and 1:3) followed by physicochemical characterization. The DES produced were clear and homogenized liquids under a microscopic observation, and DES 1:1 was found to meet the eutectic point with the lowest melting temperature. Fourier-transform infrared spectroscopy (FTIR) analysis showed the hydrogen bond interaction between the components in DES where the wavenumbers of functional groups were shifted. Results also showed that when the molar ratio of citric acid monohydrate increased in DES, higher values of viscosity, surface tension and density were observed. It was also found that the DES produced were classified as hydrophilic DES because of their solubility in water, highly polar and most semi polar solvents. In summary, the DES synthesized was suggested to be used as a medium for the extraction of hydrophilic components from plant or animal materials. © 2019 Elsevier B.V. |
| publisher |
Elsevier B.V. |
| issn |
1677322 |
| language |
English |
| format |
Article |
| accesstype |
|
| record_format |
scopus |
| collection |
Scopus |
| _version_ |
1828987875622912000 |