Relevant bibliographies by topics / Matrimid 5218

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  2. Dissertations / Theses

Academic literature on the topic 'Matrimid 5218'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Matrimid 5218"

1

Russo, Francesca, Roberto Castro-Muñoz, Francesco Galiano, and Alberto Figoli. "Unprecedented preparation of porous Matrimid® 5218 membranes." Journal of Membrane Science 585 (September 2019): 166–74. http://dx.doi.org/10.1016/j.memsci.2019.05.036.

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Ebadi Amooghin, Abtin, Mohammadreza Omidkhah, and Ali Kargari. "Enhanced CO2 transport properties of membranes by embedding nano-porous zeolite particles into Matrimid®5218 matrix." RSC Advances 5, no. 12 (2015): 8552–65. http://dx.doi.org/10.1039/c4ra14903c.

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Monteiro, Bernardo, Ana Nabais, Maria Casimiro, Ana Martins, Rute Francisco, Luísa Neves, and Cláudia Pereira. "Impact on CO2/N2 and CO2/CH4 Separation Performance Using Cu-BTC with Supported Ionic Liquids-Based Mixed Matrix Membranes." Membranes 8, no. 4 (October 11, 2018): 93. http://dx.doi.org/10.3390/membranes8040093.

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The efficient separation of gases has industrial, economic, and environmental importance. Here, we report the improvement in gas separation performance of a polyimide-based matrix (Matrimid®5218) filled with a Cu-based metal organic framework [MOF, Cu3(BTC)2] with two different ionic liquids (ILs) confined within the pores. The chosen ILs are commonly used in gas solubilization, 1-ethyl-3-methylimidazolium tetrafluoroborate ([EMIM][BF4]) and 1-Ethyl-3-methylimidazolium trifluoromethanesulfonate ([EMIM][OTf]), and the incorporation of the [EMIM][BF4]@Cu-BTC and [EMIM][OTf]@Cu-BTC composites in Matrimid®5218 proved to be an efficient strategy to improve the permeability and selectivity toward CO2/N2 and CO2/CH4 mixtures.
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Tempelman, Kristianne, Jeffery A. Wood, Friedrich Kremer, and Nieck E. Benes. "Relaxation Dynamics of Thin Matrimid 5218 Films in Organic Solvents." Journal of Physical Chemistry B 123, no. 18 (April 2019): 4017–24. http://dx.doi.org/10.1021/acs.jpcb.9b00688.

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Scholes, Colin A., Wen Xian Tao, Geoff W. Stevens, and Sandra E. Kentish. "Sorption of methane, nitrogen, carbon dioxide, and water in Matrimid 5218." Journal of Applied Polymer Science 117, no. 4 (April 13, 2010): 2284–89. http://dx.doi.org/10.1002/app.32148.

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Rahmani, Mohammadreza, Abbass Kazemi, Farid Talebnia, and Pouria Abbasszadeh Gamali. "Fabrication and characterization of brominated matrimid® 5218 membranes for CO2/CH4 separation: application of response surface methodology (RSM)." e-Polymers 16, no. 6 (November 1, 2016): 481–92. http://dx.doi.org/10.1515/epoly-2016-0140.

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AbstractIn the present study, special effort was focused on increasing permeability of matrimid membranes. For this objective, a bromination reaction was carried out. The reaction of bromine with polymer was investigated using Fourier transform infrared (FTIR) spectroscopy analysis. A combination of pristine and brominated matrimid was used to prepare modified membranes due to the fact that brominated matrimid membranes were too delicate. Employing a gas separation membrane unit, the permeability of pristine and modified membranes for pure gases (CO2 and CH4) was studied. Modified membranes were much more permeable and less selective than pristine membranes. In fact, the increase in permeability of modified membranes can be attributed to the rise in the fractional free volume of modified membranes. Thermal properties of modified and unmodified membranes were also studied by thermal gravimetric and differential scanning calorimetry analysis. As a result, thermal resistance of modified membranes decreased in a limited temperature range. Modified membranes indicated smaller values of tensile strength than pristine membranes which were assessed using tensile strength analysis. The parameters which can affect the pure gases permeation through membranes such as, bromine concentration in modified membranes and operating pressure were considered as variables and the experimental design was carried out.
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Samarasinghe, S. A. S. C., Chong Yang Chuah, H. Enis Karahan, G. S. M. D. P. Sethunga, and Tae-Hyun Bae. "Enhanced O2/N2 Separation of Mixed-Matrix Membrane Filled with Pluronic-Compatibilized Cobalt Phthalocyanine Particles." Membranes 10, no. 4 (April 18, 2020): 75. http://dx.doi.org/10.3390/membranes10040075.

