Rapid Mass Transport in Mixed Matrix Nanotube/Polymer Membranes

Gusev, Andrei A.; Guseva, Olga

doi:10.1002/adma.200602018

Cited by 40 publications

(20 citation statements)

References 31 publications

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“…Among nanomaterials, carbon nanotube (CNT) that was first identified by Iijima Sumio in 1991 displays outstanding electrical, optical and mechanical properties and has been utilized in wide areas of engineering and chemistry fields. Particularly, CNT has been thoroughly studied for use in the areas of fuel cell, sensor, electrode of lithium battery, nano-probe, drug delivery, gas separation, display, energy storage, ion exchange and filters (Ajayan 1999;Nikolaev et al 1999;Couvreur et al 2002;Cicero et al 2008;Gusev and Guseva 2007;Coleman et al 2006).…”

Section: Introductionmentioning

confidence: 99%

Modification of thin-film polyamide membrane with multi-walled carbon nanotubes by interfacial polymerization

et al. 2017

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Polyamide thin-film composite (TFC) was fabricated on polysulfone (PS-20) base by interfacial polymerization of aqueous m-phenylenediamine (MPD) solution and 1,3,5-benzenetricarbonyl trichloride (TMC) in hexane organic solution. Multi-wall carbon nanotubes (MWCNT) were carboxylated by heating MWCNT powder in a mixture of HNO 3 and H 2 SO 4 (1:3 v/v) at 70°C under constant sonication for different periods. Polyamide nanocomposites were prepared by incorporating MWCNT and the carboxylated MWCNT (MWCNT-COOH) at different concentrations (0.001-0.009 wt%). The developed composites were analyzed by Fourier transform infrared spectroscopy-attenuated total reflection, scanning electron microscopy, transmission electron microscopy, contact angle measurement, determination of salt rejection and water permeate flux capabilities. The surface morphological studies displayed that the amalgamation of MWCNT considerably changed the surface properties of modified membranes. The surface hydrophilicity was increased as observed in the enhancement in water flux and pure water permeance, due to the presence of hydrophilic nanotubes. Salt rejection was obtained between 94 and 99% and varied water flux values for TFC-reference membrane, pristine-MWCNT in MPD, pristine-MWCNT in TMC and MWCNT-COOH in MPD were 20.5, 38, 40 and 43 L/m 2 h. The water flux and salt rejection performances revealed that the MWCNT-COOH membrane was superior membrane as compared to the other prepared membranes.

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Section: Introductionmentioning

confidence: 99%

Modification of thin-film polyamide membrane with multi-walled carbon nanotubes by interfacial polymerization

et al. 2017

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“…For mixed matrix membranes, Gusev and Guseva [160] proved that nanotube/polymer membranes can favorably combine the high-flux performance of nanotubes with the intrinsic selectivity of a polymer matrix. Sharma et al [161] dispersed MWCNTs and SWCNTs in polycarbonate and describe a procedure for aligning the nanotubes, using a DC-electric field of 500 V/cm.…”

Section: Gas Separationmentioning

confidence: 99%

The Separation Power of Nanotubes in Membranes: A Review

Bruggen

2012

ISRN Nanotechnology

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Research on mixed matrix membranes in which nanoparticles are used to enhance the membrane's performance in terms of flux, separation, and fouling resistance has boomed in the last years. This review probes on the specific features and benefits of one specific type of nanoparticles with a well-defined cylindrical structure, known as nanotubes. Nanotube structures for potential use in membranes are reviewed. These comprise mainly single-wall carbon nanotubes (SWCNTs) and multiwall carbon nanotubes (MWCNTs), but also other structures and materials, which are less studied for membrane applications, can be used. Important issues related to polymer-nanotube interactions such as dispersion and alignment are outlined, and a categorization is made of the resultant membranes. Applications are reviewed in four different areas, that is, gas separation, water filtration, drug delivery, and fuel cells.

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“…It is worth noting that D band is observed when there are symmetrical breaking of the sp 2 bonding lattices located in the edge site and defects of the graphite network. In our case, the choice of a relatively short CNT was based on the effect of the aspect ratio of the nanotubes in permeability 9 . As the result of increasing MWCNT content, the bands typical of the solid phase increase, while the ones related to the PDMS content decreased.…”

Section: Infrared and Raman Spectroscopymentioning

confidence: 99%

“…Gusev and Guseva developed a coupled-form finite element approach to estimate the transport properties in CNT-filled polymer matrix membranes. The orientation, content and aspect ratio of defect-free open-ended nanotubes were studied and demonstrated that the addition of CNT can improve membrane flux with maintenance of polymer intrinsic selectivity 9 . Specifically, it was shown that the permeability is directly related to the product of CNT aspect ratio and volume fraction up to 400 9 .…”

mentioning

confidence: 99%

Polydimethylsiloxane Membranes Containing Multi-walled Carbon Nanotubes for Gas Separation

et al. 2017

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Polydimethylsiloxane (PDMS) membranes with different concentrations of multi-walled carbon nanotubes were prepared in order to evaluate their gas separation performances. Mixed matrix membranes were characterized by scanning electron microscopy, thermogravimetric analysis, Fourier transformed infrared, positron annihilation lifetime and Raman spectroscopies and X-ray diffraction. The permeabilities to CO 2 , CH 4 , N 2 and O 2 were determined. No phase separation was noticed. For carbon nanotubes content of 1 wt%, it was shown a decrease in membrane permeability with slight increase in ideal selectivity, compared to pure PDMS. However, the increase in the filler load up to 6.7 wt% increased the free volume average size of the membranes, improving the contribution of the diffusion to the transport and decreasing ideal selectivities of CO 2 /CH 4 , CO 2 /N 2 and O 2 /N 2 .

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Rapid Mass Transport in Mixed Matrix Nanotube/Polymer Membranes

Cited by 40 publications

References 31 publications

Modification of thin-film polyamide membrane with multi-walled carbon nanotubes by interfacial polymerization

Modification of thin-film polyamide membrane with multi-walled carbon nanotubes by interfacial polymerization

The Separation Power of Nanotubes in Membranes: A Review

Polydimethylsiloxane Membranes Containing Multi-walled Carbon Nanotubes for Gas Separation

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