1
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A predictive procedure to model gas transport and intrinsic properties of rubbery polymeric membranes using equilibrium thermodynamics and free volume theory. JOURNAL OF POLYMER RESEARCH 2023. [DOI: 10.1007/s10965-023-03482-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
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2
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Mao YF, Long SN, Li Z, Tao WQ. Diffusion Behavior of VOC Molecules in Polyvinyl Chloride Investigated by Molecular Dynamics Simulation. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:3235. [PMID: 36833929 PMCID: PMC9963140 DOI: 10.3390/ijerph20043235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/01/2023] [Revised: 02/07/2023] [Accepted: 02/10/2023] [Indexed: 06/18/2023]
Abstract
Due to the threats posed by many volatile organic compounds (VOCs) to human health in indoor spaces via air, the mass transfer characteristics of VOCs are of critical importance to the study of their mechanism and control. As a significant part of the mass transfer process, diffusion widely exists in emissions from floors (e.g., PVC floors) and in sorption in porous materials. Molecular simulation studies by can provide unparalleled insights into the molecular mechanisms of VOCs. We construct the detailed atomistic structures of PVC blend membranes to investigate the diffusion behavior of VOC molecules (n-hexane) in PVC by molecular dynamics (MD). The variation in the diffusion coefficient of n-hexane in PVC with respect to temperature is in line with Arrhenius' law. The effect of temperature on the diffusion mechanism was investigated from the perspectives of free volume, cavity distribution and polymer chain mobility. It was found that the relationships between the diffusion coefficients of n-hexane in the polymer and the inverse fractional free volume are exponential and agree well with the free volume theory. Hopefully, this study will offer quantitative insights into the mass transport phenomena of VOCs within polymeric materials.
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Affiliation(s)
- Yun-Feng Mao
- School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
- State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai 200092, China
| | - Shun-Nan Long
- School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Zhuo Li
- State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai 200092, China
| | - Wen-Quan Tao
- State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai 200092, China
- Key Laboratory of Thermo-Fluid Science and Engineering of MOE, School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an 710049, China
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3
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Molecular Dynamics Simulation of Oxidative Aging Effect on Diffusion Behaviors of Oxygen and Cyclohexane in NBR. Polymers (Basel) 2022; 14:polym14102060. [PMID: 35631942 PMCID: PMC9145491 DOI: 10.3390/polym14102060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Revised: 05/10/2022] [Accepted: 05/11/2022] [Indexed: 12/05/2022] Open
Abstract
The influences of thermal-oxidative aging on the diffusion behaviors of oxygen and cyclohexane in nitrile-butadiene rubber (NBR) at the micro-scale were investigated by molecular dynamics (MD) simulation. The two types of aged rubber models were established on the basis of rubber oxidative chains modified by the introduction of hydroxyl groups and carbonyl groups in rubber chains. The diffusion behaviors of oxygen and cyclohexane in NBR under different conditions were characterized by the fractional free volume (FFV), mean square displacement (MSD), diffusion coefficients, and diffusion trajectory. It turns out that the elevated temperature contributed to the increase in the free volume and diffusion range of oxygen and cyclohexane, while the compressive stress showed the reverse influence. Additionally, the introduction of oxidative polar functional groups (hydroxyl groups and carbonyl groups) in rubber chains lowered the flexibility of the rubber chains and promoted the formation of strong polar interaction, which further inhibits the diffusion of oxygen and cyclohexane.
