1
|
Aravena RI, Hallett JP. Protic ionic liquids based on fatty acids: a mixture of ionic and non-ionic molecules. J Mol Liq 2023. [DOI: 10.1016/j.molliq.2023.121241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
|
2
|
Blaga AC, Tucaliuc A, Kloetzer L. Applications of Ionic Liquids in Carboxylic Acids Separation. MEMBRANES 2022; 12:membranes12080771. [PMID: 36005686 PMCID: PMC9414664 DOI: 10.3390/membranes12080771] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 07/31/2022] [Accepted: 08/04/2022] [Indexed: 05/26/2023]
Abstract
Ionic liquids (ILs) are considered a green viable organic solvent substitute for use in the extraction and purification of biosynthetic products (derived from biomass-solid/liquid extraction, or obtained through fermentation-liquid/liquid extraction). In this review, we analyzed the ionic liquids (greener alternative for volatile organic media in chemical separation processes) as solvents for extraction (physical and reactive) and pertraction (extraction and transport through liquid membranes) in the downstream part of organic acids production, focusing on current advances and future trends of ILs in the fields of promoting environmentally friendly products separation.
Collapse
|
3
|
Methyltrioctylammonium Octadecanoate as Lubricant Additive to Different Base Oils. LUBRICANTS 2022. [DOI: 10.3390/lubricants10060128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
This study investigates the use of an ionic liquid obtained from fatty acids (FAIL) as an additive at 2 wt.% in two different base oils: a mineral oil (M1) and a polyol ester (E1). Physicochemical characterization of the base oil–FAIL blends confirmed the miscibility of the FAIL in the base oils. The addition of the FAIL hardly changed the density of the base oils and the viscosity slightly increased at lower temperatures. The tribological performance of the base oils and their blends with the FAIL was determined using three different tests: Stribeck curve determination and tribofilm formation tests, both under sliding/rolling motion, and reciprocating wear tests. The M1 + FAIL blend showed the lowest friction values under the mixed lubrication regime due to its higher viscosity, while the E1 + FAIL showed the lowest friction values under the elastohydrodynamic lubrication regime, which may well have been due to its higher polarity. Only the E1 + FAIL blend outperformed the antiwear behavior of the base oil, probably because it has better chemical affinity (higher polarity) for the metallic surface. SEM images showed that the predominant wear mechanism was adhesive-type with plastic deformation and XPS studies proved that the presence of increasing amounts of organic oxygen on the wear scar caused better antiwear performance when the E1 + FAIL blend was used.
Collapse
|
4
|
Linear alkyl-benzenesulfonate-based protic ionic liquids: physicochemical properties and tribological performance as lubricant additives to a non-polar base oil. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
5
|
de Paula FH, de Freitas FA, Nunes DG, Iglauer S, Gramatges AP, Nascimento RS, Lachter ER. Alkyl glyceryl ethers as water-based lubricant additives in mixtures with xanthan gum. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2021.127881] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
6
|
Su H, Zhao Q, Chen Y, Zhao Q, Jiang C, Lou W. Synthesis and investigation of phosphorus-free ionic liquids as multifunctional lubricating additives. RSC Adv 2022; 12:25134-25142. [PMID: 36199350 PMCID: PMC9443478 DOI: 10.1039/d2ra04006a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Accepted: 08/24/2022] [Indexed: 11/21/2022] Open
Abstract
Two phosphorus-free multifunctional protic ionic liquids were devolpoed for lubricating additives. The low corrosion, excellent tribological behavior and antioxidation property make them suitable as multifunctional additives in various lubricants.
