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Bashir Z, Lock SSM, Hira NE, Ilyas SU, Lim LG, Lock ISM, Yiin CL, Darban MA. A review on recent advances of cellulose acetate membranes for gas separation. RSC Adv 2024; 14:19560-19580. [PMID: 38895522 PMCID: PMC11184368 DOI: 10.1039/d4ra01315h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Accepted: 05/07/2024] [Indexed: 06/21/2024] Open
Abstract
This review thoroughly investigates the wide-ranging applications of cellulose-based materials, with a particular focus on their utility in gas separation processes. By focusing on cellulose acetate (CA), the review underscores its cost-effectiveness, robust mechanical attributes, and noteworthy CO2 solubility, positioning it as a frontrunner among polymeric gas separation membranes. The synthesis techniques for CA membranes are meticulously examined, and the discourse extends to polymeric blend membranes, underscoring their distinct advantages in gas separation applications. The exploration of advancements in CA-based mixed matrix membranes, particularly the incorporation of nanomaterials, sheds light on the significant versatility and potential improvements offered by composite materials. Fabrication techniques demonstrate exceptional gas separation performance, with selectivity values reaching up to 70.9 for CO2/CH4 and 84.1 for CO2/N2. CA/PEG (polyethylene glycol) and CA/MOF (metal-organic frameworks) demonstrated exceptional selectivity in composite membranes with favorable permeability, surpassing other composite CA membranes. Their selectivity with good permeability lies well above all the synthesised cellulose. As challenges in experimental scale separation emerge, the review seamlessly transitions to molecular simulations, emphasizing their crucial role in understanding molecular interactions and overcoming scalability issues. The significance of the review lies in addressing environmental concerns, optimizing membrane compositions, understanding molecular interactions, and bridging knowledge gaps, offering guidance for the sustainable evolution of CA-based materials in gas separation technologies.
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Affiliation(s)
- Zunara Bashir
- Department of Chemical Engineering, Universiti Teknologi PETRONAS 32610 Seri Iskandar Perak Darul Ridzuan Malaysia
- Centre of Carbon Capture, Utilisation and Storage (CCCUS), Universiti Teknologi PETRONAS 32610 Seri Iskandar Perak Darul Ridzuan Malaysia
| | - Serene Sow Mun Lock
- Department of Chemical Engineering, Universiti Teknologi PETRONAS 32610 Seri Iskandar Perak Darul Ridzuan Malaysia
- Centre of Carbon Capture, Utilisation and Storage (CCCUS), Universiti Teknologi PETRONAS 32610 Seri Iskandar Perak Darul Ridzuan Malaysia
| | - Noor E Hira
- Department of Chemical Engineering, Universiti Teknologi PETRONAS 32610 Seri Iskandar Perak Darul Ridzuan Malaysia
- Centre of Carbon Capture, Utilisation and Storage (CCCUS), Universiti Teknologi PETRONAS 32610 Seri Iskandar Perak Darul Ridzuan Malaysia
| | - Suhaib Umer Ilyas
- Chemical Engineering Department, University of Jeddah 23890 Jeddah Kingdom of Saudi Arabia
| | - Lam Ghai Lim
- Department of Electrical and Robotics Engineering, School of Engineering, Monash University Malaysia Jalan Lagoon Selatan 47500 Bandar Sunway Selangor Malaysia
| | - Irene Sow Mei Lock
- Group Technical Solutions, Project Delivery and Technology Division, PETRONAS Kuala Lumpur 50088 Malaysia
| | - Chung Loong Yiin
- Department of Chemical Engineering and Energy Sustainability, Faculty of Engineering, Universiti Malaysia Sarawak (UNIMAS) 94300 Kota Samarahan Sarawak Malaysia
- Institute of Sustainable and Renewable Energy (ISuRE), Universiti Malaysia Sarawak (UNIMAS) 94300 Kota Samarahan Sarawak Malaysia
| | - Mehtab Ali Darban
- Department of Chemical Engineering, Universiti Teknologi PETRONAS 32610 Seri Iskandar Perak Darul Ridzuan Malaysia
- Centre of Carbon Capture, Utilisation and Storage (CCCUS), Universiti Teknologi PETRONAS 32610 Seri Iskandar Perak Darul Ridzuan Malaysia
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Salahshoori I, Vaziri A, Jahanmardi R, Mohseni MM, Khonakdar HA. Molecular Simulation Studies of Pharmaceutical Pollutant Removal (Rosuvastatin and Simvastatin) Using Novel Modified-MOF Nanostructures (UIO-66, UIO-66/Chitosan, and UIO-66/Oxidized Chitosan). ACS APPLIED MATERIALS & INTERFACES 2024; 16:26685-26712. [PMID: 38722359 DOI: 10.1021/acsami.4c01365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2024]
Abstract
The ubiquitous presence of pharmaceutical pollutants in the environment significantly threatens human health and aquatic ecosystems. Conventional wastewater treatment processes often fall short of effectively removing these emerging contaminants. Therefore, the development of high-performance adsorbents is crucial for environmental remediation. This research utilizes molecular simulation to explore the potential of novel modified metal-organic frameworks (MOFs) in pharmaceutical pollutant removal, paving the way for the design of efficient wastewater treatment strategies. Utilizing UIO-66, a robust MOF, as the base material, we developed UIO-66 functionalized with chitosan (CHI) and oxidized chitosan (OCHI). These modified MOFs' physical and chemical properties were first investigated through various characterization techniques. Subsequently, molecular dynamics simulation (MDS) and Monte Carlo simulation (MCS) were employed to elucidate the adsorption mechanisms of rosuvastatin (ROSU) and simvastatin (SIMV), two prevalent pharmaceutical pollutants, onto these nanostructures. MCS calculations demonstrated a significant enhancement in the adsorption energy by incorporating CHI and OCHI into UIO-66. This increased ROSU from -14,522 to -16,459 kcal/mol and SIMV from -17,652 to -21,207 kcal/mol. Moreover, MDS reveals ROSU rejection rates in neat UIO-66 to be at 40%, rising to 60 and 70% with CHI and OCHI. Accumulation rates increase from 4 Å in UIO-66 to 6 and 9 Å in UIO-CHI and UIO-OCHI. Concentration analysis shows SIMV rejection surges from 50 to 90%, with accumulation rates increasing from 6 to 11 Å with CHI and OCHI in UIO-66. Functionalizing UIO-66 with CHI and OCHI significantly enhanced the adsorption capacity and selectivity for ROSU and SIMV. Abundant hydroxyl and amino groups facilitated strong interactions, improving performance over that of unmodified UIO-66. Surface functionalization plays a vital role in customizing the MOFs for pharmaceutical pollutant removal. These insights guide next-gen adsorbent development, offering high efficiency and selectivity for wastewater treatment.
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Affiliation(s)
- Iman Salahshoori
- Department of Chemical Engineering, Science and Research Branch, Islamic Azad University, P.O. Box 14515-775, Tehran 1477893855, Iran
| | - Ali Vaziri
- Department of Chemical Engineering, Science and Research Branch, Islamic Azad University, P.O. Box 14515-775, Tehran 1477893855, Iran
| | - Reza Jahanmardi
- Department of Chemical Engineering, Science and Research Branch, Islamic Azad University, P.O. Box 14515-775, Tehran 1477893855, Iran
| | - Mehdi Moayed Mohseni
- Department of Chemical Engineering, Science and Research Branch, Islamic Azad University, P.O. Box 14515-775, Tehran 1477893855, Iran
| | - Hossein Ali Khonakdar
- Department of Polymer Processing, Iran Polymer and Petrochemical Institute, P.O. Box 14965-115, Tehran 14977-13115, Iran
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Xia P, Shao H, He A. Excellent Oxygen Barrier Property of Unfilled Natural Rubber/ trans-Butadiene-co-Isoprene Rubber Vulcanizates under the Synergistic Effect of Crosslinking Density and Crystallization. Polymers (Basel) 2024; 16:345. [PMID: 38337234 DOI: 10.3390/polym16030345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Revised: 01/22/2024] [Accepted: 01/24/2024] [Indexed: 02/12/2024] Open
Abstract
The thermo-oxidative aging of rubber products is inevitable during their use and leads to product failure and can even endanger safety. Oxygen is an important factor that cannot be ignored during the thermo-oxidative aging process. Thus, the gas barrier property of rubber products is of significant concern. In this work, a strategy of crystallizing rubber in unfilled rubber composites was designed by firstly constructing a dual synergistic mechanism of crosslinking density and crystallization on the oxygen barrier properties. As a crystallizable polymer, trans-butadiene-co-isoprene rubber (TBIR) shows dendritic fibril crystals or spherulites in natural rubber (NR)/TBIR vulcanizates. Meanwhile, the vulcanizates containing TBIR have a higher crosslinking density than NR vulcanizates. These TBIR-rich crystals and high-crosslinking-density structures are distributed in vulcanizates like continuous islands. Contrary to what has been reported in the literature, the decrease in oxygen permeability of NR/TBIR is not only due to the high crosslinking density and free volume of the polymer matrix, but more importantly, the spherulites of TBIR play a role in blocking and prolonging the oxygen diffusion path during the diffusion of oxygen in the polymer composites. We propose that the compatible crystalline polymer can replace the lamellar filler, play the role of the oxygen barrier in rubber composites, reduce the diffusion and dissolution of oxygen, and achieve the effect of improving the thermo-oxidative aging property of the rubber composite. Future research will follow the morphology evolution of TBIR crystals, their crosslinking structure and density, and interactions between TBIR and NR on the oxygen barrier and thermo-oxidative aging property.