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4
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Varghese P. J G, David DA, Karuth A, Manamkeri Jafferali JF, P. M SB, George JJ, Rasulev B, Raghavan P. Experimental and Simulation Studies on Nonwoven Polypropylene-Nitrile Rubber Blend: Recycling of Medical Face Masks to an Engineering Product. ACS OMEGA 2022; 7:4791-4803. [PMID: 35187299 PMCID: PMC8851451 DOI: 10.1021/acsomega.1c04913] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Accepted: 12/08/2021] [Indexed: 05/05/2023]
Abstract
The battle against the COVID-19 pandemic counters the waste management system, as billions of single-use face masks are used per day all over the world. Proper disposal of used face masks without jeopardizing the health and the environment is a challenge. Herein, a novel method for recycling of medical face masks has been studied. This method incorporates the nonwoven polypropylene (PP) fiber, which is taken off from the mask after disinfecting it, with acrylonitrile butadiene rubber (NBR) using maleic anhydride as the compatibilizer, which results in a PP-NBR blend with a high percentage economy. The PP-NBR blends show enhanced thermomechanical properties among which, 70 wt % PP content shows superior properties compared to other composites with 40, 50, and 60 wt % of PP. The fully Atomistic simulation of PP-NBR blend with compatibilizer shows an improved tensile and barrier properties, which is in good agreement with the experimental studies. The molecular dynamics simulation confirms that the compatibility between non-polar PP and polar NBR phases are vitally important for increasing the interfacial adhesion and impeding the phase separation.
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Affiliation(s)
- George Varghese P. J
- Department
of Metallurgical and Materials Engineering, Indian Institute of Technology Patna (IIT P), Patna 801106, Bihar, India
- Materials
Science and NanoEngineering Lab, Department of Polymer Science and
Rubber Technology, Cochin University of
Science and Technology (CUSAT), Kochi 682022, Kerala, India
| | - Deepthi Anna David
- Materials
Science and NanoEngineering Lab, Department of Polymer Science and
Rubber Technology, Cochin University of
Science and Technology (CUSAT), Kochi 682022, Kerala, India
- Department
of Applied Chemistry, Cochin University
of Science and Technology (CUSAT), Kochi 682022, Kerala, India
| | - Anas Karuth
- Department
of Coatings and Polymeric Materials, North Dakota State University, Fargo, North Dakota 58105, United States
| | - Jabeen Fatima Manamkeri Jafferali
- Materials
Science and NanoEngineering Lab, Department of Polymer Science and
Rubber Technology, Cochin University of
Science and Technology (CUSAT), Kochi 682022, Kerala, India
| | - Sabura Begum P. M
- Department
of Applied Chemistry, Cochin University
of Science and Technology (CUSAT), Kochi 682022, Kerala, India
| | - Jinu Jacob George
- Materials
Science and NanoEngineering Lab, Department of Polymer Science and
Rubber Technology, Cochin University of
Science and Technology (CUSAT), Kochi 682022, Kerala, India
| | - Bakhtiyor Rasulev
- Department
of Coatings and Polymeric Materials, North Dakota State University, Fargo, North Dakota 58105, United States
| | - Prasanth Raghavan
- Materials
Science and NanoEngineering Lab, Department of Polymer Science and
Rubber Technology, Cochin University of
Science and Technology (CUSAT), Kochi 682022, Kerala, India
- Department
of Materials Engineering and Convergence Technology, Gyeongsang National University, 501 Jinju-daero, Jinju 52828, Republic of Korea
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5
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Yang J, Lou W. Molecule Dynamics Simulation of the Effect of Oxidative Aging on Properties of Nitrile Rubber. Polymers (Basel) 2022; 14:226. [PMID: 35054633 PMCID: PMC8778742 DOI: 10.3390/polym14020226] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 12/31/2021] [Accepted: 01/04/2022] [Indexed: 12/04/2022] Open
Abstract
The effects of oxidative aging on the static and dynamic properties of nitrile rubber at the molecular scale were investigated by molecular dynamics simulation. The aged nitrile rubber models were constructed by introducing hydroxyl groups and carbonyl groups into rubber molecular chains to mimic oxidative aging. The static and dynamic properties of the unaged and aged nitrile rubber under different conditions were evaluated by mean square displacement, self-diffusion coefficients, hydrogen bond, fractional free volume, radial distribution function, cohesive energy density and solubility parameter. The results show that the elevated temperature intensified significantly the mobility of rubber molecular chains and fractional free volume, while the compressive strain displayed the opposite effect resulting in packing and rearrangement of rubber chains. The introduction of hydroxyl groups and carbonyl groups enhanced the polarity, intermolecular interactions, the volume and rigidity of molecular chains, implying weaker mobility of molecular chains as compared to unaged models. The compressive strain and oxidative aging both decreased the fractional free volume, which inhibited gaseous and liquid diffusion into the rubber materials, and slowed down the oxidative aging rate. This study provides insights to better understand the effect of molecular changes due to oxidative aging on the structural and dynamic properties of rubber materials at the molecular level.
