Molecular engineering of PIM-1/Matrimid blend membranes for gas separation

For efficient gas separation the membrane technology is rapidly growing day by day and it is more economical and effectual than past technologies. The main objective of this study is to synthesis polymer blend membranes (PBM) using glassy polysulfone (PSU) and rubbery polyvinyl acetate (PVAc) with the addition of methyl diethanol amine for removal of CO2 from CH4. The PBM were developed by varying the composition of PVAc ranging from 5 to 20 wt% with 80 to 100 wt% PSU in DMAc solvent. The amine composition was added to the blend and kept at 10 wt%. The present of MDEA in the PBM had increased the CO2 permeance as compare with the based polymer membranes. However as the operating pressure increased from 2 to 10 bar, the PBM (PSU95%/PVAc5%) with MDEA was found to increase significantly the permeance of CO2, hence increasing the separation factor from 9.980.02 to 30.190.49. EPBM was found a very promising to be used for CO2/CH4 separation.

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Recent advances in polymer blend membranes for gas separation and pervaporation

Progress in Materials Science ◽

10.1016/j.pmatsci.2020.100713 ◽

2021 ◽

Vol 116 ◽

pp. 100713 ◽

Cited By ~ 6

Author(s):

Wai Fen Yong ◽

Hao Zhang

Keyword(s):

Gas Separation ◽

Polymer Blend ◽

Recent Advances ◽

Blend Membranes

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Polyurethane/Poly(vinyl alcohol) Blend Membranes for Gas Separation

Fibers and Polymers ◽

10.1007/s12221-018-1023-6 ◽

2018 ◽

Vol 19 (5) ◽

pp. 1119-1127 ◽

Cited By ~ 10

Author(s):

Hemmat Shirvani ◽

Morteza Sadeghi ◽

Hajar Taheri Afarani ◽

Rouhollah Bagheri

Keyword(s):

Gas Separation ◽

Vinyl Alcohol ◽

Poly Vinyl Alcohol ◽

Blend Membranes

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The prospect of synthesis of PES/PEG blend membranes using blend NMP/DMF for CO2/N2 separation

Journal of Polymer Research ◽

10.1007/s10965-021-02500-6 ◽

2021 ◽

Vol 28 (5) ◽

Author(s):

Fadel Abdul Hadi Juber ◽

Zeinab Abbas Jawad ◽

Bridgid Lai Fui Chin ◽

Swee Pin Yeap ◽

Thiam Leng Chew

Keyword(s):

Gas Separation ◽

Carbon Capture ◽

Membrane Separation ◽

Carbon Capture And Storage ◽

Polymeric Membranes ◽

Polymeric Membrane ◽

Mixed Matrix Membranes ◽

Separation Performance ◽

Trade Off ◽

Blend Membranes

AbstractCarbon dioxide (CO2) emissions have been the root cause for anthropogenic climate change. Decarbonisation strategies, particularly carbon capture and storage (CCS) are crucial for mitigating the risk of global warming. Among all current CO2 separation technologies, membrane separation has the biggest potential for CCS as it is inexpensive, highly efficient, and simple to operate. Polymeric membranes are the preferred choice for the gas separation industry due to simpler methods of fabrication and lower costs compared to inorganic or mixed matrix membranes (MMMs). However, plasticisation and upper-bound trade-off between selectivity and permeability has limited the gas separation performance of polymeric membranes. Recently, researchers have found that the blending of glassy and rubbery polymers can effectively minimise trade-off between selectivity and permeability. Glassy poly(ethersulfone) (PES) and rubbery poly(ethylene) glycol (PEG) are polymers that are known to have a high affinity towards CO2. In this paper, PEG and PES are reviewed as potential polymer blend that can yield a final membrane with high CO2 permeance and CO2/nitrogen (N2) selectivity. Gas separation properties can be enhanced by using different solvents in the phase-inversion process. N-Methyl-2-Pyrrolidone (NMP) and Dimethylformamide (DMF) are common industrial solvents used for membrane fabrication. Both NMP and DMF are reviewed as prospective solvent blend that can improve the morphology and separation properties of PES/PEG blend membranes due to their effects on the membrane structure which increases permeation as well as selectivity. Thus, a PES/PEG blend polymeric membrane fabricated using NMP and DMF solvents is believed to be a major prospect for CO2/N2 gas separation.

