Polysulfone/halloysite composite membranes with low fouling properties and enhanced compaction resistance

Kamal, Nagla; Ahzi, Saı̈d; Кочкодан, Віктор

doi:10.1016/j.clay.2020.105873

Cited by 34 publications

(22 citation statements)

References 102 publications

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“…The authors investigated the morphomechanical properties enhancement of chitosan–agarose–gelatine matrix after HNT additivation, in order to design the implantable 3D cell scaffolds. Similar studies were performed by Kamal et al [ 61 ] on polysulphone membrane doped with HNTs (0.2 and 5.0 wt%). In this work, operating in tapping-QNM in air conditioning and at room temperature, the membrane characterization was performed.…”

Section: Afm Investigations Of Hnt Nanocompositessupporting

confidence: 80%

AFM Characterization of Halloysite Clay Nanocomposites’ Superficial Properties: Current State-of-the-Art and Perspectives

et al. 2022

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Natural halloysite clay nanotubes (HNTs) are versatile inorganic reinforcing materials for creating hybrid composites. Upon doping HNTs with polymers, coating, or loading them with bioactive molecules, the production of novel nanocomposites is possible, having specific features for several applications. To investigate HNTs composites nanostructures, AFM is a very powerful tool since it allows for performing nano-topographic and morpho-mechanical measurements in any environment (air or liquid) without treatment of samples, like electron microscopes require. In this review, we aimed to provide an overview of recent AFM investigations of HNTs and HNT nanocomposites for unveiling hidden characteristics inside them envisaging future perspectives for AFM as a smart device in nanomaterials characterization.

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Section: Afm Investigations Of Hnt Nanocompositessupporting

confidence: 80%

AFM Characterization of Halloysite Clay Nanocomposites’ Superficial Properties: Current State-of-the-Art and Perspectives

et al. 2022

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“…This observation can be attributed to contributions from the well-dispersed non-agglomerated fillers used and the polymeric chains experiencing good surface adhesion with the fillers. The long-life performance of these CMBs would be good because of the strong interaction between the fillers and the polymers via multiple hydrogen bonding formations [ 49 ]. The tensile strength and Young’s modulus simultaneous increment can be attributed to the delay of cracks because the polymer segments experiencing the coupling behavior of the fillers via physical transfusion [ 50 ].…”

Section: Resultsmentioning

confidence: 99%

Enhanced Gas Separation Prowess Using Functionalized Lignin-Free Lignocellulosic Biomass/Polysulfone Composite Membranes

2021

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Delignified lignocellulosic biomass was functionalized with amine groups. Then, the pretreated lignin-free date pits cellulose and the amine-functionalized-date pits cellulose (0–5 wt%) were incorporated into a polysulfone polymer matrix to fabricate composite membranes. The amine groups give additional hydrogen bonding to those existing from the hydroxyl groups in the date pits cellulose. The approach gives an efficient avenue to enhance the CO2 molecules’ transport pathways through the membrane matrix. The interactions between phases were investigated via Fourier transformed infrared spectroscopy (FTIR) and scanning electron microscopy (SEM), whereas pure gases (CO2 and N2) were used to evaluate the gas separation performances. Additionally, the thermal and mechanical properties of the fabricated composites were tested. The pure polysulfone membrane achieved an optimum separation performance at 4 Bar. The optimum separation performance for the composite membranes is achieved at 2 wt%. About 32% and 33% increments of the ideal CO2/N2 selectivity is achieved for the lignin-free date pits cellulose composite membrane and the amine-functionalized-date pits cellulose composite membrane, respectively.

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“…45,46 The bands at 1055, 1672, and 3205 cm À1 are assigned to the C O, 46 C O 47 and C OH, 45 stretching; 1239 cm À1 for Ar O Ar symmetric stretching; 1149 cm À1 for Ar SO 2 Ar symmetric stretching; and 833 cm À1 is attributed to C-H rocking. 48 Figure 3c shows that characteristic PSF absorption bands were identified on all membranes. However, a new absorption peak at 1738 cm À1 can be observed for the MMMs, as highlighted in yellow.…”

Section: Membrane Characterizationmentioning

confidence: 94%

Asymmetric oxygen‐functionalized carbon nanotubes dispersed in polysulfone forCO₂separation

Flores

Figueiredo

2022

J of Applied Polymer Sci

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Carbon dioxide separation from flue gases is an important challenge to be faced. Membrane processes are a promising alternative to increase technical and economical constraints once the development of materials with superior characteristics are attained. Integrally asymmetric mixed matrix membranes (MMMs) were prepared by dry/wet phase inversion process of polysulfone (PSF) containing oxygen‐functionalized multiwalled carbon nanotubes (MWNT‐O). Fourier transform infrared (FTIR) spectroscopy confirmed the presence of MWNT‐O in MMMs. Thermal gravimetric analysis (TGA) showed that MMMs are stable up to 150°C. Photomicrographs from scanning electron microscopy (SEM) revealed that MMMs consist of an asymmetric structure with a skin layer supported on a sponge‐like substructure. The pore size of the support of MMMs increased with MWNT‐O content from 0.4 to 0.8 wt.% and the thickness of the dense layer decreased. However, when the content of MWNT‐O increased to 1 wt.%, the pore size decreased, and the dense layer increased. Therefore, MMMs changed CO2 separation performance. For 1 wt.% MWNT‐O loading compared to the neat polymer, CO2 permeance and CO2/N2 selectivity was increased from 1.5 to 2.7 GPU, and from 9.5 to 14.3, respectively.

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Polysulfone/halloysite composite membranes with low fouling properties and enhanced compaction resistance

Cited by 34 publications

References 102 publications

AFM Characterization of Halloysite Clay Nanocomposites’ Superficial Properties: Current State-of-the-Art and Perspectives

AFM Characterization of Halloysite Clay Nanocomposites’ Superficial Properties: Current State-of-the-Art and Perspectives

Enhanced Gas Separation Prowess Using Functionalized Lignin-Free Lignocellulosic Biomass/Polysulfone Composite Membranes

Asymmetric oxygen‐functionalized carbon nanotubes dispersed in polysulfone forCO₂separation

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Polysulfone/halloysite composite membranes with low fouling properties and enhanced compaction resistance

Cited by 34 publications

References 102 publications

AFM Characterization of Halloysite Clay Nanocomposites’ Superficial Properties: Current State-of-the-Art and Perspectives

AFM Characterization of Halloysite Clay Nanocomposites’ Superficial Properties: Current State-of-the-Art and Perspectives

Enhanced Gas Separation Prowess Using Functionalized Lignin-Free Lignocellulosic Biomass/Polysulfone Composite Membranes

Asymmetric oxygen‐functionalized carbon nanotubes dispersed in polysulfone forCO2separation

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Asymmetric oxygen‐functionalized carbon nanotubes dispersed in polysulfone forCO₂separation