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Affiliation(s)
- Jinsong Yang
- School of Traffic and Transportation Engineering, Central South University, Changsha 410075, China;
| | - Weitao Lou
- Graduate School of China Academy of Engineering Physics, Beijing 100193, China
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6
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Lakmehsari MS, Yeganegi S, Matta CF, Ghandi K, Ziaie F. The diffusion of light gases through polyvinyl butyral: Molecular hydrogen, helium, and neon. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2021.118245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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7
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Guha RD, Idolor O, Berkowitz K, Pasquinelli M, Grace LR. Exploring secondary interactions and the role of temperature in moisture-contaminated polymer networks through molecular simulations. SOFT MATTER 2021; 17:2942-2956. [PMID: 33589893 DOI: 10.1039/d0sm02009e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Leveraging the state of absorbed moisture within a polymer network to identify physical and chemical features of the host material is predicated upon a clear understanding of the interaction between the polymer and a penetrant water molecule; an understanding that has remained elusive. Recent work has revealed that a novel damage detection method that exploits the very low baseline levels of water typically found in polymer matrix composites (PMC) may be a valuable tool in the composite NDE arsenal, provided that a clear understanding of polymer-water interaction can be obtained. Precise detection, location, and possible quantification of the extent of damage can be performed by characterizing the physical and chemical states of moisture present in an in-service PMC. Composite structures have a locally elevated dielectric constant near the damage sites due to a higher fraction of bulk ("free") water, which has a higher dielectric constant when compared to water molecules bound to the polymer network through secondary bonding interactions. In this study, we aim to get a clear atomistic scale picture of the interactions which drive the dielectric signature variations necessary for tracking damage. Molecular Dynamics (MD) simulations were used to explore the effect of temperature on the state of moisture in two epoxy matrices with identical chemical constituents but different morphologies. The motivation was to understand whether higher polarity binds a greater fraction of moisture even at higher temperatures, leading to suppressed dielectric activity. Consequently, the influence of secondary bonding interactions was investigated to understand the impact of temperature on the absorbed water molecules in a composite epoxy matrix.
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Affiliation(s)
- Rishabh D Guha
- Department of Mechanical and Aerospace Engineering, North Carolina State University, Engineering Building-III, 911 Oval Drive, Raleigh, NC-27695, USA.
| | - Ogheneovo Idolor
- Department of Mechanical and Aerospace Engineering, North Carolina State University, Engineering Building-III, 911 Oval Drive, Raleigh, NC-27695, USA.
| | - Katherine Berkowitz
- Department of Mechanical and Aerospace Engineering, North Carolina State University, Engineering Building-III, 911 Oval Drive, Raleigh, NC-27695, USA.
| | - Melissa Pasquinelli
- Department of Forest Biomaterials, College of Natural Resources, North Carolina State University, Biltmore Hall, 2820 Faucette Drive, Raleigh, NC-27606, USA
| | - Landon R Grace
- Department of Mechanical and Aerospace Engineering, North Carolina State University, Engineering Building-III, 911 Oval Drive, Raleigh, NC-27695, USA.
