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

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.

Performance Enhancement of Polymeric Blend Membranes Incorporation of Methyl Diethanol amine for CO2/CH4 Separation

2019 ◽  
Vol 41 (3) ◽  
pp. 523-523
Author(s):  
Asim Mushtaq Asim Mushtaq ◽  
Hilmi Mukhtar and Azmi Mohd Shariff Hilmi Mukhtar and Azmi Mohd Shariff
Keyword(s):  
Gas Separation ◽  
Polymer Blend ◽  
Separation Factor ◽  
Polyvinyl Acetate ◽  
Performance Enhancement ◽  
Polymer Membranes ◽  
Operating Pressure ◽  
Blend Membranes ◽  
Day By Day ◽  
Polymeric Blend

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.

Fabrication and characterization of polyetherimide/polyvinyl acetate polymer blend membranes for CO2/CH4separation

2018 ◽  
Vol 59 (S1) ◽  
pp. E293-E301 ◽  
Author(s):  
Hafiz Abdul Mannan ◽  
Tan Ming Yih ◽  
Rizwan Nasir ◽  
Hilmi Muhktar ◽  
Dzeti Farhah Mohshim
Keyword(s):  
Polymer Blend ◽  
Polyvinyl Acetate ◽  
Blend Membranes ◽  
Fabrication And Characterization

Effect of TiO2 Incorporation on Separation Performance of Pure PES and PES/PVAc Blend Membranes

2018 ◽  
Vol 923 ◽  
pp. 35-39 ◽  
Author(s):  
Mohd Afzan Abdullah ◽  
Hilmi Mukhtar ◽  
Yeong Yin Fong ◽  
Maizatul Shima Shaharun ◽  
Hafiz Abdul Mannan
Keyword(s):  
Thermal Stability ◽  
Polymer Blend ◽  
Polyvinyl Acetate ◽  
Research Work ◽  
The Other ◽  
Mixed Matrix Membranes ◽  
Separation Performance ◽  
Mixed Matrix ◽  
Blend Membranes ◽  
Thermal Stability Of

In this research work, polyethersulfone (PES) and polyethersulfone/polyvinyl acetate (PES/PVAc) blend were incorporated with 10 wt.% of TiO2 nanoparticles to form mixed matrix membranes (MMM). FESEM and TGA were utilized respectively to scrutinize the morphology and thermal stability of the developed membranes. Permeation tests of ideal CO2 and CH4 gases were also conducted to assess the separation performance of resultant membranes. The PES/PVAc/TiO2 polymer blend MMM was found to be the most thermally resistant and has the highest CO2 permeability and CO2/CH4 selectivity as compared to the other membranes.

A SEM/TEM examination of a ceramic membrane

1986 ◽  
Vol 44 ◽  
pp. 682-683
Author(s):  
C.E. Voegele-Kliewer ◽  
A.D. McMaster ◽  
G.W. Dirks
Keyword(s):  
Electron Microscopy ◽  
Gas Separation ◽  
Ceramic Membrane ◽  
Hydrogen Iodide ◽  
Separation Processes ◽  
Corning Glass ◽  
Gas Transport Properties ◽  
Porous Microstructure ◽  
Microscopy Techniques ◽  
The Relationship

Materials other than polymers, e.g. ceramic silicates, are currently being investigated for gas separation processes. The permeation characteristics of one such material, Vycor (Corning Glass #1370), have been reported for the separation of hydrogen from hydrogen iodide. This paper will describe the electron microscopy techniques applied to reveal the porous microstructure of a Vycor membrane. The application of these techniques has led to an increased understanding in the relationship between the substructure and the gas transport properties of this material.

scholarly journals Raman Sensor for the Determination of Gas Solubility

Physchem ◽  
2021 ◽  
Vol 1 (2) ◽  
pp. 176-188
Author(s):  
Gregor Lipinski ◽  
Markus Richter
Keyword(s):  
Carbon Dioxide ◽  
Gas Separation ◽  
Accurate Determination ◽  
Measurement Techniques ◽  
Screening Tools ◽  
Measuring System ◽  
Separation Processes ◽  
Use Of Resources ◽  
Gas Solubilities