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Affiliation(s)
- Pengcheng Xia
- Shandong Provincial Key Laboratory of Olefin Catalysis and Polymerization, Key Laboratory of Rubber-Plastics (Ministry of Education), Qingdao University of Science and Technology, Qingdao 266042, China
| | - Huafeng Shao
- Shandong Provincial Key Laboratory of Olefin Catalysis and Polymerization, Key Laboratory of Rubber-Plastics (Ministry of Education), Qingdao University of Science and Technology, Qingdao 266042, China
| | - Aihua He
- Shandong Provincial Key Laboratory of Olefin Catalysis and Polymerization, Key Laboratory of Rubber-Plastics (Ministry of Education), Qingdao University of Science and Technology, Qingdao 266042, China
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Soleimani R, Saeedi Dehaghani AH. A theoretical probe into the separation of CO 2/CH 4/N 2 mixtures with polysulfone/polydimethylsiloxane-nano zinc oxide MMM. Sci Rep 2023; 13:9543. [PMID: 37308483 DOI: 10.1038/s41598-023-36051-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Accepted: 05/28/2023] [Indexed: 06/14/2023] Open
Abstract
In the current investigation, molecular dynamics (MD) and Grand Canonical Monte Carlo (GCMC) simulation as remarkable and competent approaches have been employed for understanding structural and transport properties of MMMs in the realm of gas separation. The two commonly used polymers i.e. polysulfone (Psf) and polydimethylsiloxane (PDMS) as well as zinc oxide (ZnO) nanoparticle (NP) were used to carefully examine the transport properties of three light gasses (CO2, N2 and CH4) through simple Psf, Psf/PDMS composite loaded by different amounts of ZnO NP. Also, the fractional free volume (FFV), X-ray diffraction (XRD), glass transition temperature (Tg), and Equilibrium density were calculated to scrutinize the structural characterizations of the membranes. Moreover, the effect of feed pressure (4-16 bar) on gas separation performance of simulated MMMs was investigated. Results obtained in different experiments showed a clear improvement in the performance of simulated membranes by adding PDMS to PSf matrix. The selectivity of studied MMMs was in the range from 50.91 to 63.05 at pressures varying from 4 to 16 bar for the CO2/N2 gas pair, whereas the corresponding value for CO2/CH4 system was found to be in the range 27.27-46.24. For 6 wt% ZnO in 80%PSf + 20%PDMS membrane, high permeabilities of 78.02, 2.86 and 1.33 barrers were observed for CO2, CH4 and N2 gases, respectively. The 90%PSf + 10%PDMS membrane with 2% ZnO had a highest CO2/N2 selectivity value of 63.05 and its CO2 permeability at 8 bar was 57 barrer.
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Affiliation(s)
- Reza Soleimani
- Faculty of Chemical Engineering, Tarbiat Modares University, P.O. Box 14115-143, Tehran, Iran
| | - Amir Hossein Saeedi Dehaghani
- Department of Petroleum Engineering, Faculty of Chemical Engineering, Tarbiat Modares University, P.O. Box 14115-143, Tehran, Iran.
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Patil D, Gupta T. Realizing high performance gas filters through nano-particle deposition. Phys Chem Chem Phys 2023; 25:9300-9310. [PMID: 36920157 DOI: 10.1039/d2cp03825k] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/05/2023]
Abstract
We have studied the separation of a mixture of hydrogen and methane in equal proportions, using a thin film comprised of 10 layers of nanoparticles deposited layer-wise using our "two-point sticking algorithm" which simulates controlled agglomeration of such nanoparticles. We simulate the process of gas separation using LAMMPS. We have studied the scenario where nanoparticles act like hard spheres, maintaining their shape and size, similar to what has been demonstrated by experiments involving self-assembled nanoparticle thin films. We consider the pressure dependence of the results by working at 3 different initial pressures, 0.1 × P0, 0.5 × P0 and P0, where P0 is the atmospheric pressure. Three different diameters of the nanoparticles, namely 3 nm, 6 nm and 9 nm, are considered, and therefore the overall thickness of the membranes considered ranges from 30 nm to 90 nm. We obtained perm-selectivity values that are significantly higher than the Robeson line for hydrogen-methane gas separation, indicating the novelty and therefore the significant applications of this work. We find that while the permeance of hydrogen remains more or less steady with a ten-fold increase of pressure, the corresponding fall in methane's permeance is very sharp. The fall in methane's permeance with increasing pressure is more pronounced the smaller the nanoparticles of the membrane being used. This results in an even higher selectivity at higher pressure for smaller nanoparticle based membranes.
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Affiliation(s)
- Dhruva Patil
- Department of Mechanical Engineering, R. V. College of Engineering, Bangalore, 560059, India
| | - Tribikram Gupta
- Department of Physics, R. V. College of Engineering, Bangalore, 560059, India.
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Salahshoori I, Mohseni A, Namayandeh Jorabchi M, Ghasemi S, Afshar M, Wohlrab S. Study of modified PVDF membranes with high-capacity adsorption features using Quantum mechanics, Monte Carlo, and Molecular Dynamics Simulations. J Mol Liq 2023. [DOI: 10.1016/j.molliq.2023.121286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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Asif K, Lock SSM, Taqvi SAA, Jusoh N, Yiin CL, Chin BLF. A molecular simulation study on amine-functionalized silica/polysulfone mixed matrix membrane for mixed gas separation. CHEMOSPHERE 2023; 311:136936. [PMID: 36273613 DOI: 10.1016/j.chemosphere.2022.136936] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Revised: 09/24/2022] [Accepted: 10/16/2022] [Indexed: 06/16/2023]
Abstract
Polysulfone (PSF) based mixed matrix membranes (MMMs) are one of the most broadly studied polymeric materials used for CO2/CH4 separation. The performance of existing PSF membranes encounters a bottleneck for widespread expansion in industrial applications due to the trade-off amongst permeability and selectivity. Membrane performance has been postulated to be enhanced via functionalization of filler at different weight percentages. Nonetheless, the preparation of functionalized MMMs without defects and its empirical study that exhibits improved CO2/CH4 separation performance is challenging at an experimental scale that needs prior knowledge of the compatibility between the filler and polymer. Molecular simulation approaches can be used to explore the effect of functionalization on MMM's gas transport properties at an atomic level without the challenges in the experimental study, however, they have received less scrutiny to date. In addition, most of the research has focused on pure gas studies while mixed gas transport properties that reflect real separation in functionalized silica/PSF MMMs are scarcely available. In this work, a molecular simulation computational framework has been developed to investigate the structural, physical properties and gas transport behavior of amine-functionalized silica/PSF-based MMMs. The effect of varying weight percentages (i.e., 15-30 wt.%) of amine-functionalized silica and gas concentrations (i.e., 30% CH4/CO2, 50% CH4/CO2, and 70% CH4/CO2) on physical and gas transport characteristics in amine-functionalized silica/PSF MMMs at 308.15 K and 1 atm has been investigated. Functionalization of silica nanoparticles was found to increase the diffusion and solubility coefficients, leading to an increase in the percentage enhancement of permeability and selectivity for amine-functionalized silica/PSF MMM by 566% and 56%, respectively, compared to silica/PSF-based MMMs at optimal weight percentage of 20 wt.%. The model's permeability differed by 7.1% under mixed gas conditions. The findings of this study could help to improve real CO2/CH4 separation in the future design and concept of functionalized MMMs using molecular simulation and empirical modeling strategies.
