Conductive Cotton Textile from Safely Functionalized Carbon Nanotubes

Rahman, Mohammad Jellur; Mieno, Tetsu

doi:10.1155/2015/978484

Cited by 48 publications

(38 citation statements)

References 28 publications

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“…Carboxylic functionalization increases the solubility of CNT in comparison to non-functionalized pristine CNT thus aiding in developing nanocomposites of high quality and distinctive optical properties [8]. Moreover, it enhances the CNT electrical conductivity and thermal stability to obtain, for example, a better conductive cotton textile [9]. Carboxylated CNT are suggested to be used in different products ranging from biomedical and therapeutic applications, gene delivery, cancer diagnosis to vaccination [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Genes expression profiling of alveolar macrophages exposed to non-functionalized, anionic and cationic multi-walled carbon nanotubes shows three different mechanisms of toxicity

et al. 2020

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Functionalized multi-walled carbon nanotubes (MWCNT) have become the focus of increased research interest, particularly in their application as tools in different areas, such as the biomedical field. Despite the benefits associated with functionalization of MWCNT, particularly in overcoming issues relating to solubility, several studies have demonstrated that these functionalized nanoparticles display different toxicity profiles. For this study, we aim to compare NR8383 cells responses to three well-characterized MWCNT with varying functional groups. This study employed cytotoxicity assays, transcriptomics and proteomics to assess their toxicity using NR8383 rat alveolar macrophages as an in vitro model. The study findings indicated that all MWCNT altered ribosomal protein translation, cytoskeleton arrangement and induced pro-inflammatory response. Only functionalized MWCNT alter mTOR signaling pathway in conjunction with increased Lamtor gene expression. Furthermore, the type of functionalization was also important, with cationic MWCNT activating the transcription factor EB and inducing autophagy while the anionic MWCNT altering eukaryotic translation initiation factor 4 (EIF4) and phosphoprotein 70 ribosomal protein S6 kinase (p70S6K) signaling pathway as well as upregulation Tlr2 gene expression. This study proposes that MWCNT toxicity mechanisms are functionalization dependent and provides evidence that inflammatory response is a key event of carbon nanotubes toxicity.© The Author(s) 2020. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article' s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article'

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Section: Introductionmentioning

confidence: 99%

Genes expression profiling of alveolar macrophages exposed to non-functionalized, anionic and cationic multi-walled carbon nanotubes shows three different mechanisms of toxicity

et al. 2020

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“…Here, an environmentally friendly approach to functionalizing CNTs has been described, which is developed to attach −COOH groups onto their surfaces, and carried out under a wet condition using citric acid solution in RF (13.56 MHz) oxygen plasma [48,49]. CNTs are first pretreated supersonically in ethanol.…”

Section: Methodology Of the Researchmentioning

confidence: 99%

“…For thermal analyses a thermogravimetric analyzer (Rigaku Thermo plus TG8120) is used, which is operated under air ambient at a heating rate of 10 K/min from room temperature to 973 K [48]. To obtain the cotton composite, f-CNTs are dispersed into water to produce stable [49]. A piece of 100% cotton (p-cotton) textile of ca.…”

Section: Characterizationsmentioning

confidence: 99%

Safer Production of Water Dispersible Carbon Nanotubes and Nanotube/Cotton Composite Materials

Rahman¹,

Mieno²

2016

Carbon Nanotubes - Current Progress of Their Polymer Composites

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Water-dispersible carbon nanotubes WD-CNTs have great importance in the fields of biotechnology, microelectronics, and composite materials. Sidewall functionalization is a popular method of enhancing their dispersibility in a solvent, which is usually achieved by strong acidic treatment. "ut, treatment under such harsh conditions deviates from green chemistry and degrades the structure and valuable properties of CNTs. "lternative safer and easier plasma method is discussed to produce functionalized CNTs fCNTs . The f-CNTs remain dispersed in water for more than month owing to the attachment of a large number of carboxyl groups onto their surfaces. The WD-CNTs are applied to produce conductive cotton textile for the next generation textile technologies. Nonconducting cotton textile becomes electroconductive by repeatedly dipping into the f-CNT-ink and drying in air. The f-CNTs uniformly and strongly cover the individual cotton fibers. "fter several cycle of dipping into the f-CNT-ink, the textile becomes conductive enough to be used as wire in lighting up an LED. "s a demonstration of practical use, the textile is shown as a conductive textile heater, where the textile can produce uniformly up to ca. °C within ca. min by applying an electric power of ca. . W/cm .

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“…Especially, homogeneous distribution of CNTs in the cellulose matrix has predominantly contributed to improve its characteristics. CNT forms a conducting network using its electron donating and accepting ability in the composite [6,[34][35][36]. These CNT/cellulose composite materials have some outstanding properties such as being highly strong, electrically and thermally conductive, and the usage of these materials have been widely investigated [35][36][37][38].…”

Section: Objective Of Cnt/cellulose Compositementioning

confidence: 99%

Production of Water Dispersible Carbon Nanotubes and Nanotube/Cellulose Composite

Maria¹,

Mieno²

2018

Carbon Nanotubes - Recent Progress

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Polymer wrapping methods have been used to disperse carbon nanotube (CNT) by using gelatin, an environment-friendly and easily decomposable biopolymer. The amino acid chain of gelatin becomes immobilized by the physical adsorption in the side wall of the CNTs through hydrophobic-hydrophobic interaction and results in the untangling of the CNT bundles. The dispersed solution remains stable for more than a month. Furthermore, this technique does not affect the physical properties of CNTs while enabling their dispersion in aqueous solutions. In addition, gelatin can be easily removed from the nanotubes after the dispersion of nanotubes by heating in water and filtration. Gelatin-dispersed CNTs are homogeneously mixed with the cellulose suspension and dried at room temperature to produce CNT/cellulose composite paper sheet. Adding multiwalled carbon nanotubes (MWNTs) in composite improves the mechanical, thermal, and electrical properties of cellulose. SEM investigation confirms the homogeneous distribution of MWNTs in the cellulose, which can be attributed to the improvement of its characteristics. Both sides of the CNT/cellulose sheet show uniform electrical conductivity, which is enhanced by increasing the MWNTs' content. IR image of the sheet clearly shows the temperature homogeneity of the surface. Thermal stability and the flame retardancy of the sheet are also found to be improved. The sheet has also strong absorbing of electromagnetic waves, which make them important for microwave technology applications.

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Conductive Cotton Textile from Safely Functionalized Carbon Nanotubes

Cited by 48 publications

References 28 publications

Genes expression profiling of alveolar macrophages exposed to non-functionalized, anionic and cationic multi-walled carbon nanotubes shows three different mechanisms of toxicity

Genes expression profiling of alveolar macrophages exposed to non-functionalized, anionic and cationic multi-walled carbon nanotubes shows three different mechanisms of toxicity

Safer Production of Water Dispersible Carbon Nanotubes and Nanotube/Cotton Composite Materials

Production of Water Dispersible Carbon Nanotubes and Nanotube/Cellulose Composite

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