Fabrication and modification of cellulose acetate based mixed matrix membrane: Gas separation and physical properties

Moghadassi, Abdolreza; Rajabi, Zahra; Hosseini, S.M.; Mohammadi, Maryam

doi:10.1016/j.jiec.2013.06.042

Cited by 80 publications

(40 citation statements)

References 53 publications

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“…Therefore, these apparent shortcomings in the CA polymeric matrix can be improved by either incorporating inorganic filler as additives, or by blending with some other polymers. In this regard, various kinds of inorganic fillers, such as zeolites [18], transition metal complexes [19], alumina, titania, multi-walled carbon nano tube (MWCN) [20,21], titanium silicon oxide (TiSiO 4 ) nanoparticles [22] and silicon species [23], have been utilized previously as additives in CA polymer to enhance its structural properties. Moreover, some polymers, such as poly (methyl methyacrylate) [17,24] and poly (ethylene glycol) [25], have also been blended with CA, and a cellulose derivative containing an adamantine group [26] was synthesized to overcome the deficiency in the CA matrix.…”

Section: Introductionmentioning

confidence: 99%

Comparison of silica and novel functionalized silica-based cellulose acetate hybrid membranes in gas permeation study

et al. 2015

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Cellulose acetate (CA) is a widely applied glassy polymer in the preparation of gas separation membranes. In the present study, hybrid membranes were prepared by incorporating silica (Si) and silica functionalized with ptetranitrocalix[4]arene (Si-CL) into the CA matrix, and their gas permeation abilities were explored with regard to CO 2 , N 2 and CH 4 gases. The diffusion-induced phase separation (DIPS) method was adopted to make pure CA, CA/Si, and CA/Si-CL hybrid membranes. The concentration of Si-CL was varied as 10 wt%, 20 wt% and 30 wt% in the hybrid membranes. The analytical techniques employed for membrane characterization were Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), atomic force microscopy (AFM), and X ray-diffraction (XRD) analysis. The proper interaction of Si and Si-CL was confirmed by FTIR analysis. However, the homogenous surface textures of CA/Si, and CA/Si-CL hybrid membranes were evaluated through SEM. Furthermore, AFM analysis was performed to examine the surface roughness of these hybrid membranes. The changes in the crystallinity of CA were also examined by XRD analysis after adding Si and Si-CL. Moreover, the tensile strength of the CA/Si hybrid membrane was found to be better than that of CA/Si-CL hybrid membranes. CO 2 , CH 4 and N 2 gases were used for gas permeation experiments at 400 kPa. Among CO 2 and CH 4 gases, the permeability of N 2 was high in CA/Si-CL hybrid membranes, and N 2 /CO 2 selectivity of these membranes was 22.6.

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Section: Introductionmentioning

confidence: 99%

Comparison of silica and novel functionalized silica-based cellulose acetate hybrid membranes in gas permeation study

et al. 2015

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“…However, void generation was observed in sub layers indicating the increase in free volume in the polymer chain segments. This is probably due to the interaction of inorganic nanotubes and polymer chains, which may disturb the packing of the polymeric chains and hence enhance the free volume [14]. Figure 5 shows the line graph of uniaxial tensile testing of pure polymer and nanocomposite membranes having different concentration of multiwalled carbon nanotubes (5, 10, 15, 20 wt%), including elongation at break (Fig.…”

Section: Results and Discussion Scanning Electron Microscopy (Sem) Amentioning

confidence: 99%

“…Kinetic diameters are listed in Table 3. Moreover the functional groups like carboxylic group attached on the surfaces of inorganic nanofillers have some special interaction with the polar gases like ammonia enhances the gas permeability in nanocomposite membranes [14]. In this work, carboxylic group functionalized multiwalled carbon nanotubes were used as nanofiller hence higher permeability of ammonia is justified.…”

Section: Effect Of Mwcnts Loading Ratio On Gas Permeability and Permsmentioning

confidence: 99%

“…Moreover the interaction between the polymer chains and MWCNTs may disturb the packing of polymer chains consequently increase the voids and free volume [14]. Gas molecules can easily pass through these voids which enhances the gas permeability.…”

Section: Effect Of Mwcnts Loading Ratio On Gas Permeability and Permsmentioning

confidence: 99%

“…Among them, polymeric membranes have been utilized in a broad range of industrial applications. Some of the polymeric materials that have shown great potential for gas separation include polyimide [10], polypropylene [11], poly(methyl methacrylate) [12],polyamides [13] and cellulose materials [7,14]. Major improvements in the performance of these polymeric membranes have been made in last few years.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis, Characterization and NH3/N2 Gas Permeation Study of Nanocomposite Membranes

2016

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Carbon nanotubes have exceptional mechanical properties which make them very attractive for the development of composite membranes. In this research, NH 3 /N 2 gas permeation behavior of flat sheet composite membranes was examined. The cellulose acetate-multiwalled carbon nanotubes composite membranes were synthesized using solution casting method. The morphology and dispersion of carbon nanotubes were observed through SEM. However, the composite membranes were also characterized using several analytical techniques such as X-ray diffraction analysis, tensile testing analysis, and thermal gravimetric analysis. Characterization of these membranes depicted that carboxylic group functionalized MWCNTs are extremely compatible with CA. The permeation experiments were performed with NH 3 and N 2 to explore the host-guest interaction of MWCNTs with chosen gases. The permeability of NH 3 was found pronounced compared to N 2 . The NH 3 /N 2 selectivity up to 90 was documented.

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Development of Membranes from Biobased Materials and Their Applications

Khulbe

Matsuura

2017

Handbook of Composites From Renewable Materials

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Fabrication and modification of cellulose acetate based mixed matrix membrane: Gas separation and physical properties

Cited by 80 publications

References 53 publications

Comparison of silica and novel functionalized silica-based cellulose acetate hybrid membranes in gas permeation study

Comparison of silica and novel functionalized silica-based cellulose acetate hybrid membranes in gas permeation study

Synthesis, Characterization and NH3/N2 Gas Permeation Study of Nanocomposite Membranes

Development of Membranes from Biobased Materials and Their Applications

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