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Membrane-based air separation (O2/N2) is of great importance owing to its energy efficiency as compared to conventional processes. Currently, dense polymeric membranes serve as the main pillar of industrial processes used for the generation of O2- and N2-enriched gas. However, conventional polymeric membranes often fail to meet the selectivity needs owing to the similarity in the effective diameters of O2 and N2 gases. Meanwhile, mixed-matrix membranes (MMMs) are convenient to produce high-performance membranes while keeping the advantages of polymeric materials. Here, we propose a novel MMM for O2/N2 separation, which is composed of Matrimid® 5218 (Matrimid) as the matrix, cobalt(II) phthalocyanine microparticles (CoPCMPs) as the filler, and Pluronic® F-127 (Pluronic) as the compatibilizer. By the incorporation of CoPCMPs to Matrimid, without Pluronic, interfacial defects were formed. Pluronic-treated CoPCMPs, on the other hand, enhanced O2 permeability and O2/N2 selectivity by 64% and 34%, respectively. We explain the enhancement achieved with the increase of both O2 diffusivity and O2/N2 solubility selectivity.
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Rahmani, Mohammadreza, Abbass Kazemi, and Farid Talebnia. "Matrimid mixed matrix membranes for enhanced CO2/CH4 separation." Journal of Polymer Engineering 36, no. 5 (July 1, 2016): 499–511. http://dx.doi.org/10.1515/polyeng-2015-0176.

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Abstract In this study, Matrimid mixed matrix membranes (MMMs) were prepared for CO2/CH4 separation. MMMs were fabricated for improving the permeability and ideal selectivity of Matrimid membranes. Matrimid 5218 was used as a polymer matrix, and inorganic particles were used as additives. MMMs with a thickness of 33–38 μm were prepared at room temperature. The effects of the types and different amounts of additives on the permeability and ideal selectivity of MMMs were investigated by using a gas separation membrane unit. Scanning electron microscopy and atomic force microscopy images were used for checking the dispersion and agglomeration of additives within polymer matrices. Thermal gravimetric analysis showed that MMMs became much more thermally stable than pristine membranes. The decomposition temperatures (Td) of MMMs were increased as compared to those of pristine membranes. The results of Fourier transform infrared spectroscopy analysis of MMMs and pristine membranes were recorded. The tensile strength of MMMs and pristine membranes was studied, and the results indicated that MMMs had higher values of tensile strength compared to pristine membranes.
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Sharip, Mohd Syafiq, and Norazlianie Sazali. "Tubular carbon membrane for Hydrogen separation: Effect of Pyrolisis condition." Journal of Modern Manufacturing Systems and Technology 4, no. 1 (March 27, 2020): 60–67. http://dx.doi.org/10.15282/jmmst.v4i1.3413.

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Hydrogen (H2)-based economy development is expected to create extensive need for efficient collecting strategies of fairly high purity H2. The aim of a H2-selective membrane is to manipulate H2’s high diffusivity characteristics as well as to restrict the outcome of lower solubility. Carbon membranes offer high potential in gas separation industry due to its highly permeable and selective. Therefore, this study aims to investigate the effect of pyrolisis temperature on the gas separation properties. Matrimid 5218 used as a precursor for carbon tubular membrane preparation to produce high quality of carbon membrane via pyrolisis process. The polymer solution was coated on the surface of tubular ceramic tubes by using dip-coating method. Dip-coating technique offer high potential in fabricating defect free carbon membrane. The polymer tubular membrane was then carbonized under argon atmosphere at 600, 700, and 800, and 900oC with heating rate of 2 oC/min. Matrimid 5218-based carbon tubular membranes were fabricated and characterized in terms of its structural morphology, chemical structure, thermal stability, and gas permeation properties by using scanning electron microscopy (SEM), Fourier transform infrared (FTIR), and pure gas permeation system, respectively. The highest H2/N2 selectivity of 401.08±2.56 was obtained for carbon membrane carbonized at 800oC with heating rate of 2oC/min
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Esposito, Elisa, Irene Mazzei, Marcello Monteleone, Alessio Fuoco, Mariolino Carta, Neil McKeown, Richard Malpass-Evans, and Johannes Jansen. "Highly Permeable Matrimid®/PIM-EA(H2)-TB Blend Membrane for Gas Separation." Polymers 11, no. 1 (December 30, 2018): 46. http://dx.doi.org/10.3390/polym11010046.