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Affiliation(s)
- Khadija Asif
- CO(2) Research Center (CO(2)RES), Department of Chemical Engineering, Universiti Teknologi PETRONAS, 32610, Seri Iskandar, Malaysia
| | - Serene Sow Mun Lock
- CO(2) Research Center (CO(2)RES), Department of Chemical Engineering, Universiti Teknologi PETRONAS, 32610, Seri Iskandar, Malaysia.
| | - Syed Ali Ammar Taqvi
- Department of Chemical Engineering, NED University of Engineering and Technology, Karachi, 75270, Pakistan
| | - Norwahyu Jusoh
- CO(2) Research Center (CO(2)RES), Department of Chemical Engineering, Universiti Teknologi PETRONAS, 32610, Seri Iskandar, Malaysia
| | - Chung Loong Yiin
- Department of Chemical Engineering and Energy Sustainability, Faculty of Engineering, Universiti Malaysia Sarawak (UNIMAS), 94300 Kota Samarahan, Sarawak, Malaysia; Institute of Sustainable and Renewable Energy (ISuRE), Universiti Malaysia Sarawak (UNIMAS), 94300 Kota Samarahan, Sarawak, Malaysia
| | - Bridgid Lai Fui Chin
- Department of Chemical and Energy Engineering, Faculty of Engineering and Science, Curtin University Malaysia, CDT 250, 98009, Miri Sarawak, Malaysia; Energy and Environment Research Cluster, Faculty of Engineering and Science, Curtin University Malaysia, CDT 250, 98009, Miri Sarawak, Malaysia
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Liu Y, Li N, Cui X, Yan W, Su J, Jin L. A Review on the Morphology and Material Properties of the Gas Separation Membrane: Molecular Simulation. MEMBRANES 2022; 12:1274. [PMID: 36557181 PMCID: PMC9783095 DOI: 10.3390/membranes12121274] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/20/2022] [Revised: 12/03/2022] [Accepted: 12/05/2022] [Indexed: 06/17/2023]
Abstract
Gas membrane separation technology is widely applied in different industry processes because of its advantages relating to separation performance and economic efficiency. It is usually difficult and time consuming to determine the suitable membrane materials for specific industrial separation processes through traditional experimental research methods. Molecular simulation is widely used to investigate the microscopic morphology and macroscopic properties of materials, and it guides the improvement of membrane materials. This paper comprehensively reviews the molecular-level exploration of the dominant mechanism and influencing factors of gas membrane-based separation. The thermodynamics and kinetics of polymer membrane synthesis, the molecular interactions among the penetrated gases, the relationships between the membrane properties and the transport characteristics of different gases in the composite membrane are summarized and discussed. The limitations and perspectives of the molecular simulation method in the study of the gas membrane separation process are also presented to rationalize its potential and innovative applications. This review provides a more comprehensive reference for promoting the materials' design and engineering application of the gas separation membrane.
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Affiliation(s)
- Yilin Liu
- School of Human Settlements and Civil Engineering, Xi’an Jiaotong University, No. 28 Xianning West Road, Xi’an 710049, China
| | - Na Li
- School of Chemical Engineering and Technology, Xi’an Jiaotong University, No. 28 Xianning West Road, Xi’an 710049, China
| | - Xin Cui
- School of Human Settlements and Civil Engineering, Xi’an Jiaotong University, No. 28 Xianning West Road, Xi’an 710049, China
| | - Weichao Yan
- School of Human Settlements and Civil Engineering, Xi’an Jiaotong University, No. 28 Xianning West Road, Xi’an 710049, China
| | - Jincai Su
- School of Life Sciences & Chemical Technology, Ngee Ann Polytechnic, 535 Clementi Road, Singapore 599489, Singapore
| | - Liwen Jin
- School of Human Settlements and Civil Engineering, Xi’an Jiaotong University, No. 28 Xianning West Road, Xi’an 710049, China
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Yee CY, Lim LG, Lock SSM, Jusoh N, Yiin CL, Chin BLF, Chan YH, Loy ACM, Mubashir M. A systematic review of the molecular simulation of hybrid membranes for performance enhancements and contaminant removals. CHEMOSPHERE 2022; 307:135844. [PMID: 35952794 DOI: 10.1016/j.chemosphere.2022.135844] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2022] [Revised: 06/24/2022] [Accepted: 07/22/2022] [Indexed: 06/15/2023]
Abstract
Number of research on molecular simulation and design has emerged recently but there is currently a lack of review to present these studies in an organized manner to highlight the advances and feasibility. This paper aims to review the development, structural, physical properties and separation performance of hybrid membranes using molecular simulation approach. The hybrid membranes under review include ionic liquid membrane, mixed matrix membrane, and functionalized hybrid membrane for understanding of the transport mechanism of molecules through the different structures. The understanding of molecular interactions, and alteration of pore sizes and transport channels at atomistic level post incorporation of different components in hybrid membranes posing impact to the selective transport of desired molecules are also covered. Incorporation of molecular simulation of hybrid membrane in related fields such as carbon dioxide (CO2) removal, wastewater treatment, and desalination are also reviewed. Despite the limitations of current molecular simulation methodologies, i.e., not being able to simulate the membrane operation at the actual macroscale in processing plants, it is still able to demonstrate promising results in capturing molecule behaviours of penetrants and membranes at full atomic details with acceptable separation performance accuracy. From the review, it was found that the best performing ionic liquid membrane, mixed matrix membrane and functionalized hybrid membrane can enhance the performance of pristine membrane by 4 folds, 2.9 folds and 3.3 folds, respectively. The future prospects of molecular simulation in hybrid membranes are also presented. This review could provide understanding to the current advancement of molecular simulation approach in hybrid membranes separation. This could also provide a guideline to apply molecular simulation in the related sectors.
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Affiliation(s)
- Cia Yin Yee
- CO(2) Research Center (CO2RES), Department of Chemical Engineering, Universiti Teknologi PETRONAS, 32610, Seri Iskandar, Perak, Malaysia
| | - Lam Ghai Lim
- School of Engineering, Monash University Malaysia, 47500, Bandar Sunway, Selangor, Malaysia
| | - Serene Sow Mun Lock
- CO(2) Research Center (CO2RES), Department of Chemical Engineering, Universiti Teknologi PETRONAS, 32610, Seri Iskandar, Perak, Malaysia.
| | - Norwahyu Jusoh
- CO(2) Research Center (CO2RES), Department of Chemical Engineering, Universiti Teknologi PETRONAS, 32610, Seri Iskandar, Perak, Malaysia
| | - Chung Loong Yiin
- Department of Chemical Engineering and Energy Sustainability, Faculty of Engineering, Universiti Malaysia Sarawak (UNIMAS), Kota Samarahan, 94300, Malaysia; Institute of Sustainable and Renewable Energy (ISuRE), Universiti Malaysia Sarawak (UNIMAS), 94300, Kota Samarahan, Sarawak, Malaysia
| | - Bridgid Lai Fui Chin
- Department of Chemical and Energy Engineering, Faculty of Engineering and Science, Curtin University Malaysia, CDT 250, 98009, Miri Sarawak, Malaysia; Energy and Environment Research Cluster, Faculty of Engineering and Science, Curtin University Malaysia, CDT 250, 98009, Miri Sarawak, Malaysia
| | - Yi Herng Chan
- PETRONAS Research Sdn. Bhd. (PRSB), Lot 3288 & 3289, Off Jalan Ayer Itam, Kawasan Institusi Bangi, 43000, Kajang, Selangor, Malaysia
| | - Adrian Chun Minh Loy
- Department of Chemical Engineering, Monash University, Clayton, VIC, 3800, Australia
| | - Muhammad Mubashir
- Physical Science and Engineering Division, Advanced Membranes and Porous Materials Center, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
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Molecular dynamics investigations into the hydrogen permeation mechanism of polyethylene pipeline material. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120773] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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11
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The Influence of Syringic Acid and Erucic Acid on the Antioxidant Properties of Natural Rubber: Experimental and Molecular Simulation Investigations. Polymers (Basel) 2022; 14:polym14204254. [PMID: 36297834 PMCID: PMC9610587 DOI: 10.3390/polym14204254] [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: 09/15/2022] [Revised: 10/02/2022] [Accepted: 10/07/2022] [Indexed: 11/30/2022] Open
Abstract
In this work, the influence of syringic acid (SA) and erucic acid (EA) on the oxidation resistance of natural rubber (NR) was investigated by combining experimental and computational methods. The antioxidant activities of SA and EA were predicted by calculating the enthalpy of bond dissociation (BDE), the anti-migration ability of antioxidants (AOs) in the rubber matrix by calculating the mean square displacement (MSD), and the effect of antioxidants on oxygen barrier properties of rubber materials by calculating the permeability coefficient (P). The predicted result is that EA has a better comprehensive performance than SA. The DPPH (2,2-diphenyl-1-picrylhydrazyl) test and mechanical properties test demonstrated the results predicted by the simulations. Both SA and EA can protect natural rubber, while EA has a better comprehensive effect.