Efficient and environmentally responsible use of resources requires the development and optimization of gas separation processes. A promising approach is the use of liquids that are designed for specific tasks, e.g., the capture of carbon dioxide or other greenhouse gases. This requires an accurate determination of gas solubilities for a broad range of temperatures and pressures. However, state of the art measurement techniques are often very time consuming or exhibit other pitfalls that prevent their use as efficient screening tools. Here, we show that the application of Raman spectroscopy through a compact measuring system can simplify data acquisition for the determination of gas solubilities in liquids. To demonstrate that this approach is expedient, we determined gas solubilities of carbon dioxide in water for three isotherms T = (288.15, 293.15, 298.15) K over a pressure range from p = (0.5–5) MPa and in three imidazolium-based ionic liquids for one isotherm T = 298.15 K at pressures from p = (0.1–5) MPa. When compared to data in the literature, all results are within the reported uncertainties of the measurement techniques involved. The developed analysis method eliminates the need for a lengthy volume or mass calibration of the sample prior to the measurements and, therefore, allows for fast screening of samples, which can help to advance gas separation processes in scientific and industrial applications.

Separator for lithium-sulfur battery based on polymer blend membrane

2017 ◽  
Vol 363 ◽  
pp. 384-391 ◽  
Author(s):  
Anne Freitag ◽  
Manfred Stamm ◽  
Leonid Ionov
Keyword(s):  
Polymer Blend ◽  
Blend Membrane ◽  
Lithium Sulfur Battery ◽  
Sulfur Battery ◽  
Lithium Sulfur

scholarly journals Metal-Organic Framework Based Membranes for Gas Separation Processes

2012 ◽  
Vol 44 ◽  
pp. 1991-1992
Author(s):  
L.A. Neves ◽  
N. Barreto ◽  
J.C. Crespo ◽  
I.M. Coelhoso
Keyword(s):  
Gas Separation ◽  
Metal Organic Framework ◽  
Separation Processes ◽  
Metal Organic ◽  
Organic Framework

Olefin separation using silver impregnated ion-exchange membranes and silver salt/polymer blend membranes

1996 ◽  
Vol 117 (1-2) ◽  
pp. 151-161 ◽  
Author(s):  
Takeo Yamaguchi ◽  
Chelsey Baertsch ◽  
Carl A. Koval ◽  
Richard D. Noble ◽  
Christopher N. Bowman
Keyword(s):  
Ion Exchange ◽  
Polymer Blend ◽  
Silver Salt ◽  
Ion Exchange Membranes ◽  
Blend Membranes

scholarly journals A radical polymer for highly efficient solar evaporation and gas separation

2021 ◽  
Author(s):  
Wei Liu ◽  
Ming Yang ◽  
Jing Liu ◽  
Meijia Yang ◽  
Jing Li ◽  
...  
Keyword(s):  
Gas Separation ◽  
Membrane Separation ◽  
Hydrogen Separation ◽  
Solar Irradiation ◽  
Separation Processes ◽  
Highly Efficient ◽  
Separation Membranes ◽  
Gas Separation Membranes ◽  
Transport Channels ◽  
The Impact

Abstract The unique magnetic, electronic and optical features derived from their unpaired electrons have made radical polymers an attractive material platform for various applications. Here, we report solution-processable radical polymer membranes with multi-level porosities and study the impact of free radicals on important membrane separation processes including solar vapor generation, hydrogen separation and CO2 capture. The radical polymer is a supreme light absorber over the full solar irradiation range with sufficient water transport channels, leading to a highly efficient solar evaporation membrane. In addition, the radical polymer with micropores and adjustable functional groups are broad-spectrum gas separation membranes for both hydrogen separation and CO2 capture. First principle calculations indicate that the conjugated polymeric network bearing radicals is more chemically reactive with CO2, compared with H2, N2 and CH4. This is evidenced by a high CO2 permeability in gas separation membranes made of the conjugated radical polymer.

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