Incorporation of Inorganic Carbon Nanotubes Fillers into the CA Polymeric Matrix for Improvement in CO&lt;sub&gt;2&lt;/sub&gt;/N&lt;sub&gt;2&lt;/sub&gt; Separation

Jawad, Zeinab Abbas; Ahmad, Amir; Low, Siew Chun; Zein, Sharif Hussein Sharif

doi:10.2174/1573413710666140922224633

Cited by 14 publications

(15 citation statements)

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“…18 There is also delayed kinetics in phase separation that allows the merging of domains that are polymer-lean below the membrane and air interface, thus resulting in more compaction of the polymer matrix. 14,18 As seen in Figure 5(g), M6 (400 µm) possesses a porous surface and has a dense skin-layer at thickness of 19.72 µm. This porous structure is formed due to the diffusion and displacement between the solvent and non-solvent regions in the casting film.…”

Section: Characterisation Of Membranementioning

confidence: 99%

“…The ultrasonic degasser was then used to eliminate existing gas bubbles in a 20 min duration after the cooling period was completed. 14 The membrane was cast using an automatic film applicator situated in a fume chamber at room temperatures with casting thickness of 250 µm. After the film was formed, the membrane was directly immersed into a coagulation bath of deionised water for 24 h to remove excess solvent content.…”

Section: Preparation Of Ca Membrane (Ca-m)mentioning

confidence: 99%

“…After the film was formed, the membrane was directly immersed into a coagulation bath of deionised water for 24 h to remove excess solvent content. 12,14,15 Membrane drying was then conducted using the solvent exchange method by immersing the span membrane in ethanol solution for 4 h followed by n-hexane solution for 1 h. 12,14 Lastly, the membrane film was placed in between two glass plates for a period of 24 h prior to use. 12…”

Section: Preparation Of Ca Membrane (Ca-m)mentioning

confidence: 99%

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Formation of Low Acetyl Content Cellulose Acetate Membrane for CO2/N2 Separation

Sugu¹,

Jawad²

2019

JPS

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The rising carbon dioxide (CO 2 ) emissions over the decades is known to be a huge contributor to the greenhouse effect. CO 2 capture and storage methods have been perceived as favourable solutions to prevent global warming and climate change rising from the greenhouse effect. One energy efficient technology for separating CO 2 is the development of high-performing CO 2 gas separating membranes. A variety of membrane-based gas separation technologies designed have shown promising results and are inexpensive. A high-performing membrane must have a defect-free, thin dense skin-layer with a porous sub-layer for support that permits great permeation rate and selectivity. Of all ranges of polymers used to make polymeric membranes for CO 2 /nitrogen (N 2 ) separation, cellulose acetate (CA) polymer membranes are known for their high CO 2 solubility. In this research, the effect of CA polymer concentrations at low acetyl group of 39.8% and casting thickness on the structure and morphologies of the membranes were studied. The CA polymer concentration was optimised from a range of 10 wt%, 15 wt% and 20 wt%, and the casting thickness was optimised from a range of 150 μm to 400 μm using wet-phase inversion technique. The results obtained exhibit a CA membrane with thin dense, selective skin-layer achieved at CA polymer concentration of 15 wt% and a casting thickness of 300 μm, with a CO 2 permeance rate of 401.173 ± 0.579 (GPU), N 2 permeance rate of 133.499 ± 0.148 (GPU) and selectivity of 3.009 ± 0.00656. This CA membrane is able to contribute to promising gas separation performances with enhanced physical and mechanical support by improvement of membrane permeance and selectivity towards CO 2 /N 2 separation performance.

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Section: Characterisation Of Membranementioning

confidence: 99%

Section: Preparation Of Ca Membrane (Ca-m)mentioning

confidence: 99%

Section: Preparation Of Ca Membrane (Ca-m)mentioning

confidence: 99%

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Formation of Low Acetyl Content Cellulose Acetate Membrane for CO2/N2 Separation

Sugu¹,

Jawad²

2019

JPS

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“…Finally, the final CA was stored and ready for further testing. 13 The percentage of polymer-solvent mixture was determined from previous works. 14,15 The casting thickness of the membrane was fixed at 250 μm and the composition for the membranes were illustrated in Table 1.…”

Section: Ca Membrane Fabricationmentioning

confidence: 99%

Preparation and Characterisation of Blend Cellulose Acetate Membrane for CO2/N2 Separation

Jin¹,

Jawad²,

Tan³

et al. 2020

JPS

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Among the carbon dioxide (CO 2) separation methods, the membrane separation technology has been mostly applied to reduce the CO 2 emission. Since most CO 2 are emitted from power generation plants, the CO 2 /nitrogen (N 2) separation was selected. In this project, the blend cellulose acetate (CA) membranes were prepared by mixing CA with 39% acetyl concentration (CA-39) and 56% acetyl content (CA-56) through the wet-phase inversion method. The CO 2 /N 2 separation performance was determined by evaluating the permeation of gases and the CO 2 /N 2 selectivity by modifying the polymer concentration. The characterisation of the membrane was carried out by using the scanning electron spectrometry (SEM) and attenuated total reflectance Fourier transform infrared spectrometry analysis (ATR-FTIR). The optimal membrane obtained was M3 with polymer concentration of 4:6 (CA-39:CA-56) that had defect-free membrane surface with smooth dense skin layer. The functional groups present enhanced the gas permeance rate. With regards to the gas permeation test, M3 presented the best CO 2 /N 2 separation performance with CO 2 permeance of 99.26 ± 3.08 GPU, N 2 permeance of 87.12 ± 0.81 GPU and CO 2 /N 2 selectivity of 1.139 ± 0.037. It is expected that the results obtained from this work can be applied to industries, such as the gas separation field or power generation plant, in order to reduce CO 2 emission.

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“…Different microstructures of the membrane platforms were prepared by dissolving a specic concentration of CA polymer in formic acid (FA) and acetic acid (AA) solvent, as per the membrane dope formulations tabulated in Table 1. The method is essentially the same as that given in our previous paper 35,43 with some adjustments. First, the polymer dopes were stirred at 250 rpm for 4 hours to ensure the complete dissolution of polymer and then the mixture was degassed to remove air bubbles.…”

Section: Membrane Preparationmentioning

confidence: 99%

Detection of mercury ions in water using a membrane-based colorimetric sensor

2018

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Incorporation of Inorganic Carbon Nanotubes Fillers into the CA Polymeric Matrix for Improvement in CO<sub>2</sub>/N<sub>2</sub> Separation

Cited by 14 publications

References 0 publications

Formation of Low Acetyl Content Cellulose Acetate Membrane for CO2/N2 Separation

Formation of Low Acetyl Content Cellulose Acetate Membrane for CO2/N2 Separation

Preparation and Characterisation of Blend Cellulose Acetate Membrane for CO2/N2 Separation

Detection of mercury ions in water using a membrane-based colorimetric sensor

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