Investigation of performance of Pebax/ Poly(vinyl alcohol) blend membrane for carbon dioxide separation from nitrogen

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Kheirtalab Mina; Abedini Reza; GHORBANI MOHSEN

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Journal: APPLIED RESEARCH IN CHEMICAL POLYMER ENGINEERING Year:2020 | Volume:3 | Issue:4 Page(s): 55-69

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Title

Investigation of performance of Pebax/ Poly(vinyl alcohol) blend membrane for carbon dioxide separation from nitrogen

Author(s)

Kheirtalab Mina | Abedini Reza | GHORBANI MOHSEN | Issue Writer Certificate

Keywords

Blend membrane

Pebax®1657

PVA

Permeability

Selectivity

CO2/N2 separation

Abstract

Research subject: Selectivity and Permeability are major properties of polymeric membranes in gas separation process. Hence, nowadays modification of membranes has been highly noticed in order to improve the aforementioned properties. Research approach: In this study, in order to improve the performance of polymeric membranes, Blend membranes containing Pebax® 1657 and poly(vinyl alcohol) (PVA) were synthesized for CO2 separation. The effect of concentration of PVA in Pebax matrix was investigated on structure, morphology, and gas separation properties of the resultant membranes. Formation of chemical bonds, crystallinity, and crosssectional morphology were studied using Fourier-transform infrared spectroscopy (FTIR), differential scanning caxlorimetry (DSC), and field emission scanning electron microscopy (FESEM), respectively. Main results: DSC results indicated an increase in the crystallinity and also glass transition temperature in presence of 5 to 15 wt. % of PVA, while the membrane crystallinity decreased by increasing the PVA content up to 20 wt. %. FESEM images demonstrated a uniform crosssection without any cracks and defects for the neat Pebax membrane but by adding PVA to Pebax matrix, cracks and cave structures appeared on the cross-section of the Blend membranes. The CO2/N2 separation performance of membranes was measured using a constant-volume set-up at 30° C and feed pressure of 2, 6 and 10 bar. The obtained results revealed that the CO2 Permeability in Blend membranes improved with increase in the PVA content. The best CO2 Permeability with the value of 204. 64 Barrer was obtained at 20 wt. % of PVA in the blend at feed pressure of 10 bar. Moreover, the highest Selectivity of CO2/N2 for the Blend membrane containing 15 wt. % of PVA was about 100. 21 at 10 bar and 30° C.

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APA: Copy

Kheirtalab, Mina, Abedini, Reza, & GHORBANI, MOHSEN. (2020). Investigation of performance of Pebax/ Poly(vinyl alcohol) blend membrane for carbon dioxide separation from nitrogen. APPLIED RESEARCH IN CHEMICAL POLYMER ENGINEERING, 3(4 ), 55-69. SID. https://sid.ir/paper/267779/en

Vancouver: Copy

Kheirtalab Mina, Abedini Reza, GHORBANI MOHSEN. Investigation of performance of Pebax/ Poly(vinyl alcohol) blend membrane for carbon dioxide separation from nitrogen. APPLIED RESEARCH IN CHEMICAL POLYMER ENGINEERING[Internet]. 2020;3(4 ):55-69. Available from: https://sid.ir/paper/267779/en

IEEE: Copy

Mina Kheirtalab, Reza Abedini, and MOHSEN GHORBANI, “Investigation of performance of Pebax/ Poly(vinyl alcohol) blend membrane for carbon dioxide separation from nitrogen,” APPLIED RESEARCH IN CHEMICAL POLYMER ENGINEERING, vol. 3, no. 4 , pp. 55–69, 2020, [Online]. Available: https://sid.ir/paper/267779/en

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