Influence of modified perylene-3, 4, 9, 10-tetracarboxylate with alkali metals ions as surfactant on the yield of hydrothermal liquid-phase exfoliated graphene sheets

Ahmad, Nurin Jazlina; Mohamed, Rahmah; Malek, M. F.; Sanusi, Saedah Munirah; Muhamad, Mohd Razali; Ismail, A. S.; Mahmood, Mohamad Rusop

doi:10.1007/s42823-022-00442-7

Cited by 3 publications

(2 citation statements)

References 78 publications

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“…This nanomaterial possesses synergistic properties such as high thermal conductivity, specific surface area, mechanical strength and electron transport capacity. 11 Therefore, the arrangement of carbon atoms in the graphene structure, with strong covalent bonds between them, confers higher mechanical and thermal properties. [12][13][14] Moreover, the chemical transformation of graphite into GO results in highly oxygenated flakes with both epoxy and hydroxyl functional groups present on both the upper and lower planes, while carboxyl groups adhere to the edges of the graphene sheets.…”

Section: Introductionmentioning

confidence: 99%

“…GO is composed of sp 2 ‐hybridized carbon atoms arranged in a hexagonal‐shaped honeycomb lattice that forms a sheet a single atom thick. This nanomaterial possesses synergistic properties such as high thermal conductivity, specific surface area, mechanical strength and electron transport capacity 11 . Therefore, the arrangement of carbon atoms in the graphene structure, with strong covalent bonds between them, confers higher mechanical and thermal properties 12–14 .…”

Section: Introductionmentioning

confidence: 99%

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Biodegradable composite from discarded hair keratin and graphene oxide with improved mechanical, thermal and barrier properties: an eco‐friendly solution to waste materials

Noyon,

Uddin,

Dey

et al. 2023

Polymer International

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In recent years, there has been a growing concern to counter environmental pollution, and as a result, the development of biodegradable materials in various applications has become a major focus. This study aimed to fabricate a biodegradable composite by utilizing discarded hair keratin from beam house in leather processing along with incorporating graphene oxide (GO) to reduce pollution. The composite was prepared using a simple solution mixing method, where the amino functional group of keratin and carboxyl group of GO were covalently bonded under a redox system. Various analyses, including UV‐Vis spectroscopy, Fourier transform infrared spectroscopy (FT‐IR), Raman spectroscopy, Scanning electron microscopy (SEM), biodegradability, and oxygen gas transmittance rate (OTR), were carried out to evaluate the composite's structure and performance. The results demonstrated that GO was successfully integrated into the keratin matrix, with uniform dispersion of GO observed instead of agglomeration. The composite with the optimum ratio exhibited a 173.98% increase in tensile strength and a 33.52% decrease in elongation, as well as improved thermal and biodegradation properties compared to pure keratin. Furthermore, the composite displayed significantly better gas barrier properties (39%) than pure keratin, which can be attributed to the reduction of intermolecular gaps through the composite's strong bonding. Hence, the Keratin‐GO composite is a cost‐effective and biodegradable solution to waste materials, with potential use as a packaging material.This article is protected by copyright. All rights reserved.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Biodegradable composite from discarded hair keratin and graphene oxide with improved mechanical, thermal and barrier properties: an eco‐friendly solution to waste materials

Noyon,

Uddin,

Dey

et al. 2023

Polymer International

View full text Add to dashboard Cite

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Synthesis of perylene‐PEO hyperdispersants for aqueous graphene dispersion

Yong,

Kang,

Zhu

2024

J of Applied Polymer Sci

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Graphene, with excellent thermal conductivity, electrical and corrosion shielding performance has great application potential in the fields of heat dissipation coating, conductive agent and anticorrosion composite coatings. However, due to its large specific surface area, resulting strong aggregation behavior limits its application. Herein, the hyperdispersants with perylene anchoring groups are synthesized through the amidation coupling reaction between diacid anhydride and polyetheramine. The branching degree and length of hydrophilic chains on hyperdispersant are revealed to be the very important factors to affect the dispersion stability of aqueous graphene dispersion. The hyperdispersant with a single hydrophilic chain and the molecular weight 2000 of polyetheramine has the excellent dispersal activity discovered by Rheology, particle size distribution and Raman measurements. The possible mechanism is the strongest anchoring effect of perylene on graphene surface and thus achieving in best effective spatial exclusion stabilization effect of hydrophilic chains.

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Top-down strategies for achieving high-quality graphene: Recent advancements

Agrawal

2025

Journal of Industrial and Engineering Chemistry

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Influence of modified perylene-3, 4, 9, 10-tetracarboxylate with alkali metals ions as surfactant on the yield of hydrothermal liquid-phase exfoliated graphene sheets

Cited by 3 publications

References 78 publications

Biodegradable composite from discarded hair keratin and graphene oxide with improved mechanical, thermal and barrier properties: an eco‐friendly solution to waste materials

Biodegradable composite from discarded hair keratin and graphene oxide with improved mechanical, thermal and barrier properties: an eco‐friendly solution to waste materials

Synthesis of perylene‐PEO hyperdispersants for aqueous graphene dispersion

Top-down strategies for achieving high-quality graphene: Recent advancements

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