Collapse
Affiliation(s)
- Huaigang Su
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
- Qingdao Center of Resource Chemistry and New Materials, Qingdao 266100, P. R. China
| | - Qin Zhao
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, P. R. China
| | - Yunlong Chen
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, P. R. China
- Qingdao Center of Resource Chemistry and New Materials, Qingdao 266100, P. R. China
| | - Qilong Zhao
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, P. R. China
- Qingdao Center of Resource Chemistry and New Materials, Qingdao 266100, P. R. China
| | - Cheng Jiang
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, P. R. China
- Qingdao Center of Resource Chemistry and New Materials, Qingdao 266100, P. R. China
| | - Wenjing Lou
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, P. R. China
- Qingdao Center of Resource Chemistry and New Materials, Qingdao 266100, P. R. China
| |
Collapse
|
7
|
Tantray AA, Rode NR, Shinde SS, Nandre V, Kodam KM, Terdale SS. Influence of the alkyl chain length on the physicochemical properties and microbial biocompatibility of phosphonium based fatty acid ionic liquids. CAN J CHEM 2022. [DOI: 10.1139/cjc-2021-0147] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Ionic liquids (ILs) have remarkable properties and applications in many areas of science. Phosphonium ILs have become important because of their unique chemical and thermal stabilities. The present work is focused on the synthesis, characterisation, physicochemical properties, and microbial toxicity assessment of phosphonium ILs bearing seven different fatty acid anions. The structures of the synthesised ILs were confirmed by 1H and 13C nuclear magnetic resonance (NMR) and FTIR spectroscopy. Physicochemical properties such as density and viscosity of pure ILs were measured at temperatures ranging from 298.15 to 313.15 K. The experimental density decreased, whereas the viscosity increased with an increasing number of carbon atoms in the anion. The derived properties were also found to be anion dependent. The thermal decomposition temperature was investigated by TGA. Subsequently, the toxicity profile of the ILs was determined for selected Gram positive and Gram negative bacteria and some species of fungi in terms of minimum inhibitory concentrations (MIC). The results show that the antimicrobial activities of the ILs are strongly related to the structures of the ILs, where an increase in toxicity was observed with increasing alkyl group chain length of the fatty acid anion.
Collapse
Affiliation(s)
- Aafaq A. Tantray
- Department of Chemistry, Savitribai Phule Pune University, Ganeshkhind, Pune, Maharashtra 411 007, India
- Department of Chemistry, Savitribai Phule Pune University, Ganeshkhind, Pune, Maharashtra 411 007, India
| | - Nitin R. Rode
- Department of Chemistry, Savitribai Phule Pune University, Ganeshkhind, Pune, Maharashtra 411 007, India
- Department of Chemistry, Savitribai Phule Pune University, Ganeshkhind, Pune, Maharashtra 411 007, India
| | - Sandesh S. Shinde
- Department of Chemistry, Savitribai Phule Pune University, Ganeshkhind, Pune, Maharashtra 411 007, India
- Department of Chemistry, Savitribai Phule Pune University, Ganeshkhind, Pune, Maharashtra 411 007, India
| | - Vinod Nandre
- Department of Chemistry, Savitribai Phule Pune University, Ganeshkhind, Pune, Maharashtra 411 007, India
- Department of Chemistry, Savitribai Phule Pune University, Ganeshkhind, Pune, Maharashtra 411 007, India
| | - Kisan M. Kodam
- Department of Chemistry, Savitribai Phule Pune University, Ganeshkhind, Pune, Maharashtra 411 007, India
- Department of Chemistry, Savitribai Phule Pune University, Ganeshkhind, Pune, Maharashtra 411 007, India
| | - Santosh S. Terdale
- Department of Chemistry, Savitribai Phule Pune University, Ganeshkhind, Pune, Maharashtra 411 007, India
- Department of Chemistry, Savitribai Phule Pune University, Ganeshkhind, Pune, Maharashtra 411 007, India
| |
Collapse
|
8
|
Zhang L, Yan Z, Lv Y, Shen S. Studies on synthesis, volume and conductivity behaviors of three novel pharmaceutical salts [CnPy][AceSA] (n = 8, 10, 12). J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.117336] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
9
|
Friction, Wear and Corrosion Behavior of Environmentally-Friendly Fatty Acid Ionic Liquids. COATINGS 2020. [DOI: 10.3390/coatings11010021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
This research deals with the tribological behavior and corrosion performance of three novel fatty acid anion-based ionic liquids (FAILs): methyltrioctylammonium hexanoate ([N8,8,8,1][C6:0]), methyltrioctylammonium octadecanoate ([N8,8,8,1][C18:0]) and methyltrioctylammonium octadec-9-enoate ([N8,8,8,1][C18:1]), employed for the first time as neat lubricant with five different material pairs: steel–steel, steel–aluminum alloy, steel–bronze, steel–cast iron and steel–tungsten carbide. These novel substances were previously obtained from fatty acids via metathesis reactions, identified structurally via NMR (nuclear magnetic resonance) and FTIR (Fourier-transform infrared spectroscopy) techniques, and then characterized from a physicochemical (density, water solubility, viscosity, viscosity index and refractive index) and environmental (bacterial toxicity and biodegradability) points of view. The corrosion behavior of the three FAILs was studied by exposure at room temperature, while friction and wear tests were performed with a reciprocating ball-on-disc configuration. The main results and conclusions obtained were: (1) Corrosion in the presence of the three FAILs is observed only on the bronze surface; (2) All FAILs presented similar tribological behavior as lubricants for each tested material pair; (3) XPS (X-ray photoelectron spectroscopy) analysis indicated that the surface behavior of the three FAILs in each material pair was similar, with low chemical interaction with the surfaces.
