1
|
Modeling and Experiment for the Diffusion Coefficient of Subcritical Carbon Dioxide in Poly(methyl methacrylate) to Predict Gas Sorption and Desorption. Polymers (Basel) 2022; 14:polym14030596. [PMID: 35160585 PMCID: PMC8838939 DOI: 10.3390/polym14030596] [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: 01/05/2022] [Revised: 01/29/2022] [Accepted: 01/30/2022] [Indexed: 12/10/2022] Open
Abstract
Several researchers have investigated the phenomenon of polymer–gas mixtures, and a few have proposed diffusion coefficient values instead of a diffusion coefficient model. There is a paucity of studies focused on the continuous change in the diffusion coefficient corresponding to the overall pressure and temperature range of the mixture. In this study, the gas sorption and desorption experiments of poly(methyl methacrylate) (PMMA) were conducted via solid-state batch foaming, and the weight change was measured using the gravimetric method with a magnetic balance. The control parameters were temperature, which ranged from 290 to 370 K, and pressure, which ranged from 2 to 5 MPa in the subcritical regime. Based on the experimental data, the diffusion coefficient of the PMMA was calculated using Fick’s law. After calculating the diffusion coefficient in the range of the experiment, the diffusion coefficient model was employed using the least-squares method. Subsequently, the model was validated by comparing the obtained results with those in the literature, and the overall trend was found to be consistent. Therefore, it was confirmed that there were slight differences between the diffusion coefficient obtained using only Fick’s equation and the value using by a different method.
Collapse
|
2
|
Kiran E, Sarver JA, Hassler JC. Solubility and Diffusivity of CO2 and N2 in Polymers and Polymer Swelling, Glass Transition, Melting, and Crystallization at High Pressure. A Critical Review and Perspectives on Experimental Methods, Data, and Modeling. J Supercrit Fluids 2021. [DOI: 10.1016/j.supflu.2021.105378] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
|
3
|
Qian YH, Cao JM, Li XK, Cao GP, Wang CC, Shi YH. Experimental study and thermodynamic model for respective solubilities of CO 2
and ethanol for CO 2
-ethanol-polystyrene ternary system at elevated pressure and temperature. J Appl Polym Sci 2018. [DOI: 10.1002/app.46281] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Ying-Hui Qian
- UNILAB, State Key Lab of Chemical Engineering, School of Chemical Engineering; East China University of Science and Technology; Shanghai 200237 China
| | - Jun-Ming Cao
- Department of Chemistry; Fudan University; Shanghai 200433 China
| | - Xue-Kun Li
- UNILAB, State Key Lab of Chemical Engineering, School of Chemical Engineering; East China University of Science and Technology; Shanghai 200237 China
| | - Gui-Ping Cao
- UNILAB, State Key Lab of Chemical Engineering, School of Chemical Engineering; East China University of Science and Technology; Shanghai 200237 China
| | - Chang-Chun Wang
- Department of Macromolecular Science; Fudan University; Shanghai 200433 China
| | - Yun-Hai Shi
- UNILAB, State Key Lab of Chemical Engineering, School of Chemical Engineering; East China University of Science and Technology; Shanghai 200237 China
| |
Collapse
|