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8
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Tan J, Chen C, Wu J, He R, Jiang L, Liu Y. Influence of ultraviolet aging on the structure, mechanical and gas permeability properties of hydrogenated nitrile butadiene rubber. J Appl Polym Sci 2021. [DOI: 10.1002/app.50543] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Jinghua Tan
- National and Local Joint Engineering Center of Advanced Packaging Materials R & D Technology, Key Laboratory of Advanced Packaging Materials and Technology of Hunan Province, School of Packaging and Materials Engineering Hunan University of Technology Zhuzhou China
| | - Chengliang Chen
- National and Local Joint Engineering Center of Advanced Packaging Materials R & D Technology, Key Laboratory of Advanced Packaging Materials and Technology of Hunan Province, School of Packaging and Materials Engineering Hunan University of Technology Zhuzhou China
| | - Juying Wu
- Institute of Systems and Engineering China Academy of Engineering Physics Mianyang China
| | - Ren He
- Institute of Systems and Engineering China Academy of Engineering Physics Mianyang China
| | - Linbing Jiang
- National and Local Joint Engineering Center of Advanced Packaging Materials R & D Technology, Key Laboratory of Advanced Packaging Materials and Technology of Hunan Province, School of Packaging and Materials Engineering Hunan University of Technology Zhuzhou China
| | - Yiwu Liu
- National and Local Joint Engineering Center of Advanced Packaging Materials R & D Technology, Key Laboratory of Advanced Packaging Materials and Technology of Hunan Province, School of Packaging and Materials Engineering Hunan University of Technology Zhuzhou China
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9
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Tan JH, Chen CL, Liu YW, Wu JY, Wu D, Zhang X, She ZH, He R, Zhang HL. Molecular simulations of gas transport in hydrogenated nitrile butadiene rubber. JOURNAL OF POLYMER RESEARCH 2020. [DOI: 10.1007/s10965-020-02258-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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10
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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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11
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Wang X, Chen X, Song M, Wang Q, Zheng W, Song H, Fan Z, Myat Thu A. Effects of Hindered Phenol Organic Molecules on Enhancing Thermo-Oxidative Resistance and Damping Capacity for Nitrile Butadiene Rubber: Insights from Experiments and Molecular Simulation. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c00528] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xiujuan Wang
- Key Laboratory of Rubber-Plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber-plastics, Qingdao University of Science & Technology, Qingdao 266042, P. R. China
| | - Xinghao Chen
- Key Laboratory of Rubber-Plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber-plastics, Qingdao University of Science & Technology, Qingdao 266042, P. R. China
| | - Meng Song
- School of Materials and Chemical Engineering, Zhongyuan University of Technology, Zhengzhou 450007, P. R. China
| | - Qingfu Wang
- Key Laboratory of Rubber-Plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber-plastics, Qingdao University of Science & Technology, Qingdao 266042, P. R. China
| | - Wei Zheng
- School of International Education, Beijing University of Chemical Technology, Beijing 102202, P. R. China
| | - Hongjie Song
- Key Laboratory of Rubber-Plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber-plastics, Qingdao University of Science & Technology, Qingdao 266042, P. R. China
| | - Zehao Fan
- Key Laboratory of Rubber-Plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber-plastics, Qingdao University of Science & Technology, Qingdao 266042, P. R. China
| | - Aung Myat Thu
- Key Laboratory of Rubber-Plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber-plastics, Qingdao University of Science & Technology, Qingdao 266042, P. R. China
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12