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Ricci E, Minelli M, De Angelis MG. Modelling Sorption and Transport of Gases in Polymeric Membranes across Different Scales: A Review. MEMBRANES 2022; 12:membranes12090857. [PMID: 36135877 PMCID: PMC9502097 DOI: 10.3390/membranes12090857] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 08/24/2022] [Accepted: 08/27/2022] [Indexed: 06/02/2023]
Abstract
Professor Giulio C. Sarti has provided outstanding contributions to the modelling of fluid sorption and transport in polymeric materials, with a special eye on industrial applications such as membrane separation, due to his Chemical Engineering background. He was the co-creator of innovative theories such as the Non-Equilibrium Theory for Glassy Polymers (NET-GP), a flexible tool to estimate the solubility of pure and mixed fluids in a wide range of polymers, and of the Standard Transport Model (STM) for estimating membrane permeability and selectivity. In this review, inspired by his rigorous and original approach to representing membrane fundamentals, we provide an overview of the most significant and up-to-date modeling tools available to estimate the main properties governing polymeric membranes in fluid separation, namely solubility and diffusivity. The paper is not meant to be comprehensive, but it focuses on those contributions that are most relevant or that show the potential to be relevant in the future. We do not restrict our view to the field of macroscopic modelling, which was the main playground of professor Sarti, but also devote our attention to Molecular and Multiscale Hierarchical Modeling. This work proposes a critical evaluation of the different approaches considered, along with their limitations and potentiality.
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Affiliation(s)
- Eleonora Ricci
- Department of Civil, Chemical, Environmental and Materials Engineering (DICAM), Alma Mater Studiorum—University of Bologna, 40126 Bologna, Italy
| | - Matteo Minelli
- Department of Civil, Chemical, Environmental and Materials Engineering (DICAM), Alma Mater Studiorum—University of Bologna, 40126 Bologna, Italy
| | - Maria Grazia De Angelis
- Institute for Materials and Processes, School of Engineering, University of Edinburgh, Edinburgh EH9 3FB, UK
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Wang C, Cui Z, Song J, Wang Z. Molecular simulation study on the separation of CO2 and N2 in poly(4 methyl-1-pentene) membrane. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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14
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A Multiscale Study of Moisture Influence on the Crumb Rubber Asphalt Mixture Interface. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12146940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
In order to study the influence of moisture on the interface of crumb rubber–asphalt (CR) mixture, the interface bonding performance and crack resistance of a crumb rubber–asphalt mixture under dry and wet conditions were studied at three scales. At the macroscale, the characteristics of medium temperature fatigue cracking and low temperature fracture were studied by semi-circular bending tensile test (SCB) on the example of digital image correlation (DIC) technique. At the microscale, the surface energy of CR with basalt and limestone was measured using the contact angle measurement test, and then the adhesion work was calculated and analyzed. At the molecular scale, the model of CR, the model of basalt representative mineral (augite) and limestone representative mineral (calcite) were studied by molecular dynamics simulation. The relationship between these three scales was further explored to reveal the mechanism of the damage of moisture on the interface deterioration of the CR mixture. The results show that moisture has a certain effect on the interface of the CR mixture, which is characterized by macroscopically reducing the crack resistance of the asphalt mixture, microscopically reducing the adhesion ability between the asphalt and the aggregate and weakening the interaction between the asphalt and aggregate molecules at the molecular scale. Molecular dynamics can accurately simulate the deterioration of micro asphalt-aggregate adhesion under the damage of moisture. The decrease in microadhesion leads to the decrease in the crack resistance of the macro-CR mixture.
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Liu Y, Su J, Duan F, Cui X, Yan W, Jin L. Molecular simulation of enhanced separation of humid air components using GO-PVA nanocomposite membranes under differential pressures. Phys Chem Chem Phys 2022; 24:16442-16452. [PMID: 35708065 DOI: 10.1039/d2cp01411d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Hydrophilic nanocomposite membranes have significant advantages in the separation of water vapor which is the core process in air dehumidification. This paper focuses on exploring the micro-mechanism of enhanced separation using graphene oxide-polyvinyl alcohol (GO-PVA) nanocomposite membranes. The sorption and diffusion behaviors of water vapor and nitrogen in GO-PVA membranes were investigated using molecular dynamics (MD) and Monte Carlo (MC) methods. The study showed that embedding GO into a PVA matrix results in a higher glass transition temperature and fractional free volume. The latter is believed to enhance the diffusivity of gas molecules in polymeric membranes. The interaction between the polymer chains and GO nanoparticles notably promotes the adsorption capacity of water vapor and inhibits nitrogen adsorption in the membrane. A water vapor permeance of 8844.07 Barrer and a separation factor of 3.53 could be achieved with the GO-PVA-0.5 membrane. The analysis confirmed that GO has the same effect on single gas and binary gas mixtures, i.e., increasing the water vapor permeability and selectivity. The calculated water vapor permeance of binary gas is 83% lower than that of single gas permeation. It is expected that this research could provide fundamentals for the optimization and synthesis of gas separation membranes.
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Affiliation(s)
- Yilin Liu
- School of Human Settlements and Civil Engineering, Xi'an Jiaotong University, No. 28 Xianning West Road, Xi'an, 710049, China.
| | - Jincai Su
- School of Life Sciences & Chemical Technology, Ngee Ann Polytechnic, 535 Clementi Road, 599489, Singapore.
| | - Fei Duan
- School of Mechanical and Aerospace Engineering, Nanyang Technological University, 639798, Singapore
| | - Xin Cui
- School of Human Settlements and Civil Engineering, Xi'an Jiaotong University, No. 28 Xianning West Road, Xi'an, 710049, China.
| | - Weichao Yan
- School of Human Settlements and Civil Engineering, Xi'an Jiaotong University, No. 28 Xianning West Road, Xi'an, 710049, China.
| | - Liwen Jin
- School of Human Settlements and Civil Engineering, Xi'an Jiaotong University, No. 28 Xianning West Road, Xi'an, 710049, China.
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Norouzi A, Kojabad ME, Chapalaghi M, Hosseinkhani A, nareh AA, Lay EN. Polyester-based polyurethane mixed-matrix membranes incorporating carbon nanotube-titanium oxide coupled nanohybrid for carbon dioxide capture enhancement: molecular simulation and experimental study. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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17
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Salahshoori I, Babapoor A, Seyfaee A. Elevated performance of the neat, hybrid and composite membranes by the addition of nanoparticles (ZIF-67): A molecular dynamics study. Polym Bull (Berl) 2022. [DOI: 10.1007/s00289-021-03673-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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18
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Thermally cross-linked ultra-robust membranes for plasticization resistance and permeation enhancement – A combined theoretical and experimental study. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2021.120250] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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19
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Chakrabarty T, Giri AK, Sarkar S. Mixed‐matrix gas separation membranes for sustainable future: A mini review. POLYM ADVAN TECHNOL 2022. [DOI: 10.1002/pat.5645] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Tina Chakrabarty
- Environmental Research Group R&D, Tata Steel Jamshedpur Jharkhand India
| | - Arnab Kanti Giri
- Department of Chemistry Karim City College Jamshedpur Jharkhand India
| | - Supriya Sarkar
- Environmental Research Group R&D, Tata Steel Jamshedpur Jharkhand India
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Lv C, Meng X, Wang M, Zhang Y, Hu C, Kim CK, Su Z. Mechanism and Selectivity of Cyclopropanation of 3-Alkenyl-oxindoles with Sulfoxonium Ylides Catalyzed by a Chiral N, N'-Dioxide-Mg(II) Complex. J Org Chem 2021; 86:11683-11697. [PMID: 34343433 DOI: 10.1021/acs.joc.1c01199] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The mechanism and stereoselectivity of an asymmetric cyclopropanation reaction between 3-alkenyl-oxindole and sulfoxonium ylide catalyzed by a chiral N,N'-dioxide-Mg(II) complex were explored using the B3LYP-D3(BJ) functional and the def2-TZVP basis set. The noncatalytic reaction occurred via a stepwise mechanism, with activation barriers of 21.6-23.5 kcal mol-1. The C2-Cα bond formed followed by the carbanion SN2 substitution, constructing a three-membered ring in spiro-cyclopropyl oxindoles, accompanied by the release of dimethylsulfoxide. The electron-withdrawing N-protecting t-butyloxy carbonyl (Boc) and acetyl (Ac) groups in isatin enhanced the local electrophilicity of the C2 atom and the repulsion between the two COPh groups in the reactants, contributing to high reactivity as well as good diastereoselectivity results. The N-Boc-3-phenacylideneoxindole coordinated to the chiral ligand (L-PiPr2) in a bidentate fashion, forming a hexacoordinate-Mg(II) complex as the reactive species. The origin of enantioselectivity was from the shielding effect of 2,6-diisopropylphenyl groups in the ligand toward the si-face of oxindole. The repulsion between the SO(CH3)2 and COPh groups in 3-alkenyl-oxindole and the neighboring ortho-iPr group in the ligand directed the re-face of ylide to attack the re-face of oxindole preferably, contributing to the high diastereoselectivity of the product. A metal-ion-ligand matching relationship was important for a good asymmetric induction effect of the chiral N,N'-dioxide-metal catalyst. A large chiral cavity in the Zn(II) catalyst weakened the shielding effect of 2,6-diisopropylphenyl groups in the ligand toward the prochiral face of oxindole, leading to inferior enantioselectivity observed in the experiment.
