DOI: 10.1016/j.jcou.2018.08.024
Scopus记录号: 2-s2.0-85053178364
论文题名: A ground breaking polymer blend for CO2/N2 separation
作者: Mazinani S. ; Ramezani R. ; Darvishmanesh S. ; Molelekwa G.F. ; Di Felice R. ; Van Der Bruggen B.
刊名: Journal of CO2 Utilization
ISSN: 22129820
出版年: 2018
卷: 27 起始页码: 536
结束页码: 546
语种: 英语
英文关键词: CO2 separation
; Extem
; Miscibility
; Molecular interaction
; PES
; Polymer blending
Scopus关键词: Blending
; Carbon capture
; Carbon dioxide
; Differential scanning calorimetry
; Fourier transform infrared spectroscopy
; Glass
; Glass transition
; Molecular interactions
; Molecular structure
; Polyethylenes
; Polymer blends
; Separation
; Solubility
; Temperature
; Characteristic peaks
; CO2 separation
; Extem
; Fractional free volume
; Intermolecular interactions
; Polymer blending
; Separation performance
; Single glass transition
; Gas permeable membranes
英文摘要: The commercial polyetherimide sulfone polymer Extem was blended with polyethersulfone (PES) to achieve a new, highly selective membrane for CO2/N2 separation in order to allow for a breakthrough in carbon capture applications. The miscibility and molecular interaction between PES and Extem for blend compositions 80/20, 50/50 and 20/80 w/w were evaluated. Differential Scanning Calorimetry showed that of all the blend compositions, only the 20/80 blend is miscible as a single glass transition temperature was observed, lying between the glass transition temperatures of PES and Extem. FTIR spectra revealed shifts in functional group frequencies of the polymer blends, suggesting inter-molecular interactions between the polymer chains of Extem and PES. XRD patterns of the 20/80 blend showed a much lower characteristic peak intensity compared to other blend compositions, which indicates strong inter-molecular interactions. The density of the polymer blends was lower than that of the pure polymers, which is related to a decrease in fractional free volume. The separation performance of membranes synthesized with these blends was investigated for a gas mixture containing 15% vol. CO2. Blend membranes were limited by the tradeoff between permeability and selectivity, except for the 20/80 blend, which interstingly had a permeability and selectivity more than threefold that of other membranes, as the values hovered around the Robeson's upper bound. The miscibility of Extem/PES therefore resulted in a new polymer material, which is a potential candidate for carbon capture applications. © 2018 Elsevier Ltd. All rights reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/111824
Appears in Collections: 气候减缓与适应
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作者单位: ProcESS - Process Engineering for Sustainable Systems, Department of Chemical Engineering, KU Leuven, Belgium; Department of Civil, Chemical and Environmental Engineering, University of Genoa, Genova, Italy; Faculty of Engineering and the Built Environment, Tshwane University of Technology, Pretoria, South Africa
Recommended Citation:
Mazinani S.,Ramezani R.,Darvishmanesh S.,et al. A ground breaking polymer blend for CO2/N2 separation[J]. Journal of CO2 Utilization,2018-01-01,27