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Tan J, Chen C, Liu Y, Wu J, Wu D, Zhang X, He X, She Z, He R, Zhang H. Molecular simulations of gas transport in hydrogenated nitrile butadiene rubber and ethylene-propylene-diene rubber. RSC Adv 2020; 10:12475-12484. [PMID: 35497587 PMCID: PMC9051154 DOI: 10.1039/d0ra00192a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Accepted: 03/16/2020] [Indexed: 11/25/2022] Open
Abstract
Diffusion and sorption of five gases (H2, N2, O2, CO2, CH4) in hydrogenated nitrile butadiene rubber (HNBR) and ethylene–propylene–diene rubber (EPDM) have been investigated by molecular dynamics (MD) and grand canonical Monte Carlo (GCMC) simulations. The diffusion coefficients of gas molecules in HNBR and EPDM are well correlated with the effective penetrant diameter except for CO2. CO2 shows a lower diffusion coefficient due to its linear shape. Additionally, the favorable interaction between CO2 and HNBR is another factor for its lower diffusion coefficient in HNBR. HNBR shows lower diffusion coefficients than EPDM. This is because the polar –CN groups in HNBR chains increase interchain cohesion and result in tight intermolecular packing, low free volume and poor chain mobility, which decreases the diffusion coefficients of HNBR. The solubility coefficients of CH4, O2, N2 and H2 in HNBR are lower than those in EPDM, which is a result of the weak HNBR–penetrant interactions and low free volume of HNBR. However, the solubility coefficient of CO2 in HNBR is higher than in EPDM. This is attributed to the strong interaction between CO2 and HNBR. H2, O2, N2 and CH4 show lower permeability coefficients in HNBR than in EPDM, while CO2 has higher permeability coefficients in HNBR. These molecular details provide critical information for the understanding of structures and gas transport between HNBR and EPDM. Diffusion and sorption of five gases (H2, N2, O2, CO2, CH4) in HNBR and EPDM were explored by MD and GCMC simulations.![]()
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Affiliation(s)
- JingHua Tan
- Key Laboratory of Advanced Packaging Materials and Technology of Hunan Province, School of Packaging and Materials Engineering, Hunan University of Technology Zhuzhou 412007 P. R. China
| | - Chenliang Chen
- Key Laboratory of Advanced Packaging Materials and Technology of Hunan Province, School of Packaging and Materials Engineering, Hunan University of Technology Zhuzhou 412007 P. R. China
| | - Yiwu Liu
- Key Laboratory of Advanced Packaging Materials and Technology of Hunan Province, School of Packaging and Materials Engineering, Hunan University of Technology Zhuzhou 412007 P. R. China
| | - Juying Wu
- Institute of Systems and Engineering, China Academy of Engineering Physics Mianyang 621000 P. R. China
| | - Ding Wu
- Key Laboratory of Advanced Packaging Materials and Technology of Hunan Province, School of Packaging and Materials Engineering, Hunan University of Technology Zhuzhou 412007 P. R. China
| | - Xiang Zhang
- Key Laboratory of Advanced Packaging Materials and Technology of Hunan Province, School of Packaging and Materials Engineering, Hunan University of Technology Zhuzhou 412007 P. R. China
| | - Xiaoye He
- Key Laboratory of Polymeric Materials and Application Technology of Hunan Province, Key Laboratory of Advanced Functional Polymer Materials of Colleges, Universities of Hunan Province, College of Chemistry, Xiangtan University Xiangtan 411105 P. R. China
| | - Zhihong She
- Key Laboratory of Advanced Packaging Materials and Technology of Hunan Province, School of Packaging and Materials Engineering, Hunan University of Technology Zhuzhou 412007 P. R. China
| | - Ren He
- Institute of Systems and Engineering, China Academy of Engineering Physics Mianyang 621000 P. R. China
| | - Hailiang Zhang
- Key Laboratory of Polymeric Materials and Application Technology of Hunan Province, Key Laboratory of Advanced Functional Polymer Materials of Colleges, Universities of Hunan Province, College of Chemistry, Xiangtan University Xiangtan 411105 P. R. China
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13
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Gołębiowski JR, Kermode JR, Haynes PD, Mostofi AA. Atomistic QM/MM simulations of the strength of covalent interfaces in carbon nanotube–polymer composites. Phys Chem Chem Phys 2020; 22:12007-12014. [DOI: 10.1039/d0cp01841d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
We use a QM/MM approach to simulate CNT pull-out from crosslinked polyethylene studying how interfacial strength depends on its chemistry.