Collapse
|
10
|
Khan A, Sharma OP, Khatri OP. Ionic Liquids-Based Aqueous Lubricants: Emulsion Stability to Enhancement of Surface Wettability and Tribological Properties. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c05046] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Amzad Khan
- CSIR-Indian Institute of Petroleum, Dehradun 248005, India
- Academy of Scientific and Innovative Research, Ghaziabad 201002, India
| | - Om P. Sharma
- CSIR-Indian Institute of Petroleum, Dehradun 248005, India
| | - Om P. Khatri
- CSIR-Indian Institute of Petroleum, Dehradun 248005, India
- Academy of Scientific and Innovative Research, Ghaziabad 201002, India
| |
Collapse
|
11
|
Tampucci S, Guazzelli L, Burgalassi S, Carpi S, Chetoni P, Mezzetta A, Nieri P, Polini B, Pomelli CS, Terreni E, Monti D. pH-Responsive Nanostructures Based on Surface Active Fatty Acid-Protic Ionic Liquids for Imiquimod Delivery in Skin Cancer Topical Therapy. Pharmaceutics 2020; 12:pharmaceutics12111078. [PMID: 33187215 PMCID: PMC7697672 DOI: 10.3390/pharmaceutics12111078] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 11/06/2020] [Accepted: 11/07/2020] [Indexed: 12/12/2022] Open
Abstract
For topical treatment of skin cancer, the design of pH-responsive nanocarriers able to selectively release the drug in the tumor acidic microenvironment represents a reliable option for targeted delivery. In this context, a series of newly synthesized surface-active fatty acid-protic ionic liquids (FA-PILs), based on tetramethylguanidinium cation and different natural hydrophobic fatty acid carboxylates, have been investigated with the aim of developing a pH-sensitive nanostructured drug delivery system for cutaneous administration in the skin cancer therapy. The capability of FA-PILs to arrange in micelles when combined with each other and with the non-ionic surfactant d-α-Tocopherol polyethylene glycol succinate (vitamin E TPGS) as well as their ability to solubilize imiquimod, an immuno-stimulant drug used for the treatment of skin cancerous lesions, have been demonstrated. The FA-PILs-TPGS mixed micelles showed pH-sensitivity, suggesting that the acidic environment of cancer cells can trigger nanostructures’ swelling and collapse with consequent rapid release of imiquimod and drug cytotoxic potential enhancement. The in vitro permeation/penetration study showed that the micellar formulation produced effective imiquimod concentrations into the skin exposed to acid environment, representing a potential efficacious and selective drug delivery system able to trigger the drug release in the tumor tissues, at lower and less irritating drug concentrations.
Collapse
Affiliation(s)
- Silvia Tampucci
- Department of Pharmacy, University of Pisa, Via Bonanno 6, 56127 Pisa, Italy; (S.B.); (S.C.); (P.C.); (A.M.); (P.N.); (B.P.); (C.S.P.); (E.T.); (D.M.)
- Correspondence: (S.T.); (L.G.)
| | - Lorenzo Guazzelli
- Department of Pharmacy, University of Pisa, Via Bonanno 6, 56127 Pisa, Italy; (S.B.); (S.C.); (P.C.); (A.M.); (P.N.); (B.P.); (C.S.P.); (E.T.); (D.M.)