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Affiliation(s)
- Cidan Lv
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, P. R. China
| | - Xiangxiang Meng
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, P. R. China
| | - Min Wang
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, P. R. China
| | - Yan Zhang
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, P. R. China
| | - Changwei Hu
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, P. R. China
| | - Chan Kyung Kim
- Department of Chemistry and Chemical Engineering, Inha University, 100 Inha-ro, Michuhol-gu, Incheon 22212, Korea
| | - Zhishan Su
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, P. R. China
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21
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Salahshoori I, Seyfaee A, Babapoor A, Neville F, Moreno-Atanasio R. Evaluation of the effect of silica nanoparticles, temperature and pressure on the performance of PSF/PEG/SiO2 mixed matrix membranes: A molecular dynamics simulation (MD) and design of experiments (DOE) study. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.115957] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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22
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Kojabad ME, Babaluo A, Tavakoli A. A novel semi-mobile carrier facilitated transport membrane containing aniline/poly (ether-block-amide) for CO2/N2 separation: Molecular simulation and experimental study. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.118494] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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23
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Maghami S, Sadeghi M, Baghersad S, Zornoza B. Influence of solvent, Lewis acid–base complex, and nanoparticles on the morphology and gas separation properties of polysulfone membranes. POLYM ENG SCI 2021. [DOI: 10.1002/pen.25708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Saeid Maghami
- Department of Chemical Engineering Isfahan University of Technology Isfahan Iran
| | - Morteza Sadeghi
- Department of Chemical Engineering Isfahan University of Technology Isfahan Iran
| | - Samaneh Baghersad
- Department of Chemical Engineering Isfahan University of Technology Isfahan Iran
| | - Beatriz Zornoza
- Department of Energy and Environment Instituto de Carboquímica‐ICB‐CSIC Zaragoza Spain
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24
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Asif K, Lock SSM, Taqvi SAA, Jusoh N, Yiin CL, Chin BLF, Loy ACM. A Molecular Simulation Study of Silica/Polysulfone Mixed Matrix Membrane for Mixed Gas Separation. Polymers (Basel) 2021; 13:polym13132199. [PMID: 34279343 PMCID: PMC8271399 DOI: 10.3390/polym13132199] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 06/27/2021] [Accepted: 06/28/2021] [Indexed: 01/08/2023] Open
Abstract
Polysulfone-based mixed matrix membranes (MMMs) incorporated with silica nanoparticles are a new generation material under ongoing research and development for gas separation. However, the attributes of a better-performing MMM cannot be precisely studied under experimental conditions. Thus, it requires an atomistic scale study to elucidate the separation performance of silica/polysulfone MMMs. As most of the research work and empirical models for gas transport properties have been limited to pure gas, a computational framework for molecular simulation is required to study the mixed gas transport properties in silica/polysulfone MMMs to reflect real membrane separation. In this work, Monte Carlo (MC) and molecular dynamics (MD) simulations were employed to study the solubility and diffusivity of CO2/CH4 with varying gas concentrations (i.e., 30% CO2/CH4, 50% CO2/CH4, and 70% CO2/CH4) and silica content (i.e., 15–30 wt.%). The accuracy of the simulated structures was validated with published literature, followed by the study of the gas transport properties at 308.15 K and 1 atm. Simulation results concluded an increase in the free volume with an increasing weight percentage of silica. It was also found that pure gas consistently exhibited higher gas transport properties when compared to mixed gas conditions. The results also showed a competitive gas transport performance for mixed gases, which is more apparent when CO2 increases. In this context, an increment in the permeation was observed for mixed gas with increasing gas concentrations (i.e., 70% CO2/CH4 > 50% CO2/CH4 > 30% CO2/CH4). The diffusivity, solubility, and permeability of the mixed gases were consistently increasing until 25 wt.%, followed by a decrease for 30 wt.% of silica. An empirical model based on a parallel resistance approach was developed by incorporating mathematical formulations for solubility and permeability. The model results were compared with simulation results to quantify the effect of mixed gas transport, which showed an 18% and 15% percentage error for the permeability and solubility, respectively, in comparison to the simulation data. This study provides a basis for future understanding of MMMs using molecular simulations and modeling techniques for mixed gas conditions that demonstrate real membrane separation.
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Affiliation(s)
- Khadija Asif
- CO2 Research Center (CO2 RES), Department of Chemical Engineering, Universiti Teknologi PETRONAS, Seri Iskandar 32610, Malaysia; (K.A.); (N.J.)
| | - Serene Sow Mun Lock
- CO2 Research Center (CO2 RES), Department of Chemical Engineering, Universiti Teknologi PETRONAS, Seri Iskandar 32610, Malaysia; (K.A.); (N.J.)
- Correspondence:
| | - Syed Ali Ammar Taqvi
- Department of Chemical Engineering, NED University of Engineering and Technology, Karachi 75270, Pakistan;
- Neurocomputation Lab, National Centre of Artificial Intelligence, NED University of Engineering and Technology, Karachi 75270, Pakistan
| | - Norwahyu Jusoh
- CO2 Research Center (CO2 RES), Department of Chemical Engineering, Universiti Teknologi PETRONAS, Seri Iskandar 32610, Malaysia; (K.A.); (N.J.)
| | - Chung Loong Yiin
- Department of Chemical Engineering and Energy Sustainability, Faculty of Engineering, Universiti Malaysia Sarawak (UNIMAS), Kota Samarahan 94300, Malaysia;
| | - Bridgid Lai Fui Chin
- Department of Chemical Engineering, Faculty of Engineering and Science, Sarawak Campus, Curtin University Malaysia, Miri 98009, Malaysia;
| | - Adrian Chun Minh Loy
- Department of Chemical Engineering, Monash University, Clayton, VIC 3800, Australia;
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25
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Tang C, Ding K, Liu Y, Yu S, Chen J, Feng X, Zhang C, Chen J. Quantitative relationship between the structures and properties of VOCs and SOA formation on the surfaces of acidic aerosol particles. Phys Chem Chem Phys 2021; 23:12360-12370. [PMID: 34027522 DOI: 10.1039/d1cp01428e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this research, all the efforts, based on a series of molecular dynamics simulations on the interfacial process between VOC-contaminated air and acidic sulfate, were made to find how the structures and properties of VOCs are related to the formation of SOAs. The experimental fractional aerosol coefficients (FACs) were used to quantify the SOA formation and 14 VOC species were chosen based on the atmosphere inventory and the FAC magnitude. Finally, the quantitative relationship (QR) was found through the FAC as a function of the two variables the total valid interactions (Tg) and the diffusion coefficient (D), with R square 0.94. Meanwhile, the effect of water was explored and the QR was proved to be rational and reliable. The QR not only explained the SOA formation capacity of VOCs, but could also predict the SOA formation of new molecules.
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Affiliation(s)
- Chunxue Tang
- Key Laboratory of Basic Chemistry of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu 610041, P. R. China.
| | - Keyi Ding
- Key Laboratory of Basic Chemistry of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu 610041, P. R. China.
| | - Yaoze Liu
- Key Laboratory of Basic Chemistry of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu 610041, P. R. China.
| | - Shengping Yu
- Key Laboratory of Basic Chemistry of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu 610041, P. R. China.
| | - Junhui Chen
- Sichuan Academy of Environmental Sciences, Chengdu, Sichuan 610064, China
| | - Xiaoqiong Feng
- Sichuan Academy of Environmental Sciences, Chengdu, Sichuan 610064, China
| | - Chunchun Zhang
- Analytical & Testing Center, Sichuan University, Chengdu, Sichuan 610064, P. R. China
| | - Junxian Chen
- Key Laboratory of Basic Chemistry of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu 610041, P. R. China.
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26
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Improvement efficiency of the of poly (ether-block-amide) -Cellulose acetate (Pebax-CA) blend by the addition of nanoparticles (MIL-53 and NH2-MIL-53): A molecular dynamics study. JOURNAL OF POLYMER RESEARCH 2021. [DOI: 10.1007/s10965-021-02577-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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27
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Wang D, Xin Y, Li X, Ning H, Wang Y, Yao D, Zheng Y, Meng Z, Yang Z, Pan Y, Li P, Wang H, He Z, Fan W. Transforming Metal-Organic Frameworks into Porous Liquids via a Covalent Linkage Strategy for CO 2 Capture. ACS APPLIED MATERIALS & INTERFACES 2021; 13:2600-2609. [PMID: 33403847 DOI: 10.1021/acsami.0c18707] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Porous liquids (PLs), an emerging kind of liquid materials with permanent porosity, have attracted increasing attention in gas capture. However, directly turning metal-organic frameworks (MOFs) into PLs via a covalent linkage surface engineering strategy has not been reported. Additionally, challenges including reducing the cost and simplifying the preparation process are daunting. Herein, we proposed a general method to transform Universitetet i Oslo (UiO)-66-OH MOFs into PLs by surface engineering with organosilane (OS) and oligomer species via covalent bonding linkage. The oligomer species endow UiO-66-OH with superior fluidity at room temperature. Meanwhile, the resulting PLs showed great potential in both CO2 adsorption and CO2/N2 selective separation. The residual porosity of PLs was verified by diverse characterizations and molecular simulations. Besides, CO2 selective capture sites were determined by grand canonical Monte Carlo (GCMC) simulation. Furthermore, the universality of the covalent linkage surface engineering strategy was confirmed using different classes of oligomer species and another MOF (ZIF-8-bearing amino groups). Notably, this strategy can be extended to construct other PLs by taking advantages of the rich library of oligomer species, thus making PLs promising candidates for further applications in energy and environment-related fields, such as gas capture, separation, and catalysis.