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Affiliation(s)
- Jacek R. Gołębiowski
- Department of Materials
- Imperial College London
- London SW7 2AZ
- UK
- Thomas Young Centre for Theory and Simulation of Materials
| | - James R. Kermode
- Warwick Centre for Predictive Modelling
- School of Engineering
- University of Warwick
- Coventry
- UK
| | - Peter D. Haynes
- Department of Materials
- Imperial College London
- London SW7 2AZ
- UK
- Thomas Young Centre for Theory and Simulation of Materials
| | - Arash A. Mostofi
- Department of Materials
- Imperial College London
- London SW7 2AZ
- UK
- Thomas Young Centre for Theory and Simulation of Materials
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14
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Luo M, Putnam ZA, Incavo J, Huang MY, McLaughlin JB, Krishnan S. Molecular Simulations and Experimental Characterization of Fluorinated Nitrile Butadiene Elastomers with Low H2S Permeability. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b02445] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | | | - Joseph Incavo
- Baker Hughes, a GE Company, Houston, Texas 77032, United States
| | - Ming Y. Huang
- Baker Hughes, a GE Company, Houston, Texas 77032, United States
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15
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Zhi J, Wang Q, Zhang M, Li M, Jia Y. Coupled analysis on heterogeneous oxidative aging and viscoelastic performance of rubber based on multi-scale simulation. J Appl Polym Sci 2019. [DOI: 10.1002/app.47452] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Jieying Zhi
- Key Laboratory for Liquid-solid Structural Evolution and Processing of Materials (Ministry of Education); Shandong University; Jinan 250061 China
| | - Qinglin Wang
- Key Laboratory for Liquid-solid Structural Evolution and Processing of Materials (Ministry of Education); Shandong University; Jinan 250061 China
| | - Mengjie Zhang
- Key Laboratory for Liquid-solid Structural Evolution and Processing of Materials (Ministry of Education); Shandong University; Jinan 250061 China
| | - Manjia Li
- Key Laboratory for Liquid-solid Structural Evolution and Processing of Materials (Ministry of Education); Shandong University; Jinan 250061 China
| | - Yuxi Jia
- Key Laboratory for Liquid-solid Structural Evolution and Processing of Materials (Ministry of Education); Shandong University; Jinan 250061 China
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16
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Saha S, Bhowmick AK. An Insight into molecular structure and properties of flexible amorphous polymers: A molecular dynamics simulation approach. J Appl Polym Sci 2019. [DOI: 10.1002/app.47457] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Subhabrata Saha
- Rubber Technology Centre; Indian Institute of Technology; Kharagpur 721 302 India
| | - Anil K. Bhowmick
- Rubber Technology Centre; Indian Institute of Technology; Kharagpur 721 302 India
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17
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Chaube S, Mishra S, Maiti S, Rai B. Multiscale analysis of large-strain deformation behaviour of random cross-linked elastomers. MOLECULAR SIMULATION 2018. [DOI: 10.1080/08927022.2018.1538559] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Suryanaman Chaube
- Physical Science Research Area, TCS Research, Tata Research Development and Design Centre, Pune, India
| | - Shashank Mishra
- Physical Science Research Area, TCS Research, Tata Research Development and Design Centre, Pune, India
| | - Soumyadipta Maiti
- Physical Science Research Area, TCS Research, Tata Research Development and Design Centre, Pune, India
| | - Beena Rai
- Physical Science Research Area, TCS Research, Tata Research Development and Design Centre, Pune, India
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18
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Molinari N, Sutton AP, Mostofi AA. Mechanisms of reinforcement in polymer nanocomposites. Phys Chem Chem Phys 2018; 20:23085-23094. [DOI: 10.1039/c8cp03281e] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Qualitatively different stress–strain responses of polymer nanocomposites are shown to result from the dynamical evolution of three principal molecular structural motifs in the polymer–filler network.
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Affiliation(s)
- N. Molinari
- Department of Physics and the Thomas Young Centre for Theory and Simulation of Materials
- Imperial College London
- London SW7 2AZ
- UK
| | - A. P. Sutton
- Department of Physics and the Thomas Young Centre for Theory and Simulation of Materials
- Imperial College London
- London SW7 2AZ
- UK
| | - A. A. Mostofi
- Department of Physics and the Thomas Young Centre for Theory and Simulation of Materials
- Imperial College London
- London SW7 2AZ
- UK
- Department of Materials and the Thomas Young Centre for Theory and Simulation of Materials
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19
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Khawaja M, Sutton AP, Mostofi AA. Molecular Simulation of Gas Solubility in Nitrile Butadiene Rubber. J Phys Chem B 2016; 121:287-297. [PMID: 27997196 DOI: 10.1021/acs.jpcb.6b09690] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Molecular simulation is used to compute the solubility of small gases in nitrile butadiene rubber (NBR) with a Widom particle-insertion technique biased by local free volume. The convergence of the method is examined as a function of the number of snapshots upon which the insertions are performed and the number of insertions per snapshot and is compared to the convergence of the unbiased Widom insertion technique. The effect of varying the definition of local free volume is also investigated. The acrylonitrile content of the polymer is altered to examine its influence on the solubility of helium, CO2, and H2O, and the solubilities of polar gases are found to be enhanced relative to those of nonpolar gases, in qualitative agreement with experiment. To probe this phenomenon further, the solubilities are decomposed into contributions from the neighborhoods of different atoms, using a Voronoi cell construction, and a strong bias is found for CO2 and H2O in particular to be situated near nitrogen sites in the elastomer. Temperature is shown to suppress the solubility of CO2 and H2O but to increase that of helium. Increasing pressure is found to suppress the solubility of all gases but at different rates, according to a balance between their molecular sizes and electrostatic interactions with the polymer. These results are relevant to the use of NBR seals at elevated temperatures and pressures, such as in oil and gas wells.
