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Lis H, Paszkiewicz M, Godlewska K, Maculewicz J, Kowalska D, Stepnowski P, Caban M. Ionic liquid-based functionalized materials for analytical chemistry. J Chromatogr A 2022; 1681:463460. [DOI: 10.1016/j.chroma.2022.463460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 08/26/2022] [Accepted: 08/29/2022] [Indexed: 11/25/2022]
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Chen S, Yang H, Huang K, Ge X, Yao H, Tang J, Ren J, Ren S, Ma Y. Quantitative Study on Solubility Parameters and Related Thermodynamic Parameters of PVA with Different Alcoholysis Degrees. Polymers (Basel) 2021; 13:3778. [PMID: 34771335 PMCID: PMC8586924 DOI: 10.3390/polym13213778] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 10/29/2021] [Accepted: 10/29/2021] [Indexed: 11/17/2022] Open
Abstract
In recent years, inverse gas chromatography (IGC) and molecular dynamics simulation methods have been used to characterize the solubility parameters and surface parameters of polymers, which can provide quantitative reference for the further study of the surface and interface compatibility of polymer components in the future. In this paper, the solubility parameters and surface parameters of two kinds of common alcoholysis, PVA88 and PVA99, are studied by using the IGC method. The accuracy of the solubility parameters obtained by the IGC experiment is verified by molecular dynamics simulation. On the basis of this, the influence of repeated units of polyvinyl alcohol (PVA) on solubility parameters is studied, so as to determine the appropriate chain length of the PVA for simulation verification calculation. The results show that the solubility parameters are not much different when the PVA chain length is 30 and above; the numerical trends of the solubility parameters of PVA88 and PVA99 at room temperature are the same as the results of molecular dynamics simulation; the dispersive surface energy γsd and the specific surface energy γssp are scattered with the temperature distribution and have a small dependence on temperature. On the whole, the surface energy of PVA99 with a higher alcoholysis degree is higher than that of PVA88 with a lower alcoholysis degree. The surface specific adsorption free energy (ΔGsp) indicates that both PVA88 and PVA99 are amphoteric meta-acid materials, and the acidity of PVA99 is stronger.
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Affiliation(s)
- Siqi Chen
- Key Laboratory of Bio-Based Material Science and Technology of Ministry of Education, College of Materials Science and Engineering, Northeast Forestry University, Harbin 150040, China; (S.C.); (Y.M.)
- College of Material Science, Engineering Northeast Forestry University, Harbin 150040, China; (H.Y.); (K.H.); (X.G.); (H.Y.); (J.T.)
| | - Hao Yang
- College of Material Science, Engineering Northeast Forestry University, Harbin 150040, China; (H.Y.); (K.H.); (X.G.); (H.Y.); (J.T.)
| | - Kui Huang
- College of Material Science, Engineering Northeast Forestry University, Harbin 150040, China; (H.Y.); (K.H.); (X.G.); (H.Y.); (J.T.)
| | - Xiaolong Ge
- College of Material Science, Engineering Northeast Forestry University, Harbin 150040, China; (H.Y.); (K.H.); (X.G.); (H.Y.); (J.T.)
| | - Hanpeng Yao
- College of Material Science, Engineering Northeast Forestry University, Harbin 150040, China; (H.Y.); (K.H.); (X.G.); (H.Y.); (J.T.)
| | - Junxiang Tang
- College of Material Science, Engineering Northeast Forestry University, Harbin 150040, China; (H.Y.); (K.H.); (X.G.); (H.Y.); (J.T.)
| | - Junxue Ren
- School of Astronautics, Beihang University, Beijing 100191, China;
| | - Shixue Ren
- Key Laboratory of Bio-Based Material Science and Technology of Ministry of Education, College of Materials Science and Engineering, Northeast Forestry University, Harbin 150040, China; (S.C.); (Y.M.)
- College of Material Science, Engineering Northeast Forestry University, Harbin 150040, China; (H.Y.); (K.H.); (X.G.); (H.Y.); (J.T.)
| | - Yanli Ma
- Key Laboratory of Bio-Based Material Science and Technology of Ministry of Education, College of Materials Science and Engineering, Northeast Forestry University, Harbin 150040, China; (S.C.); (Y.M.)
- College of Material Science, Engineering Northeast Forestry University, Harbin 150040, China; (H.Y.); (K.H.); (X.G.); (H.Y.); (J.T.)
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Determination of physicochemical properties of ionic liquids by gas chromatography. J Chromatogr A 2021; 1644:461964. [PMID: 33741140 DOI: 10.1016/j.chroma.2021.461964] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Revised: 01/24/2021] [Accepted: 01/31/2021] [Indexed: 12/27/2022]
Abstract
Over the years room temperature ionic liquids have gained attention as solvents with favorable environmental and technical features. Both chromatographic and conventional methods afford suitable tools for the study of their physicochemical properties. Use of gas chromatography compared to conventional methods for the measurement of physicochemical properties of ionic liquids have several advantages; very low sample concentrations, high accuracy, faster measurements, use of wider temperature range and the possibility to determine physicochemical properties of impure samples. Also, general purpose gas chromatography instruments are widely available in most laboratories thus alleviating the need to purchase more specific instruments for less common physiochemical measurements. Some of the main types of physicochemical properties of ionic liquids accessible using gas chromatography include gas-liquid partition constants, infinite dilution activity coefficients, partial molar quantities, solubility parameters, system constants of the solvation parameter model, thermal stability, transport properties, and catalytic and other surface properties.
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Cakar F. Synthesis and thermodynamic characterization of poly(methyl methacrylate)/multiwall carbon nanotube nanocomposite. SURF INTERFACE ANAL 2020. [DOI: 10.1002/sia.6911] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Fatih Cakar
- Department of Chemistry Yildiz Technical University Istanbul Turkey
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