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Affiliation(s)
- Dechao Wang
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an 710129, P. R. China
| | - Yangyang Xin
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an 710129, P. R. China
| | - Xiaoqian Li
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an 710129, P. R. China
| | - Hailong Ning
- College of Chemistry and Chemical Engineering, Xi'an University of Science and Technology, Xi'an 710021, P. R. China
| | - Yudeng Wang
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an 710129, P. R. China
| | - Dongdong Yao
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an 710129, P. R. China
| | - Yaping Zheng
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an 710129, P. R. China
| | - Zhuoyue Meng
- College of Chemistry and Chemical Engineering, Xi'an University of Science and Technology, Xi'an 710021, P. R. China
| | - Zhiyuan Yang
- College of Chemistry and Chemical Engineering, Xi'an University of Science and Technology, Xi'an 710021, P. R. China
- Key Laboratory of Coal Resources Exploration and Comprehensive Utilization, Ministry of Natural Resources, Xi'an 710021, P. R. China
| | - Yuting Pan
- Queen Mary University of London Engineering School, Northwestern Polytechnical University, Xi'an, Shaanxi 710129, P. R. China
| | - Peipei Li
- School of Advanced Materials and Nanotechnology, Xidian University, Xi'an, Shaanxi 710071, P. R. China
| | - Hongni Wang
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an 710129, P. R. China
| | - Zhongjie He
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an 710129, P. R. China
| | - Wendi Fan
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an 710129, P. R. China
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28
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Bei P, Liu H, Zhang Y, Gao Y, Cai Z, Chen Y. Preparation and characterization of polyimide membranes modified by a task-specific ionic liquid based on Schiff base for CO 2/N 2 separation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:738-753. [PMID: 32827118 DOI: 10.1007/s11356-020-10533-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Accepted: 08/16/2020] [Indexed: 06/11/2023]
Abstract
In order to increase CO2/N2 selectivity of polyimide (PI) dense membranes, task-specific ionic liquid (TSIL), 1-aminoethyl-3-buthylimidazolium hexafluorophosphate ([NH2ebim][PF6]), has been grafted to polymer chains as large side groups by forming the structure of Schiff base for the first time. The modified membranes were characterized by Fourier transform infrared spectroscopy (FT-IR), elemental analysis, thermogravimetric analysis (TGA), X-ray diffraction (XRD), dynamic thermomechanical analysis (DMA), and stress-strain testing. The results showed that TSIL had been successfully linked to PI chains by forming "C=N." The modified membranes had more free volume, which was favorable to the improvement of CO2 permeability. The reduction of spin degree of freedom means the rigidity increment of polymer chains, which indicated that the selectivity of CO2/N2 can be enhanced. As a result, CO2 permeability of the modified membrane (TSIL-0.8 wt%) was increased from 5.28 to 10.2 Barrer, and CO2/N2 selectivity was increased from 21.9 to 92.8 at 30 °C and 0.1 MPa. Meanwhile, the effects of different feed pressures (0.1-0.6 MPa) and different operating temperatures (30-60 °C) on CO2/N2 transport properties were also investigated, and it was found that the separation performances of the modified membranes had already exceeded Robeson's upper bound.
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Affiliation(s)
- Pengzhi Bei
- School of Petrochemical Engineering, Shenyang University of Technology, Liaoyang, 111003, People's Republic of China
| | - Hongjing Liu
- School of Petrochemical Engineering, Shenyang University of Technology, Liaoyang, 111003, People's Republic of China.
| | - Ying Zhang
- School of Petrochemical Engineering, Shenyang University of Technology, Liaoyang, 111003, People's Republic of China
| | - Yingjia Gao
- School of Petrochemical Engineering, Shenyang University of Technology, Liaoyang, 111003, People's Republic of China
| | - Zhiqiang Cai
- School of Petrochemical Engineering, Shenyang University of Technology, Liaoyang, 111003, People's Republic of China
| | - Yanming Chen
- School of Petrochemical Engineering, Shenyang University of Technology, Liaoyang, 111003, People's Republic of China.
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29
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Lock SSM, Lau KK, Jusoh N, Shariff AM, Gan CH, Yiin CL. An atomistic simulation towards molecular design of silica polymorphs nanoparticles in polysulfone based mixed matrix membranes for
CO
2
/
CH
4
gas separation. POLYM ENG SCI 2020. [DOI: 10.1002/pen.25547] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Serene Sow Mun Lock
- CO2 Research Center (CO2RES), Department of Chemical Engineering Universiti Teknologi PETRONAS Seri Iskandar Perak Malaysia
| | - Kok Keong Lau
- CO2 Research Center (CO2RES), Department of Chemical Engineering Universiti Teknologi PETRONAS Seri Iskandar Perak Malaysia
| | - Norwahyu Jusoh
- CO2 Research Center (CO2RES), Department of Chemical Engineering Universiti Teknologi PETRONAS Seri Iskandar Perak Malaysia
| | - Azmi Mohd Shariff
- CO2 Research Center (CO2RES), Department of Chemical Engineering Universiti Teknologi PETRONAS Seri Iskandar Perak Malaysia
| | - Chin Heng Gan
- Department of Civil Engineering, Lee Kong Chian Faculty of Engineering and Science Universiti Tunku Abdul Rahman, Jalan Sungai Long, Bandar Sungai Long, Cheras Kajang Selangor Malaysia
| | - Chung Loong Yiin
- Department of Chemical Engineering and Energy Sustainability, Faculty of Engineering Universiti Malaysia Sarawak (UNIMAS) Kota Samarahan Sarawak Malaysia
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30
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Lock SSM, Lau KK, Jusoh N, Shariff AM, Yeong YF, Yiin CL, Ammar Taqvi SA. Physical property and gas transport studies of ultrathin polysulfone membrane from 298.15 to 328.15 K and 2 to 50 bar: atomistic molecular simulation and empirical modelling. RSC Adv 2020; 10:32370-32392. [PMID: 35516493 PMCID: PMC9056602 DOI: 10.1039/d0ra05836j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Accepted: 08/24/2020] [Indexed: 01/19/2023] Open
Abstract
Elucidation of ultrathin polymeric membrane at the laboratory scale is complicated at different operating conditions due to limitation of instruments to obtain in situ measurement data of membrane physical properties. This is essential since their effects are reversible. In addition, tedious experimental work is required to collect gas transport data at varying operating conditions. Recently, we have proposed a validated Soft Confining Methodology for Ultrathin Films that can be used to simulate ultrathin polysulfone (PSF) membranes upon confinement limited to 308.15 K and 2 bars. In industry application, these ultrathin membranes are operated within 298.15–328.15 K and up to 50 bars. Therefore, our proposed methodology using computational chemistry has been adapted to circumvent limitation in experimental study by simulating ultrathin PSF membranes upon confinement at different operating temperatures (298.15 to 328.15 K) and pressures (2 to 50 bar). The effect of operating parameters towards non-bonded and potential energy, free volume, specific volume and gas transport data (e.g. solubility and diffusivity) for oxygen and nitrogen of the ultrathin films has been simulated and collected using molecular simulation. Our previous empirical equations that have been confined to thickness dependent gas transport properties have been modified to accommodate the effect of operating parameters. The empirical equations are able to provide a good quantitative characterization with R2 ≥ 0.99 consistently, and are able to be interpolated to predict gas transport properties within the range of operating conditions. The modified empirical model can be utilized in process optimization studies to determine optimal membrane design for typical membrane specifications and operating parameters used in industrial applications. Pioneering work to elucidate and model the effect of operating conditions on physical and transport properties of ultrathin membranes.![]()
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Affiliation(s)
- S S M Lock
- CO2 Research Center (CO2RES), Department of Chemical Engineering, Universiti Teknologi PETRONAS 32610 Seri Iskandar Malaysia
| | - K K Lau
- CO2 Research Center (CO2RES), Department of Chemical Engineering, Universiti Teknologi PETRONAS 32610 Seri Iskandar Malaysia
| | - Norwahyu Jusoh
- CO2 Research Center (CO2RES), Department of Chemical Engineering, Universiti Teknologi PETRONAS 32610 Seri Iskandar Malaysia
| | - A M Shariff
- CO2 Research Center (CO2RES), Department of Chemical Engineering, Universiti Teknologi PETRONAS 32610 Seri Iskandar Malaysia
| | - Y F Yeong
- CO2 Research Center (CO2RES), Department of Chemical Engineering, Universiti Teknologi PETRONAS 32610 Seri Iskandar Malaysia
| | - Chung Loong Yiin
- Department of Chemical Engineering and Energy Sustainability, Faculty of Engineering, Universiti Malaysia Sarawak (UNIMAS) 94300 Kota Samarahan Sarawak Malaysia
| | - Syed Ali Ammar Taqvi
- Department of Chemical Engineering, NED University of Engineering and Technology Karachi 75270 Pakistan
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31
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Hatami A, Salahshoori I, Rashidi N, Nasirian D. The effect of ZIF-90 particle in Pebax/Psf composite membrane on the transport properties of CO2, CH4 and N2 gases by Molecular Dynamics Simulation method. Chin J Chem Eng 2020. [DOI: 10.1016/j.cjche.2019.12.011] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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32
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Li Q, Guo Y, Tong J, He H, Zhang X, Huo F. Development of a coarse-grained force field model of polymeric 1-vinyl-3-ethylimidazolium tetrafluoroborate ionic liquids. Chem Phys Lett 2020. [DOI: 10.1016/j.cplett.2020.137656] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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33
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Riasat Harami H, Dashti A, Ghahramani Pirsalami P, Bhatia SK, Ismail AF, Goh PS. Molecular Simulation and Computational Modeling of Gas Separation through Polycarbonate/ p-Nitroaniline/Zeolite 4A Mixed Matrix Membranes. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c02827] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
| | - Amir Dashti
- Young Researchers and Elites Club, Science and Research Branch, Islamic Azad University, Tehran 14778-93855, Iran
| | | | - Suresh K. Bhatia
- School of Chemical Engineering, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - A. F. Ismail
- Advanced Membrane Technology Research Centre (AMTEC), Universiti Teknologi Malaysia, Skudai 81310, Johor, Malaysia