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Affiliation(s)
- M Khawaja
- Department of Physics and ‡Department of Materials, and the Thomas Young Centre for Theory and Simulation of Materials, Imperial College London , London SW7 2AZ, U.K
| | - A P Sutton
- Department of Physics and ‡Department of Materials, and the Thomas Young Centre for Theory and Simulation of Materials, Imperial College London , London SW7 2AZ, U.K
| | - A A Mostofi
- Department of Physics and ‡Department of Materials, and the Thomas Young Centre for Theory and Simulation of Materials, Imperial College London , London SW7 2AZ, U.K
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Molinari N, Khawaja M, Sutton AP, Mostofi AA. Molecular Model for HNBR with Tunable Cross-Link Density. J Phys Chem B 2016; 120:12700-12707. [DOI: 10.1021/acs.jpcb.6b07841] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- N. Molinari
- Department of Physics and ‡Department of Materials, and the Thomas Young Centre for Theory and Simulation of Materials, Imperial College London, London SW7 2AZ, U.K
| | - M. Khawaja
- Department of Physics and ‡Department of Materials, and the Thomas Young Centre for Theory and Simulation of Materials, Imperial College London, London SW7 2AZ, U.K
| | - A. P. Sutton
- Department of Physics and ‡Department of Materials, and the Thomas Young Centre for Theory and Simulation of Materials, Imperial College London, London SW7 2AZ, U.K
| | - A. A. Mostofi
- Department of Physics and ‡Department of Materials, and the Thomas Young Centre for Theory and Simulation of Materials, Imperial College London, London SW7 2AZ, U.K
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21
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Pei L, Chi J, Zhang L. Transport behavior of R134a refrigerant through rubber composites. JOURNAL OF POLYMER RESEARCH 2015. [DOI: 10.1007/s10965-015-0764-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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22
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A new approach of synthesis and morphological control of poly(ethylene terephthalate)-g-polyacrylonitrile composite film with a porous surface. Radiat Phys Chem Oxf Engl 1993 2015. [DOI: 10.1016/j.radphyschem.2014.08.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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23
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A study on the relationship between polycarbonate microstructure and performance as determined by a combined experimental and molecular dynamics simulation method. E-POLYMERS 2014. [DOI: 10.1515/epoly-2014-0065] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractThe influence of the microstructure of polycarbonate (PC) on performance was systematically investigated by both experimental method and molecular simulation. Yield stress, impact strength, molecular weight, and transmittance were used to distinguish the degradation processes between different PCs, and thermal degradation kinetics was studied to obtain the activation energy. At the molecular level, through 13C nuclear magnetic resonance (NMR) spectroscopy, it was observed that PCs have a more polar group of benzene rings, resulting in the high density, dielectric constant, and tensile modulus. Meanwhile, molecular dynamics (MD) simulation was employed under a polymer consistent force field force field. Specific volume and mechanical property were analyzed to investigate the thermodynamic property. The molecular dynamics simulation and experimental results on half decomposition temperature (T1/2), refraction index, flow activation energy, average density, cohesive energy density, glass transition temperature (Tg), and elastic modulus had good agreement. Therefore, it was indicated that the molecular simulation could successfully study the characteristics and properties. The fundamental studies would be expected to supply useful information for designing materials and optimizing processing technology.
