Enhancement of the gas separation properties of polyurethane membrane by epoxy nanoparticles

Isfahani, Ali Pournaghshband; Sadeghi, Morteza; Dehaghani, Amir Hossein Saeedi; Aravand, Mohammadali

doi:10.1016/j.jiec.2016.08.012

Cited by 78 publications

(51 citation statements)

References 53 publications

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“…The gas transport properties of the PU and PU MMMs are shown in Table . The higher CO 2 permeability is related to its low kinetic diameter, high condensability, and stronger interactions with polar groups in the PU chains as compared to other gases such O 2 , CH 4 , and N 2 . The permeability of all gases enhances by increasing the filler contents while the selectivity slightly decreases.…”

Section: Resultsmentioning

confidence: 99%

“…Polyurethanes (PUs) have gained attractions due to their high CO 2 separation and good film formation ability . In our previous works, PU MMMs showed enhanced CO 2 /N 2 and CO 2 /CH 4 selectivity while gas permeability decreased by adding the fillers . This behavior is commonly observed for rubbery polymer membranes which shows different trend from the gas separation of glassy polymer MMMs.…”

Section: Introductionmentioning

confidence: 95%

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Polyurethane‐mesoporous silica gas separation membranes

Ghalei

Isfahani

Sadeghi

et al. 2017

Polymers for Advanced Techs

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The concept of mixed matrix membrane comprising dispersed inorganic fillers into a polymer media has revealed appealing to tune the gas separation performance. In this work, the membranes were prepared by incorporation of mesoporous silica into polyurethane (PU). Mesoporous silica particles with different pore size and structures, MCM-41, cubic MCM-48 and SBA-16, were synthesized by templating method and functionalized with 3-aminopropyltriethoxysilane (APTES). High porosity and aminated surface of the mesoporous silica enhance the adhesion of the particles to the PU matrix. The SEM and FTIR results showed strong interactions between the particles and the PU chains. Moreover, the thermal stability of the hybrid PUs improved compared to the pure polymer. Gas transport properties of the membranes were measured for pure CO 2 , CH 4 , O 2 , and N 2 gases at 10 bar and 25°C. The results showed that the gas permeabilities enhanced with increasing in the loading of modified mesoporous silica particles. High porosity and amine-functionalized particles render opportunities to enhance the gas diffusivity and solubility through the membranes. The enhanced gas transport properties of the mixed matrix membranes reveal the advantages of mesoporous silica to improve the gas permeability (CO 2 permeability up to~70) without scarifying the gas selectivity (α(CO 2 /N 2 )~30 for 5 wt% SBA-16 content).

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 95%

Polyurethane‐mesoporous silica gas separation membranes

Ghalei

Isfahani

Sadeghi

et al. 2017

Polymers for Advanced Techs

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“…[1][2][3] The epoxy oligomers are widely applied in compositions due to the unique combination of the properties outstanding mechanical, chemical, electrical, and thermal properties. [4][5][6][7][8][9] However, because the EP matrix must withstand high mechanical loads, it is usually reinforced with fillers. [10] These fillers can be selected as particles such as fibers, low-molecular-weight liquid rubbers, and engineering thermoplastics ceramic powders.…”

Section: Introductionmentioning

confidence: 99%

Synergistic effect between CuCr₂O₄ nanoparticles and plasticizer on mechanical properties of EP/PU/CuCr₂O₄ nanocomposites: Experimental approach and molecular dynamics simulation