| | - P. S. Goh
- Advanced Membrane Technology Research Centre (AMTEC), Universiti Teknologi Malaysia, Skudai 81310, Johor, Malaysia
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34
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Nematollahi M, Jalali-Arani A, Golzar K, Modarress H. Investigation of nanoparticle-polymer interaction in bio-based nanosilica-filled PLA/NR nanocomposites: molecular dynamics simulation. J Mol Model 2020; 26:230. [PMID: 32785857 DOI: 10.1007/s00894-020-04431-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Accepted: 05/27/2020] [Indexed: 01/13/2023]
Abstract
Molecular dynamics (MD) simulation, by employing the COMPASS force field, was utilized to investigate structural and thermal characteristics as well as interfacial interactions between components of nanocomposite consisting of poly(lactic acid) (PLA)/natural rubber (NR)/nanosilica, abbreviated as PSxN, where 1 ≤ x ≤ 7 and it represents the parts of SiO2 nanoparticles added to the PLA/NR (PN) blend. Analysis of the obtained results including density (ρ), fractional free volume (FFV), glass transition temperature (Tg), interaction energy (Einteraction), and radial distribution function (RDF) of these nanocomposites was performed. Comparing Einteraction of nanocomposites with that of the PN blend showed that the interactions between the chains of the two polymers are highly dependent on the added amounts of silica nanoparticles, so that by adding silica to the PN blend to obtain PS1N and PS3N nanocomposites, the amount of Einteraction was reduced to a smaller positive value, which indicates the tendency of the nanocomposite's components to interact with each other. By further addition of silica nanoparticles to have PS5N and PS7N nanocomposites and then by analysis of the RDF results, it was found that the nanoparticles were not well dispersed in these two nanocomposites and they were accumulated in the NR rubbery phase. Therefore, the percolation threshold for silica loading on the PN blend is at most 3 parts (x = 3). These results as well as the other obtained simulation results were compared with the available experimental data, and the agreement observed between them approved the simulation procedure and validated the obtained results.
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Affiliation(s)
- Mahsa Nematollahi
- Department of Polymer Engineering & Color Technology, Amirkabir University of Technology, No. 424, Hafez St., Tehran, Iran
| | - Azam Jalali-Arani
- Department of Polymer Engineering & Color Technology, Amirkabir University of Technology, No. 424, Hafez St., Tehran, Iran
| | - Karim Golzar
- Department of Chemical Engineering, Amirkabir University of Technology, No. 424, Hafez St., Tehran, Iran
| | - Hamid Modarress
- Department of Chemical Engineering, Amirkabir University of Technology, No. 424, Hafez St., Tehran, Iran.
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35
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Balçık M, Tantekin-Ersolmaz SB, Ahunbay MG. Interfacial analysis of mixed-matrix membranes under exposure to high-pressure CO2. J Memb Sci 2020. [DOI: 10.1016/j.memsci.2020.118147] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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36
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Lu L, Luo K, Yang W, Zhang S, Wang W, Xu H, Wu S. Insight into the anti-aging mechanisms of natural phenolic antioxidants in natural rubber composites using a screening strategy based on molecular simulation. RSC Adv 2020; 10:21318-21327. [PMID: 35518775 PMCID: PMC9054403 DOI: 10.1039/d0ra03425h] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Accepted: 05/19/2020] [Indexed: 12/05/2022] Open
Abstract
The failure of materials upon aging has led to the accumulation of waste and environmental pollution. Adding antioxidants (AOs) to the composites is one of the most effective ways to retard aging. However, traditional synthetic AOs are always detrimental to the environment and human health. The selection of antioxidants from streams by experiments will also definitely cost a lot of time and money. In addition, the complexity of thermo-oxidative aging factors along with the lack of quantitative tools significantly hampers its applications. So, building a screening strategy to quickly and easily find an appropriate and eco-friendly AO is imperative. In this study, we chose natural rubber (NR) as a matrix and provided a screening strategy based on diverse natural phenolic antioxidants to evaluate their ability in protecting NR composites. Thymol, α-tocopherol, and lipid-soluble epigallocatechin gallate (lsEGCG) were chosen from 18 natural phenolic antioxidants as potential alternative candidates. They were proved, indeed, to enhance the oxidative time in NR from experiments. Our results emphasized that thymol, α-tocopherol, and lsEGCG were promising alternatives for AOs in NR, and the in vitro toxicity test suggested that they are biocompatible. This study may develop a new strategy preference for screening the antioxidants by combining molecular simulation with the validation of experimental approaches, and therefore guide the AO molecular design with a more accurate theoretical prediction.
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Affiliation(s)
- Ling Lu
- State Key Laboratory of Organic-Inorganic composites, Beijing University of Chemical Technology Beijing 100029 P. R. China
| | - Kaiqiang Luo
- State Key Laboratory of Organic-Inorganic composites, Beijing University of Chemical Technology Beijing 100029 P. R. China
| | - Wei Yang
- Global Energy Interconnection Research Institute, State Key Laboratory of Advanced Power Transmission Technology Beijing 102211 P. R. China
| | - Sidian Zhang
- State Key Laboratory of Organic-Inorganic composites, Beijing University of Chemical Technology Beijing 100029 P. R. China
| | - Wencai Wang
- State Key Laboratory of Organic-Inorganic composites, Beijing University of Chemical Technology Beijing 100029 P. R. China
| | - Haiyan Xu
- Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, Peking Union Medical College Beijing 100005 P. R. China
| | - Sizhu Wu
- State Key Laboratory of Organic-Inorganic composites, Beijing University of Chemical Technology Beijing 100029 P. R. China
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37
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Wang D, Song S, Zhang W, He Z, Wang Y, Zheng Y, Yao D, Pan Y, Yang Z, Meng Z, Li Y. CO2 selective separation of Pebax-based mixed matrix membranes (MMMs) accelerated by silica nanoparticle organic hybrid materials (NOHMs). Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2020.116708] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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38
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Pazirofteh M, Abdolmajidi M, Samipoorgiri M, Dehghani M, Mohammadi AH. Separation and transport specification of a novel PEBA-1074/PEG-400/TiO2 nanocomposite membrane for light gas separation: Molecular simulation study. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.111268] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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39
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Cai F, You G, Zhao X, Hu H, Wu S. The Relationship between Specific Structure and Gas Permeability of Bromobutyl Rubber: A Combination of Experiments and Molecular Simulations. MACROMOL THEOR SIMUL 2019. [DOI: 10.1002/mats.201900025] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Fei Cai
- State Key Laboratory of Organic‐Inorganic CompositesBeijing University of Chemical Technology Beijing 100029 P. R. China
| | - Guohua You
- College of Information Science and TechnologyBeijing University of Chemical Technology Beijing 100029 China
| | - Xiuying Zhao
- State Key Laboratory of Organic‐Inorganic CompositesBeijing University of Chemical Technology Beijing 100029 P. R. China
| | - Haihua Hu
- Petrochemical Research Institute PetroChina, Gan Su Lanzhou 730060 P. R. China
| | - Sizhu Wu
- State Key Laboratory of Organic‐Inorganic CompositesBeijing University of Chemical Technology Beijing 100029 P. R. China
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40
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Cao R, Zhao X, Zhao X, Wu X, Li X, Zhang L. Bromination Modification of Butyl Rubber and Its Structure, Properties, and Application. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b03491] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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41
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Riasat Harami H, Riazi Fini F, Rezakazemi M, Shirazian S. Sorption in mixed matrix membranes: Experimental and molecular dynamic simulation and Grand Canonical Monte Carlo method. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.03.047] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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42
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Tirjoo A, Bayati B, Rezaei H, Rahmati M. Molecular dynamics simulation of the effect of ions in water on the asphaltene aggregation. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2018.12.067] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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43
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Wang Y, Yang Y, Tao M. Understanding Free Volume Characteristics of Ethylene-Propylene-Diene Monomer (EPDM) through Molecular Dynamics Simulations. MATERIALS 2019; 12:ma12040612. [PMID: 30781682 PMCID: PMC6416555 DOI: 10.3390/ma12040612] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Revised: 02/11/2019] [Accepted: 02/13/2019] [Indexed: 11/16/2022]
Abstract
Understanding the underlying processes associated with the viscoelasticity performance of ethylene-propylene-diene monomer (EPDM) during its service life is essential for assessing and predicting its waterproofing performance in underground infrastructure. The viscoelasticity of the polymer is closely related to its free volume, and both of these properties depend on multiple factors, such as temperature, stress magnitude, and strain level. To explore the fundamental viscoelastic behavior of EPDM using free volume as a proxy for viscoelasticity, this article investigates the influence of temperature, stress magnitude, and strain level, as well as their combined effect, on the free volume through molecular dynamics (MD) simulations. An EPDM cross-linked molecular model was built and verified by comparing the simulation values of glass transition temperature, mechanical properties, and gas diffusivity with the experimental results reported in the literature. Then, the dependence of EPDM's fractional free volume on temperature, strain, and their combined effect was investigated via MD simulations, on the basis of which the applicability of various superposition principles was also evaluated.