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Li Y, Wu Y, Zhang L, Wang X, Ren D, Wu S. Molecular dynamics simulation of diffusion behavior of cyclohexane in natural rubber during reclamation. J Appl Polym Sci 2014. [DOI: 10.1002/app.40347] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Yi Li
- State Key Laboratory of Organic-Inorganic Composites; Beijing University of Chemical Technology; Beijing 100029 People's Republic of China
| | - Youping Wu
- State Key Laboratory of Organic-Inorganic Composites; Beijing University of Chemical Technology; Beijing 100029 People's Republic of China
| | - Liqun Zhang
- State Key Laboratory of Organic-Inorganic Composites; Beijing University of Chemical Technology; Beijing 100029 People's Republic of China
| | - Xiujuan Wang
- State Key Laboratory of Organic-Inorganic Composites; Beijing University of Chemical Technology; Beijing 100029 People's Republic of China
| | - Dongyun Ren
- State Key Laboratory of Organic-Inorganic Composites; Beijing University of Chemical Technology; Beijing 100029 People's Republic of China
| | - Sizhu Wu
- State Key Laboratory of Organic-Inorganic Composites; Beijing University of Chemical Technology; Beijing 100029 People's Republic of China
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25
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Zhou D, Choi P. Molecular dynamics study of water diffusivity at low concentrations in non-swollen and swollen polyurethanes. POLYMER 2012. [DOI: 10.1016/j.polymer.2012.04.056] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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26
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Pure and Modified Co-Poly(amide-12-b-ethylene oxide) Membranes for Gas Separation Studied by Molecular Investigations. MEMBRANES 2012; 2:346-66. [PMID: 24958285 PMCID: PMC4021908 DOI: 10.3390/membranes2030346] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/24/2012] [Revised: 06/05/2012] [Accepted: 06/13/2012] [Indexed: 11/24/2022]
Abstract
This paper deals with a theoretical investigation of gas transport properties in a pure and modified PEBAX block copolymer membrane with N-ethyl-o/p-toluene sulfonamide (KET) as additive molecules. Molecular dynamics simulations using COMPASS force field, Gusev-Suter Transition State Theory (TST) and Monte Carlo methods were used. Bulk models of PEBAX and PEBAX/KET in different copolymer/additive compositions were assembled and analyzed to evaluate gas permeability and morphology to characterize structure-performance relationships.
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27
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Perez LD, Lopez BL. Thermal characterization of SBR/NBR blends reinforced with a mesoporous silica. J Appl Polym Sci 2012. [DOI: 10.1002/app.35689] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Leon D. Perez
- Departamento de química, Pontificia Universidad Javeriana, Bogotá, Bogota, D.C. Colombia
- Grupo Ciencia de los Materiales, Universidad de Antioquia, Medellín, Antioquia, Colombia
| | - Betty L. Lopez
- Grupo Ciencia de los Materiales, Universidad de Antioquia, Medellín, Antioquia, Colombia
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Marque G, Verdu J, Prunier V, Brown D. A molecular dynamics simulation study of three polysulfones in dry and hydrated states. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/polb.22117] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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29
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Molecular modeling studies of interactions between styrene–butadiene latex and sodium polyacrylate polymer surface. ACTA ACUST UNITED AC 2010. [DOI: 10.1016/j.theochem.2010.05.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Sacristan J, Mijangos C. Free Volume Analysis and Transport Mechanisms of PVC Modified with Fluorothiophenol Compounds. A Molecular Simulation Study. Macromolecules 2010. [DOI: 10.1021/ma1011045] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Javier Sacristan
- Instituto de Ciencia y Tecnología de Polímeros (CSIC) C/Juan de la Cierva 3, 28008, Madrid, Spain
| | - Carmen Mijangos
- Instituto de Ciencia y Tecnología de Polímeros (CSIC) C/Juan de la Cierva 3, 28008, Madrid, Spain
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31
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Transport properties of a co-poly(amide-12-b-ethylene oxide) membrane: A comparative study between experimental and molecular modelling results. J Memb Sci 2008. [DOI: 10.1016/j.memsci.2008.06.031] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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32
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Wu C, Xu W. Atomistic simulation study of absorbed water influence on structure and properties of crosslinked epoxy resin. POLYMER 2007. [DOI: 10.1016/j.polymer.2007.06.038] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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