- Correspondence: (S.T.); (L.G.)
| | - Susi Burgalassi
- Department of Pharmacy, University of Pisa, Via Bonanno 6, 56127 Pisa, Italy; (S.B.); (S.C.); (P.C.); (A.M.); (P.N.); (B.P.); (C.S.P.); (E.T.); (D.M.)
| | - Sara Carpi
- Department of Pharmacy, University of Pisa, Via Bonanno 6, 56127 Pisa, Italy; (S.B.); (S.C.); (P.C.); (A.M.); (P.N.); (B.P.); (C.S.P.); (E.T.); (D.M.)
- NEST, Istituto Nanoscienze-CNR and Scuola Normale Superiore, Piazza San Silvestro 12, 56127 Pisa, Italy
| | - Patrizia Chetoni
- Department of Pharmacy, University of Pisa, Via Bonanno 6, 56127 Pisa, Italy; (S.B.); (S.C.); (P.C.); (A.M.); (P.N.); (B.P.); (C.S.P.); (E.T.); (D.M.)
| | - Andrea Mezzetta
- Department of Pharmacy, University of Pisa, Via Bonanno 6, 56127 Pisa, Italy; (S.B.); (S.C.); (P.C.); (A.M.); (P.N.); (B.P.); (C.S.P.); (E.T.); (D.M.)
| | - Paola Nieri
- Department of Pharmacy, University of Pisa, Via Bonanno 6, 56127 Pisa, Italy; (S.B.); (S.C.); (P.C.); (A.M.); (P.N.); (B.P.); (C.S.P.); (E.T.); (D.M.)
| | - Beatrice Polini
- Department of Pharmacy, University of Pisa, Via Bonanno 6, 56127 Pisa, Italy; (S.B.); (S.C.); (P.C.); (A.M.); (P.N.); (B.P.); (C.S.P.); (E.T.); (D.M.)
| | - Christian Silvio Pomelli
- Department of Pharmacy, University of Pisa, Via Bonanno 6, 56127 Pisa, Italy; (S.B.); (S.C.); (P.C.); (A.M.); (P.N.); (B.P.); (C.S.P.); (E.T.); (D.M.)
| | - Eleonora Terreni
- Department of Pharmacy, University of Pisa, Via Bonanno 6, 56127 Pisa, Italy; (S.B.); (S.C.); (P.C.); (A.M.); (P.N.); (B.P.); (C.S.P.); (E.T.); (D.M.)
| | - Daniela Monti
- Department of Pharmacy, University of Pisa, Via Bonanno 6, 56127 Pisa, Italy; (S.B.); (S.C.); (P.C.); (A.M.); (P.N.); (B.P.); (C.S.P.); (E.T.); (D.M.)
| |
Collapse
|
12
|
Hassanshahi N, Hu G, Li J. Application of Ionic Liquids for Chemical Demulsification: A Review. Molecules 2020; 25:E4915. [PMID: 33114253 PMCID: PMC7660632 DOI: 10.3390/molecules25214915] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Revised: 10/16/2020] [Accepted: 10/19/2020] [Indexed: 01/17/2023] Open
Abstract
In recent years, ionic liquids have received increasing interests as an effective demulsifier due to their characteristics of non-flammability, thermal stability, recyclability, and low vapor pressure. In this study, emulsion formation and types, chemical demulsification system, the application of ionic liquids as a chemical demulsifier, and key factors affecting their performance were comprehensively reviewed. Future challenges and opportunities of ionic liquids application for chemical demulsification were also discussed. The review indicted that the demulsification performance was affected by the type, molecular weight, and concentration of ionic liquids. Moreover, other factors, including the salinity of aqueous phase, temperature, and oil types, could affect the demulsification process. It can be concluded that ionic liquids can be used as a suitable substitute for commercial demulsifiers, but future efforts should be required to develop non-toxic and less expensive ionic liquids with low viscosity, and the demulsification efficiency could be improved through the application of ionic liquids with other methods such as organic solvents.
Collapse
Affiliation(s)
- Nahid Hassanshahi
- Environmental Engineering Program, University of Northern British Columbia, Prince George, BC V2N 4Z9, Canada;
| | - Guangji Hu
- School of Engineering, University of British Columbia, Kelowna, BC V1V 1V7, Canada
| | - Jianbing Li
- Environmental Engineering Program, University of Northern British Columbia, Prince George, BC V2N 4Z9, Canada;
| |
Collapse
|
13
|
Two fatty acid anion-based ionic liquids - part II: Effectiveness as an additive to a polyol ester. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.113158] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
|