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Affiliation(s)
- Yajian Wang
- School of Engineering and Technology, China University of Geosciences (Beijing), 29 Xueyuan Road, Haidian District, Beijing 100083, China.
| | - Yuyou Yang
- School of Engineering and Technology, China University of Geosciences (Beijing), 29 Xueyuan Road, Haidian District, Beijing 100083, China.
| | - Mingjiang Tao
- Department of Civil and Environmental Engineering, Worcester Polytechnic Institute, Worcester, MA 01609, USA.
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44
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Zhou W, Wang H, Zhang Z, Chen H, Liu X. Molecular simulation of CO2/CH4/H2O competitive adsorption and diffusion in brown coal. RSC Adv 2019; 9:3004-3011. [PMID: 35518961 PMCID: PMC9059969 DOI: 10.1039/c8ra10243k] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Accepted: 01/17/2019] [Indexed: 11/22/2022] Open
Abstract
Carbon dioxide enhanced coalbed methane recovery (CO2-ECBM) has been proposed as a promising technology for the natural gas recovery enhancement as well as mitigation of CO2 emissions into the atmosphere. Adsorption and diffusion of CO2/CH4 mixture play key roles in predicting the performance of CO2-ECBM project, i.e., the production of coalbed methane as well as the geological sequestration potential of carbon dioxide. In the present work, the mechanism of competitive adsorption and diffusion of CO2/CH4/H2O mixture in brown coal were investigated by employing grand canonical Monte Carlo and molecular dynamics simulation. The effects of temperature and pressure on competitive adsorption and diffusion behaviours were explored. It is found that CO2 has much stronger adsorption ability on brown coal than CH4. The adsorption amounts of CO2/CH4 increase with pressure but have a decreasing trend with temperature. High adsorption selectivity of CO2/CH4 is observed with pressure lower than 0.1 MPa. In addition, the effects of moisture content in brown coal on the adsorption characteristics have been examined. Simulation results show that the adsorption capacities of CO2/CH4 are significantly suppressed in moist brown coal. The competitive adsorption of CO2/CH4/H2O follows the trend of H2O ≫ CO2 > CH4. Moreover, the results reveal that moisture content has great effects on the self-coefficients of CO2/CH4. Compared with dry coal, the self-diffusion coefficients of CO2 and CH4 reduce by 78.7% and 75.4% in brown coal with moisture content of 7.59 wt%, respectively. The microscopic insights provided in this study will be helpful to understand the competitive adsorption and diffusion mechanism of CO2/CH4/H2O in brown coal and offer some fundamental data for CO2-ECBM project. Competitive adsorption and diffusion behaviours of CO2/CH4/H2O in brown coal were explored by GCMC and MD simulations.![]()
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Affiliation(s)
- Wenning Zhou
- School of Energy and Environmental Engineering
- University of Science and Technology Beijing
- Beijing 100083
- China
- Beijing Key Laboratory of Energy Saving and Emission Reduction for Metallurgical Industry
| | - Haobo Wang
- School of Energy and Environmental Engineering
- University of Science and Technology Beijing
- Beijing 100083
- China
| | - Zhe Zhang
- School of Energy and Environmental Engineering
- University of Science and Technology Beijing
- Beijing 100083
- China
| | - Hongxia Chen
- The Beijing Key Laboratory of Multiphase Flow and Heat Transfer
- North China Electric Power University
- Beijing 102206
- China
| | - Xunliang Liu
- School of Energy and Environmental Engineering
- University of Science and Technology Beijing
- Beijing 100083
- China
- Beijing Key Laboratory of Energy Saving and Emission Reduction for Metallurgical Industry
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45
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Zhang B, Cao X, Zhou G, Zhao N. Anomalous diffusion of polystyrene from an attractive substrate based on all-atom simulation. Phys Chem Chem Phys 2018; 20:25304-25313. [PMID: 30255884 DOI: 10.1039/c8cp04177f] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The diffusion of polystyrene (PS) polymer chains from a hydroxy (-OH)-terminated Si surface with different grafting densities φG is studied based on all-atom simulation. Our particular attention is paid to the impact of the attractive substrate on the diffusive and configurational properties of PS. Our simulation results uncover a very novel and unexpected modification to polymer diffusion with the increment of φG, namely, the diffusion is slowed down most significantly from a substrate with moderate grafting densities, while in lower or full grafting cases, the diffusive dynamics is even facilitated rather than retarded. The underlying mechanism is investigated in terms of energy and conformational change in detail. Surprisingly, we obtain a consistent scenario for diffusion. Under moderate grafting densities, the energy required to be overcome for diffusion is relatively large. In addition, PS chains are more likely to be in a stretched configuration subject to a slower relaxation. These facts can account for the hindered diffusion. While under lower or full grafting densities, the energy required for diffusion becomes even smaller than the ungrafted situation. Also, PS chains prefer a shrinking configuration undergoing faster relaxation. Consequently, the diffusion of PS is reasonably promoted.
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Affiliation(s)
- Bingjie Zhang
- College of Chemistry, Sichuan University, Chengdu 610064, China.
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46
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Dashti A, Asghari M, Dehghani M, Rezakazemi M, Mohammadi AH, Bhatia SK. Molecular dynamics, grand canonical Monte Carlo and expert simulations and modeling of water–acetic acid pervaporation using polyvinyl alcohol/tetraethyl orthosilicates membrane. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2018.05.078] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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47
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Chitosan-based hydrogels: Preparation, properties and applications. Int J Biol Macromol 2018; 115:194-220. [DOI: 10.1016/j.ijbiomac.2018.04.034] [Citation(s) in RCA: 163] [Impact Index Per Article: 27.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2018] [Revised: 03/18/2018] [Accepted: 04/08/2018] [Indexed: 12/18/2022]
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48
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Khezri A, Karimi A, Yazdian F, Jokar M, Mofradnia SR, Rashedi H, Tavakoli Z. Molecular dynamic of curcumin/chitosan interaction using a computational molecular approach: Emphasis on biofilm reduction. Int J Biol Macromol 2018; 114:972-978. [DOI: 10.1016/j.ijbiomac.2018.03.100] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2018] [Revised: 03/09/2018] [Accepted: 03/19/2018] [Indexed: 10/17/2022]
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49
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Golzar K, Modarress H, Amjad-Iranagh S. Separation of gases by using pristine, composite and nanocomposite polymeric membranes: A molecular dynamics simulation study. J Memb Sci 2017. [DOI: 10.1016/j.memsci.2017.06.010] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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50
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Jiang C, Hou Y, Wang N, Li L, Lin L, Niu QJ. Propylene/propane separation by porous graphene membrane: Molecular dynamic simulation and first-principle calculation. J Taiwan Inst Chem Eng 2017. [DOI: 10.1016/j.jtice.2017.06.004] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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