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Polyethersulfone/polyvinyl acetate blend membrane incorporated with TiO2 nanoparticles for CO2/CH4 gas separation

Malaysian Journal of Fundamental and Applied Sciences ◽

10.11113/mjfas.v13n4.923 ◽

2017 ◽

Vol 13 (4) ◽

pp. 774-777

Author(s):

Mohd Afzan Abdullah ◽

Hilmi Mukhtar ◽

Hafiz Abdul Mannan ◽

Yeong Yin Fong ◽

Maizatul Shima Shaharun

Keyword(s):

Tio2 Nanoparticles ◽

Gas Separation ◽

Polymer Blend ◽

Polyvinyl Acetate ◽

Morphological Structure ◽

Porous Membrane ◽

Inorganic Filler ◽

Separation Processes ◽

Blend Membrane ◽

Blend Membranes

Development of polymer blend membranes is gaining much attention especially for gas separation processes. This paper is primarily focused on synthesizing polymer blend membranes incorporated with titanium dioxide (TiO2) nanoparticles as inorganic filler to enhance its performances. Polyethersulfone (PES) and polyvinyl acetate (PVAc) were blended at ratio of 90/10, together with 5 wt.% of TiO2 in dimethylformamide (DMF). The morphological structure of the membrane was analysed via FESEM. It shows that a rigid/non-porous membrane with slight nanoparticles agglomeration was formed. As interpreted from TGA, incorporating TiO2 nanoparticles into the polymer blend reduces the degradation temperature, increases wt.% of leftover residual thus proves an enhancement in thermal stability of the membrane. Moreover, the presence of TiO2 nanoparticles in the developed membrane possesses some effect on the spectral analysis as observed via FTIR spectroscopy. The permeability of CO2 gas is improved with addition of TiO2 nanoparticles within the blend membrane and better selectivity of CO2/CH4 is observed.

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Synthesis of Imidazolium based PILs and Investigation of Their Blend Membranes for Gas Separation

Membranes ◽

10.3390/membranes9120164 ◽

2019 ◽

Vol 9 (12) ◽

pp. 164

Author(s):

Thanasis Chouliaras ◽

Aristofanis Vollas ◽

Theophilos Ioannides ◽

Valadoula Deimede ◽

Joannis Kallitsis

Keyword(s):

Glass Transition ◽

Acrylic Acid ◽

Gas Separation ◽

Two Phase ◽

Polar Groups ◽

Film Forming ◽

Wide Range ◽

Blend Membranes ◽

Separation Behavior ◽

Anion Type

Polymeric (ionic liquid) (PIL) copolymers bearing cationic imidazolium pendants and polar acrylic acid groups (P(VBCImY-co-AAx)), which both favor the interaction with CO2 molecules, have been synthesized and blended with film forming, high glass transition temperature aromatic polyether-based pyridinium PILs (PILPyr). The blend membranes based on the above combination have been prepared and characterized in respect to their thermal and morphological behavior as well as to their gas separation properties. The used copolymers and blends showed a wide range of glass transition temperatures from 32 to 286 °C, while blends exhibited two phase morphology despite the presence of polar groups in the blend components that could participate in specific interactions. Finally, the membranes were studied in terms of their gas separation behavior. It revealed that blend composition, counter anion type and acrylic acid molar percentage affect the gas separation properties. In particular, PILPyr-TFSI/P(VBCImTFSI-co-AA20) blend with 80/20 composition shows CO2 permeability of 7.00 Barrer and quite high selectivity of 103 for the CO2/CH4 gas pair. Even higher CO2/CH4. selectivity of 154 was achieved for PILPyr-BF4/P(VBCImBF4-co-AA10) blend with composition 70/30.

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