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The effect on the gas transport properties of Matrimid®5218 of blending with the polymer of intrinsic microporosity PIM-EA(H2)-TB was studied by pure and mixed gas permeation measurements. Membranes of the two neat polymers and their 50/50 wt % blend were prepared by solution casting from a dilute solution in dichloromethane. The pure gas permeability and diffusion coefficients of H2, He, O2, N2, CO2 and CH4 were determined by the time lag method in a traditional fixed volume gas permeation setup. Mixed gas permeability measurements with a 35/65 vol % CO2/CH4 mixture and a 15/85 vol % CO2/N2 mixture were performed on a novel variable volume setup with on-line mass spectrometric analysis of the permeate composition, with the unique feature that it is also able to determine the mixed gas diffusion coefficients. It was found that the permeability of Matrimid increased approximately 20-fold with the addition of 50 wt % PIM-EA(H2)-TB. Mixed gas permeation measurements showed a slightly stronger pressure dependence for selectivity of separation of the CO2/CH4 mixture as compared to the CO2/N2 mixture, particularly for both the blended membrane and the pure PIM. The mixed gas selectivity was slightly higher than for pure gases, and although N2 and CH4 diffusion coefficients strongly increase in the presence of CO2, their solubility is dramatically reduced as a result of competitive sorption. A full analysis is provided of the difference between the pure and mixed gas transport parameters of PIM-EA(H2)-TB, Matrimid®5218 and their 50:50 wt % blend, including unique mixed gas diffusion coefficients.
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Dissertations / Theses on the topic "Matrimid 5218"

1

Rodrigues, Catarina. "Preparação de novas membranas com MOF’s e líquidos iónicos para aplicação em processos de captura de CO2." Master's thesis, Faculdade de Ciências e Tecnologia, 2013. http://hdl.handle.net/10362/11360.

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Andrade, Hugo Pereira. "Preparação de novas membranas com MOF’s para aplicação em processos de captura de CO2." Master's thesis, Faculdade de Ciências e Tecnologia, 2013. http://hdl.handle.net/10362/9908.

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Yager, Kimberly Marie. "Application of Fourier transform infrared spectroscopy to determine the reaction rate equation for cross-linking Matrimid 5218 with ethylenediamine in methanol." 2018. http://hdl.handle.net/2097/39250.

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Master of Science
Department of Chemical Engineering
John R. Schlup
The cross-linking reaction of the polyimide Matrimid 5218 with ethylenediamine (EDA) in methanol was investigated using Fourier transform infrared (FTIR) spectroscopy. Peaks associated with breaking imide bonds and the formation of amide bonds were identified. Using an internal standard peak of 1014 cm⁻¹ allowed for quantitative analysis to be applied. The peak areas, calculated by slice area, were used for absorbance ratio analysis to follow the cross-linking reaction as a function of time. Lastly, the absorbance values for the decreasing peak 1718 cm⁻¹ were used to calculate the order of reaction for the reaction rate of the mechanism.
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Ferreira, Inês Castanheira Curado Coelho. "Carbon dioxide capture using mixed matrix membranes with metal-organic frameworks supporting ionic liquids." Master's thesis, 2017. http://hdl.handle.net/10362/25659.

