Effect of dispersion of carbon nanotubes in polyacrylonitrile matrix on mechanical and thermal behavior of nanocomposites

Frączek, A.; Błażewicz, S.

doi:10.1088/1742-6596/146/1/012005

Cited by 8 publications

(9 citation statements)

References 19 publications

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“…After dispersion of carbon additives in DMF, PSU was added and the solution was mixed for 24 h on a magnetic stirrer. The proposed process of CNTs homogenization in the polymer, preceded by dispersion in solvent, results from previous experience of authors in the preparation of nanocomposites based on these nanoadditives [31,32]. A similar procedure for the preparation of nanotubes-PSU solutions has been proposed in other publications [24].…”

Section: Investigated Materialsmentioning

confidence: 96%

Polysulphone composite membranes modified with two types of carbon additives as a potential material for bone tissue regeneration

et al. 2017

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This study presents a detailed evaluation of the impact of carbon fibrous materials on the physicochemical properties of polysulphone (PSU) membranes and their preliminary osteoblast-like cells response in vitro. Multiwalled carbon nanotubes (MWCNTs) and short carbon fibres (SCFs) were incorporated into PSU and membranes were produced by the phase inversion method. Then, the physicochemical properties of the membranes' surface were investigated. Scanning electron microscopy (SEM) was used to evaluate microstructure and porosity. Surface properties such as roughness, wettability and surface energy were evaluated using atomic force microscopy (AFM), contact profilometry and a goniometer, respectively. The presence of carbon fibrous additives in the PSU matrix improved its hydrophilicity. Porosity and topography of the PSU membranes were also changed upon incorporation of carbon additives. The mechanical properties of the PSU membranes were improved after SCF addition. All physicochemical properties of the obtained composite membranes had significant impact on the osteoblast-like cells response. Preliminary viability tests indicated biocompatibility of all membranes.

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Section: Investigated Materialsmentioning

confidence: 96%

Polysulphone composite membranes modified with two types of carbon additives as a potential material for bone tissue regeneration

et al. 2017

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“…Further, due to the improved interaction of f-CNTs and polymer chains, the mechanical strength of the composite membrane increases. 17 High transmembrane pressure (TMP) changes the membrane structure in long-term operations, reduces porosity, and increases membrane resistant irreversibly. Improving the membrane mechanical strength can hinder or at best reduce these changes as well as prevent membrane tearing in modulation processes.…”

Section: Introductionmentioning

confidence: 99%

Improvement of fouling resistance and mechanical reinforcement of polyacrylonitrile membranes by amino‐functionalized multiwalled carbon nanotubes for membrane bioreactors applications

Iranpoury

Mehrnia

Jafari

et al. 2022

J of Applied Polymer Sci

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The goal of the current research is to simultaneously improve the fouling resistance and mechanical properties of polyacrylonitrile ultrafiltration membrane for membrane bioreactors (MBR) applications by a relatively easy method. For this purpose, amino-functionalized carbon nanotubes (NH 2 -MWCNTs) were employed, which have exceptional mechanical properties, hydrophilic functions, and good interaction with polyacrylonitrile. It was used to fabricate nanocomposite membranes with different MWCNTs contents. The rheological and thermodynamical aspects of the phase separation process were investigated to understand the mechanism of the membrane formation. The related characteristics including morphological, mechanical, and chemical properties of the membrane as well as its performance were studied. In the end, the synthesized membranes were used in an MBR setup for further investigations. The Pure water flux data shows considerable improvement from 810 LMH for the neat membrane to 1055 LMH for the 0.3 wt% NH 2 -MWCNTs nanocomposite membrane. Mechanical enhancement was confirmed with about a 24% increase in the tensile strength and 61% for elongation at break. The membrane with 0.3 wt% NH 2 -MWCNTs revealed the best porosity, fouling resistance, and performance in MBR with 95% flux recovery ratio and 64% improvement in permeated flux compared to the neat membrane.

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“…27 Multi-walled carbon nanotubes (MWCNTs) exhibit excellent mechanical, electrical, and magnetic properties as well as nanometer scale diameter and high aspect ratio, which make them an ideal reinforcing agent for high strength polymer composite. [28][29][30][31] It was also acknowledged that the mechanical properties of the membranes increased with the addition of the MWCNTs. 32,33 Xu et al 34 fabricated PVDF membranes via TIPS, and with the addition of oxidized MWCNTs, the hydrophilicity and anti-fouling ability of the membrane surface were improved.…”

Section: Introductionmentioning

confidence: 99%

“…Multi‐walled carbon nanotubes (MWCNTs) exhibit excellent mechanical, electrical, and magnetic properties as well as nanometer scale diameter and high aspect ratio, which make them an ideal reinforcing agent for high strength polymer composite . It was also acknowledged that the mechanical properties of the membranes increased with the addition of the MWCNTs .…”

Section: Introductionmentioning

confidence: 99%

Preparation of hydrolysis of poly(acrylonitrile‐co‐methyl acrylate) membranes via thermally induced phase separation: Effects of hydrolysis conditions and additives

Zhang

Han

Qian

et al. 2018

J of Applied Polymer Sci

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In this work, melt processable poly(acrylonitrile‐co‐methyl acrylate) [(P(AN‐MA)] was hydrolyzed first and then formed into microporous membrane via thermally induced phase separation. In order to optimize the hydrolysis condition and fabricate hydrophilic PAN‐based membranes, a series of hydrolysis experiments were performed to indicate the influence of hydrolysis temperature, alkaline species and time. The structure and properties of hydrolyzed P(AN‐MA) [H‐P(AN‐MA)] membranes were also investigated. It was found that with the increase of hydrolysis temperature, pure water flux (PWF) increased first and then decreased. When the hydrolysis temperature increased to 30 °C, the PWF of the H‐P(AN‐MA) membrane was up to the maximum of 6712.7 L/m2 h, which increased by 1661.6 L/m2 h, compared with the P(AN‐MA) membranes. When 1 wt % sodium dodecyl sulfate (SDS) was incorporated into the diluents, the PWF increased dramatically, especially in high hydrolysis temperature. When the hydrolysis temperature was up to 70 °C, the PWF of H‐P(AN‐MA) membranes containing 1 wt % SDS increased by 2.3 times compared to the sample without SDS under the same condition. With 2 wt % amino functionalized multi‐walled carbon nanotubes (MWCNTs‐NH2) employed as the additive, the tensile strength was up to 4.55 MPa. When 1 wt % SDS and 0.5 wt % MWCNTs‐NH2 were mixed together, the bovine serum albumin rejection increased from 31.2% to 40.9%. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46380.

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Effect of dispersion of carbon nanotubes in polyacrylonitrile matrix on mechanical and thermal behavior of nanocomposites

Cited by 8 publications

References 19 publications

Polysulphone composite membranes modified with two types of carbon additives as a potential material for bone tissue regeneration

Polysulphone composite membranes modified with two types of carbon additives as a potential material for bone tissue regeneration

Improvement of fouling resistance and mechanical reinforcement of polyacrylonitrile membranes by amino‐functionalized multiwalled carbon nanotubes for membrane bioreactors applications

Preparation of hydrolysis of poly(acrylonitrile‐co‐methyl acrylate) membranes via thermally induced phase separation: Effects of hydrolysis conditions and additives

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