Efficient selective methylene blue adsorption by polyurethane/montmorillonite‐based antifouling electrospun composite membranes

Juraij, K.; Vasudevan, Suni; Sujith, A.

doi:10.1002/app.53464

Cited by 5 publications

(4 citation statements)

References 73 publications

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“…20-PGT showed the highest porosity of 61%. This enhanced porosity can offer better filtration performance for the composite samples . A gradual decrease in the pore size was observed as it moved from electrospun PU to 20-PGT.…”

Section: Resultsmentioning

confidence: 99%

“…By using eq , the porosity (ε%) of electrospun samples was estimated ε = ( W w − W d ) / ρ normalw ( W w − W d ) / ρ normalw + ( W d / ρ P U ) × 100 where W w (g) and W d (g) denote the mass of wet nanofibrous membranes and the dry fibrous membrane, respectively.…”

Section: Methodsmentioning

confidence: 99%

“…This enhanced porosity can offer better filtration performance for the composite samples. 26 A gradual decrease in the pore size was observed as it moved from electrospun PU to 20-PGT. The electrospun PU shows the largest pore size of 1309 nm, and 20-PGT showed the relatively smallest pore size among all PGT composite membranes.…”

Section: Basic Materials Characterization Of Electrospun Composite Me...mentioning

confidence: 99%

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Electrospun Polyurethane Nanofiber Membranes for Microplastic and Nanoplastic Separation

Juraij

Ammed

Chinglenthoiba

et al. 2023

ACS Appl. Nano Mater.

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Multifunctional materials for industrial wastewater treatment are in high demand due to the contamination of microand nanoplastics (MNPs) and dyes. Herein, we demonstrate a polyurethane-based (PU) electrospun composite membrane for MNP separation and selective methylene blue (MB) adsorption. The optimized 20 wt % graphene oxide-montmorillonite (GO-Mt)-loaded nanofibrous composite membrane (20-PGT) exhibited its superhydrophilicity with a water contact angle of 0°and high water flux. It displayed a maximum pressure-driven water flow of 8163 L m −2 h −1 and a gravity-driven water flux of 793 L m −2 h −1 . Three model MNPs, such as acrylonitrile butadiene styrene (ABS), polystyrene (PS), and poly(methyl methacrylate) (PMMA) with various sizes, have been demonstrated. The adsorptive separation and size-exclusive interception mechanisms were observed for nanoplastics (NPs) and microplastics (MPs), respectively. Cake formation, intermediate blocking, and standard blocking mechanisms were followed during the filtration of ABS MPs, PMMA NPs, and PS NPs, respectively. Additionally, the composite membrane exhibited selective MB adsorption from the mixture of dyes, with a maximum adsorption capacity of 417 mg g −1 . Langmuir adsorption isotherm and pseudo-second-order kinetics define the adsorption isotherm and adsorption kinetics, respectively. The fabricated, robust fibrous composite membrane opens a wider door for the removal of MNPs and MB from contaminated water.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Basic Materials Characterization Of Electrospun Composite Me...mentioning

confidence: 99%

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Electrospun Polyurethane Nanofiber Membranes for Microplastic and Nanoplastic Separation

Juraij

Ammed

Chinglenthoiba

et al. 2023

ACS Appl. Nano Mater.

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“…Another type of nanoparticles, montmorillonites (MMTs), can enhance the hydrophilicity, dye absorption capacity and antifouling property of fibrous polyurethane (PU) membranes. Such nanocomposite materials reinforced with 20 wt% MMTs yielded a smaller water contact angle of 57° when compared with neat fibrous PU with a contact angle of 117°, along with high water flux and oil rejection, and they are thus able to meet the requirement of antifouling membranes used for waste-water treatment [ 14 ]. Maamoun et al [ 15 ] utilised HNTs to promote the sound absorption capability of PU.…”

Section: Introductionmentioning

confidence: 99%

Co-Influence of Nanofiller Content and 3D Printing Parameters on Mechanical Properties of Thermoplastic Polyurethane (TPU)/Halloysite Nanotube (HNT) Nanocomposites

et al. 2023

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Thermoplastic polyurethane (TPU) belongs to a polyurethane family that possesses an elongation much higher than 300%, despite having low mechanical strength, which can be overcome by incorporating clay-based halloysite nanotubes (HNTs) as additives to manufacture TPU/HNT nanocomposites. This paper focuses on the co-influence of HNT content and 3D printing parameters on the mechanical properties of 3D printed TPU/HNT nanocomposites in terms of tensile properties, hardness, and abrasion resistance via fused deposition modelling (FDM). The optimum factor-level combination for different responses was determined with the aid of robust statistical Taguchi design of experiments (DoEs). Material characterisation was also carried out to evaluate the surface morphology, nanofiller dispersion, chemical structure, thermal stability, and phase behaviour corresponding to the DoE results obtained. It is evidently shown that HNT level and infill density play a significant role in impacting mechanical properties of 3D-printed TPU/HNT nanocomposites.

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Magnetized CNTs incorporated MBA cross‐linked guar gum nano‐composite for methylene blue dye removal

Sayana,

Prajwal,

Deeksha

et al. 2023

J of Applied Polymer Sci

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In the present work, a magnetized multiwalled carbon nanotube dispersed in chemically cross‐linked gaur gum was developed as a nano‐composite adsorbent material for the removal of dye from wastewater. The gaur gum, a bio‐macromolecule was chemically modified by cross‐linking with methylene bis‐acrylamide in the presence of sodium hydroxide as a novel approach to prepare the gel matrix. The magnetite nanoparticles loaded multiwalled carbon nanotubes were dispersed in methylene bis‐acrylamide cross‐linked gaur gum gel during gelation. The nano‐composite was characterized for morphological, spectral, and analytical data. The solid form of the nano‐composite was evaluated as an adsorbent material for the treatment of water containing methylene blue dye molecules as pollutants by the spectrophotometric method. Adsorption isotherm studies suggested that the Freundlich model was the befitting model for adsorption, indicating the multilayered adsorption and the kinetic study revealed the adsorption to occur by a pseudo‐second‐order kinetic process. The novel nano‐composite is found to be a promising material for the adsorptive removal of dye molecules from dye‐contaminated wastewater. The adsorption capacity was observed to be 11 mg/g of the material.

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Efficient selective methylene blue adsorption by polyurethane/montmorillonite‐based antifouling electrospun composite membranes

Cited by 5 publications

References 73 publications

Electrospun Polyurethane Nanofiber Membranes for Microplastic and Nanoplastic Separation

Electrospun Polyurethane Nanofiber Membranes for Microplastic and Nanoplastic Separation

Co-Influence of Nanofiller Content and 3D Printing Parameters on Mechanical Properties of Thermoplastic Polyurethane (TPU)/Halloysite Nanotube (HNT) Nanocomposites

Magnetized CNTs incorporated MBA cross‐linked guar gum nano‐composite for methylene blue dye removal

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