Sarafrazi

Ghasemi

Hamadanian

2020

J of Applied Polymer Sci

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In this research, copper chromite (CuCr2O4) nanoparticles (NPs) were synthesized by the sol–gel auto‐combustion method. The effects of CuCr2O4 NPs and polyurethane (PU) on the tensile strength of the epoxy (EP) resin were studied by considering different weight percentages (wt%). The response surface methodology (RSM) coupled with central composite design (CCD) (RSM/CCD) methods were also used to optimize the Young's modulus, yield strength, and ultimate tensile strength of the EP/PU/CuCr2O4 nanocomposites. The composition structure and morphology of the EP/PU/CuCr2O4 nanocomposites were determined using the Fourier Transform Infrared spectroscopy (FT‐IR), X‐ray diffraction, UV–vis diffuse reflection, Scanning Electron Microscopy, X‐ray energy dispersive spectroscopy, and thermogravimetric analysis. It was also shown that the RSM/CCD methods could be utilized effectively to find the optimum process variables in the tensile test of the EP/PU/CuCr2O4 nanocomposites. Moreover, the tensile test revealed that the presence of the CuCr2O4 NPs in the EP/PU matrix improved the mechanical properties. Best results were obtained with the 0.76 wt% of the CuCr2O4 NPs and the 2.6 wt% PU in the epoxy resin. The molecular dynamic simulation was used to illustrate the effect of the NPs on the interaction energy and mechanical properties of this nanocomposite. The calculated interaction energy for the EP/PU/CuCr2O4 nanocomposites was −437.96 Kcal/mol. The results showed that Young's modulus had relative agreement with the experimental results.

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“…Alloyed membranes and mixed‐matrix membranes (MMMs) with improved morphology and physiochemical properties have allowed achieving separation performances closed to or above the upper bounds . In particular, MMMs have also addressed the limitations of inorganic membranes like brittleness and processability .…”

Section: Introductionmentioning

confidence: 99%

Improved gas transport properties of polyurethane–urea membranes through incorporating a cadmium‐based metal organic framework

Sadeghi

Isfahani

Shamsabadi

et al. 2019

J of Applied Polymer Sci

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The increasing need for more efficient separation processes has motivated the development of polymer membranes that can provide fast and selective transport. In this work, cadmium‐based metal–organic framework (MOF) nanoparticles and a polyurethane–urea (PUU) elastomer were synthesized. New mixed‐matrix membranes (MMMs) were then fabricated from the nanoparticles and the PUU. SEM images verified that embedding the nanoparticles changes the morphology of the PUU and the nanoparticles disperse well in the PUU due to satisfactory compatibility of the polymer and nanoparticles. Fourier transform infrared spectroscopy and X‐ray diffraction analysis confirmed the dispersion of the nanoparticles in the soft segment of the PUU. With increased temperature, gas permeabilities of the MMMs improved but their sieving ability deteriorated. An MMM incorporating 2.5 wt % of the MOF showed a CO2 permeability of ~140 barrer and a CO2/N2 selectivity of ~30, which are 89 and 38% higher than those of the pristine membrane. Gas permeation tests showed that the higher CO2/N2 selectivity of the MMMs was due to improved solubility selectivity and the higher CO2 permeability was a result of improved CO2 diffusivity and solubility coefficients. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 137, 48704.

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Enhancement of the gas separation properties of polyurethane membrane by epoxy nanoparticles

Cited by 78 publications

References 53 publications

Polyurethane‐mesoporous silica gas separation membranes

Polyurethane‐mesoporous silica gas separation membranes

Synergistic effect between CuCr₂O₄ nanoparticles and plasticizer on mechanical properties of EP/PU/CuCr₂O₄ nanocomposites: Experimental approach and molecular dynamics simulation

Improved gas transport properties of polyurethane–urea membranes through incorporating a cadmium‐based metal organic framework

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Enhancement of the gas separation properties of polyurethane membrane by epoxy nanoparticles

Cited by 78 publications

References 53 publications

Polyurethane‐mesoporous silica gas separation membranes

Polyurethane‐mesoporous silica gas separation membranes

Synergistic effect between CuCr2O4 nanoparticles and plasticizer on mechanical properties of EP/PU/CuCr2O4 nanocomposites: Experimental approach and molecular dynamics simulation

Improved gas transport properties of polyurethane–urea membranes through incorporating a cadmium‐based metal organic framework

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Synergistic effect between CuCr₂O₄ nanoparticles and plasticizer on mechanical properties of EP/PU/CuCr₂O₄ nanocomposites: Experimental approach and molecular dynamics simulation