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The aim of this thesis was the development of new mixed matrix membranes (MMMs) for carbon dioxide (CO2) capture from post-combustion flue gas streams. The synthetized pristine MOF MIL-101(Cr) and new IL@MOF systems, produced by the incorporation of two ionic liquids in MIL-101(Cr), [PMIM][Br]@MIL-101(Cr) and [BMIM][Br]@MIL-101(Cr) were characterized. The textural properties and adsorption capacity for CO2 and N2 on these materials were also studied. The adsorption equilibria of the pure gases N2 and CO2 on the mentioned materials were performed by using the gravimetric method in a range of pressures from 0 to 10 bar and at 30ºC. All materials adsorbed higher amounts of CO2 than N2, due to the CO2 higher affinity with the adsorbents. The prepared MMMs are separated in three groups, Matrimid®5218/MIL-101(Cr), Matrimid®5218/[PMIM][Br]@MIL-101(Cr), Matrimid®5218/[BMIM][Br]@MIL-101(Cr). Each membrane group was prepared using a polymeric material Matrimid®5218 with different concentrations of filler (10%, 20% and 30% (w/w)). All the prepared membranes were characterized by scanning electron microscopy (SEM), to evaluate their morphology; energy-dispersive x-ray spectroscopy (EDS), to observe the filler dispersion in the polymeric matrix; contact angles to determine their hydrophilicity; mechanical properties to evaluate their mechanical resistance and flexibility; thermogravimetric analysis (TGA) to evaluate their thermal stability and gas permeation experiments with pure gases (N2 and CO2) at 30ºC. The obtained results showed that all membranes have a dense structure exhibiting a good interaction between the polymer, MOF and IL@MOF. It was also verified that with the addition of MOF the membranes turned more fragile, while with the addition of the ionic liquid in the MOF porous structure led to more flexible and resistant membranes. Additionally, it was found that the addition of MOF or IL@MOF in the polymeric matrix turn the membranes more hydrophilic. Thermogravimetric analysis (TGA) showed that all membranes are stable up to 300ºC. Gas permeation results showed that depending on the MOF or IL@MOF concentration on the polymer matrix an increase in CO2/N2 ideal selectivity is observed.
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Nabais, Ana Rita Mileu Mota. "Preparação e caracterização de membranas de matriz mista para separação de CO2." Master's thesis, 2016. http://hdl.handle.net/10362/19710.

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O trabalho desenvolvido nesta tese teve como objetivo a preparação e caracterização de novas membranas com redes metal-orgânico (metal-organic frameworks - MOFs) e líquidos iónicos, para aplicação em processos de captura de CO2. Foram preparados dois grupos distintos de membranas. O primeiro grupo correspondeu a membranas de Matrimid®5218 com diferentes concentrações do MOF Fe(BTC) (5%, 10%, 20% e 30% p/p). O segundo grupo consistiu em membranas de Matrimid®5218 com 2% de MOF (Zn-MOF-5 e Mg-MOF-74) e Matrimid®5218 com 2% destes MOFs com líquido iónico incorporado (TMGA e [C2mim][C(CN)3]). As membranas foram caracterizadas recorrendo a diferentes técnicas: microscopia eletrónica de varrimento (SEM) para avaliar a morfologia das membranas e a distribuição do MOF no polímero Matrimid®5218; ensaios de perfuração para determinação das propriedades mecânicas das membranas; medição dos ângulos de contacto para determinar a hidrofilicidade das membranas; termogravimetria para avaliar a estabilidade térmica e, finalmente, ensaios de permeação gasosa para N2 e CO2, a 30 ºC. Dos resultados obtidos verificou-se que todas as membranas preparadas são densas e que existe uma boa interação entre o polímero, os MOFs e líquidos iónicos. Verificou-se ainda que a adição de MOFs à matriz polimérica torna as membranas menos resistentes, mas que a adição de líquido iónico lhes confere flexibilidade. A análise aos ângulos de contacto revelou que a adição de Fe(BTC) torna as membranas hidrofóbicas, ao contrário do que se verificou para as membranas com MOF-5, MOF-74 e LI@MOF incorporado. A análise da termogravimetria revelou que a incorporação de MOF diminui a temperatura de degradação e aumenta a perda de massa das membranas, mas a adição de líquido iónico [C2mim][C(CN)3] pode tornar-se vantajosa. Os valores obtidos na permeação gasosa indicaram um aumento na permeabilidade das membranas com Fe(BTC), especialmente para a membrana com 30% Fe(BTC) e MOF-5 com TMGA.
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Moura, Beatriz Quaresma Chaves Alves de. "Hybrid Ionic Liquids/Metal Organic Frameworks for CO2/CH4 separations." Master's thesis, 2018. http://hdl.handle.net/10362/49844.

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