CO2/CH4 mixed gas separation using poly(ether-b-amide)-ZnO nanocomposite membranes: Experimental and molecular dynamics study

Amirkhani, Farid; Harami, Hossein Riasat; Asghari, Morteza

doi:10.1016/j.polymertesting.2020.106464

Cited by 49 publications

(25 citation statements)

References 63 publications

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“…However, with extra increasing the NH 2 ‐HNTs loading (2 wt%), CO 2 permeability rises, while the ideal selectivity lessens and the data points get away from the 1991 upper bound. Additionally, for the extra assessment of this work's resultant membranes performance, permeability‐selectivity data of other Pebax‐based membranes in literature, 3,9–12,43,59–61 were put in Figure 7, and the outcomes showed superiority of the prepared MMMs in this study, particularly that loaded with 1.5 wt% of NH 2 ‐HNTs compared to the other MMMs. As a consequence, this membrane can be considered a suitable choice for CO 2 /CH 4 separation.…”

Section: Resultsmentioning

confidence: 76%

Superior Pebax‐1657/amine‐modified halloysite nanotubes mixed‐matrix membranes to improve the CO₂/CH₄ separation efficiency

Ahmadi

Mohammadi

Azizi

2021

J of Applied Polymer Sci

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In the present study, halloysite nanotubes (HNTs) were firstly functionalized using N‐β‐(aminoethyl)‐γ‐aminopropyltrimethoxy silane and then employed as nanofillers to fabricate mixed‐matrix membranes including poly (ether‐block‐amide) polymer as the primary material. To characterize the HNTs, as well as the obtained membranes, thermal gravimetric analysis, Fourier‐transform infrared spectroscopy, X‐ray powder diffraction, and Field emission scanning electron microscopy analyses were employed. Effects of the modified and pure HNTs loadings, as well as feed pressure on CH4 and CO2 permeabilities and ideal CO2/CH4 selectivity of the prepared membranes, were surveyed. The experimental permeation results indicated that incorporation of 1.5 wt% of amine‐functionalized HNTs into the polymer matrix improves CO2 permeability and the ideal selectivity by nearly 37 and 24%, respectively, due to the higher CO2 adsorption capacity of the amine‐functionalized HNTs.

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Section: Resultsmentioning

confidence: 76%

Superior Pebax‐1657/amine‐modified halloysite nanotubes mixed‐matrix membranes to improve the CO₂/CH₄ separation efficiency

Ahmadi

Mohammadi

Azizi

2021

J of Applied Polymer Sci

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“…The Pebax of 1657 grade is that which is used in the majority of the reviewed studies. Its structure is depicted in Figure 1 , which shows the spatial arrangement of EO units with a bond angle of 110° [ 5 ]. The repeating units consist of approximately 35 EO units followed by approximately 9 nylon-6 units [ 6 ].…”

Section: Materials For the Analysed Mmmsmentioning

confidence: 99%

“…The IL-functionalized LDHs ([Hmim][NTf 2 ]@LDHN) were reported to form hydrogen bonds with both the PA and PEO blocks of the Pebax copolymer, providing an excellent interfacial interaction [ 86 ]. The addition of nano ZnO at 0.5 wt% into the Pebax 1657 matrix caused the establishment of ZnO−PEO interactions, while at higher loadings of ZnO, the filler’s self-association (ZnO–ZnO) was found [ 5 ].…”

Section: Main Issues In Mmms Developmentmentioning

confidence: 99%

A Review of the Recent Progress in the Development of Nanocomposites Based on Poly(ether-block-amide) Copolymers as Membranes for CO2 Separation

Clarizia

Bernardo

2021

Polymers

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An inspiring challenge for membrane scientists is to exceed the current materials’ performance while keeping the intrinsic processability of the polymers. Nanocomposites, as mixed-matrix membranes, represent a practicable response to this strongly felt need, since they combine the superior properties of inorganic fillers with the easy handling of the polymers. In the global strategy of containing the greenhouse effect by pursuing a model of sustainable growth, separations involving CO2 are some of the most pressing topics due to their implications in flue gas emission and natural gas upgrading. For this purpose, Pebax copolymers are being actively studied by virtue of a macromolecular structure that comprises specific groups that are capable of interacting with CO2, facilitating its transport with respect to other gas species. Interestingly, these copolymers show a high versatility in the incorporation of nanofillers, as proved by the large number of papers describing nanocomposite membranes based on Pebax for the separation of CO2. Since the field is advancing fast, this review will focus on the most recent progress (from the last 5 years), in order to provide the most up-to-date overview in this area. The most recent approaches for developing Pebax-based mixed-matrix membranes will be discussed, evidencing the most promising filler materials and analyzing the key-factors and the main aspects that are relevant in terms of achieving the best effectiveness of these multifaceted membranes for the development of innovative devices.

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“…Specifically, the PEO segment has a high affinity toward CO 2 , and its chain flexibility provides a good permeability, and finally, the PEO segment creates a strong interaction with polar groups, while the PA segment improves the mechanical properties of the matrix due to its glassy property. PEBA 1657 composed of a linear chain of 40% PA and 60% PEO that manifested a high level of gas separation performance because of the considerable interaction of CO 2 ‐philic parts and the high mechanical strength 6‐8 …”

Section: Introductionmentioning

confidence: 99%

Polypyrrole‐aided surface decoration of graphene oxide nanosheets as fillers for poly(ether‐ b ‐amid) mixed matrix membranes to enhance CO ₂ capture

Asghari

Saadatmandi

Parnian³

2021

Int J Energy Res

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Summary Modified graphene oxide (GO) nanosheets as fillers within poly(ether‐b‐amid) (PEBA) copolymer as matrix were used for mixed matrix membranes (MMMs) fabrication to improve CO2 capture. The GO nanosheets were modified by polypyrrole (PPy) and zinc cations. The former that have conjugated N‐containing groups provided a high degree of affinity toward CO2, and the latter has facilitated the gas molecules transport through the gas channel passages. The different modified GO nanosheets were characterized by HRTEM, FT‐IR, FESEM, XRD, and XPS analyses. Also, the FT‐IR, XRD, AFM, and SEM methods were used for the structural and morphological characterizations of the prepared MMMs with 0.1 wt% of the nanofiller. Gas permeation tests for CH4, N2, and CO2 were then performed for all prepared membranes. Compared to the neat PEBA membrane, the selectivity of both CO2/CH4 and CO2/N2 for PEBA‐GO‐PPy membrane increased up to 62% and 51% and for the PEBA‐GO‐PPy‐Zn membrane increased up to 58% and 56%, respectively. Furthermore, the PEBA‐GO‐PPy‐Zn disclosed a 10% increase in permeability of CO2 than the neat membrane. For PEBA‐GO‐PPy MMM, the permeability of CO2 was 122.4 Barrer, and the selectivity of CO2/CH4 and CO2/N2 was 29.8 and 122.5, respectively. Moreover, the gas separation results for PEBA‐GO‐PPy‐Zn MMM were about 131.8 Barrer for CO2 permeability and 30.7 and 119.2 for CO2/CH4 and CO2/N2 selectivities, respectively. Besides, the CO2/N2 selectivity of PEBA‐GO‐PPy and PEBA‐GO‐PPy‐Zn overcomes the Robeson's upper bound.

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CO2/CH4 mixed gas separation using poly(ether-b-amide)-ZnO nanocomposite membranes: Experimental and molecular dynamics study

Cited by 49 publications

References 63 publications

Superior Pebax‐1657/amine‐modified halloysite nanotubes mixed‐matrix membranes to improve the CO₂/CH₄ separation efficiency

Superior Pebax‐1657/amine‐modified halloysite nanotubes mixed‐matrix membranes to improve the CO₂/CH₄ separation efficiency

A Review of the Recent Progress in the Development of Nanocomposites Based on Poly(ether-block-amide) Copolymers as Membranes for CO2 Separation

Polypyrrole‐aided surface decoration of graphene oxide nanosheets as fillers for poly(ether‐ b ‐amid) mixed matrix membranes to enhance CO ₂ capture

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CO2/CH4 mixed gas separation using poly(ether-b-amide)-ZnO nanocomposite membranes: Experimental and molecular dynamics study

Cited by 49 publications

References 63 publications

Superior Pebax‐1657/amine‐modified halloysite nanotubes mixed‐matrix membranes to improve the CO2/CH4 separation efficiency

Superior Pebax‐1657/amine‐modified halloysite nanotubes mixed‐matrix membranes to improve the CO2/CH4 separation efficiency

A Review of the Recent Progress in the Development of Nanocomposites Based on Poly(ether-block-amide) Copolymers as Membranes for CO2 Separation

Polypyrrole‐aided surface decoration of graphene oxide nanosheets as fillers for poly(ether‐ b ‐amid) mixed matrix membranes to enhance CO 2 capture

Contact Info

Product

Resources

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Superior Pebax‐1657/amine‐modified halloysite nanotubes mixed‐matrix membranes to improve the CO₂/CH₄ separation efficiency

Superior Pebax‐1657/amine‐modified halloysite nanotubes mixed‐matrix membranes to improve the CO₂/CH₄ separation efficiency

Polypyrrole‐aided surface decoration of graphene oxide nanosheets as fillers for poly(ether‐ b ‐amid) mixed matrix membranes to enhance CO ₂ capture