Mechanical, thermal, and dielectric properties of functionalized graphene oxide/polyimide nanocomposite films

Fazil, Srosh; Bangesh, Masroor; Rehman, Wajid; Liaqat, Khurram; Saeed, Shaukat; Sajid, Muhammad; Waseem, Muhammad; Shakeel, Muhammad; Bibi, Iram; Guo, Cun‐Yue

doi:10.1177/1847980418821037

Cited by 21 publications

(12 citation statements)

References 27 publications

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“…151 Owing to its outstanding mechanical, electrical and thermal properties, GO has attracted its use in the biomedical, energy and environmental field. 152 Carbon nanotubes are simply graphene sheets rolled up in cylinders of 1 nm in diameter. 153 As a result of their porous structure, large surface area, high tensile strength Figure 10.…”

Section: Preparation Methodsmentioning

confidence: 99%

Removal of methylene blue from wastewater using hydrogel nanocomposites: A review

Malatji

Makhado

Modibane

et al. 2021

Nanomaterials and Nanotechnology

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Water pollution by organic dyes continues to pose a serious health and environmental threat to the ecosystem. Although adsorption using biopolymer-based hydrogels has proven to be an ideal technique for the treatment of these dye contaminants from aqueous solutions, these hydrogels suffer from lack of mechanical stability and recovery as compared to synthetic polymers. Herein, we review the low-cost synthesis of hydrogel incorporated with inorganic components mainly focusing on strategies to improve the mechanical stability and separation of the hydrogel in removing methylene blue (MB) dye from aqueous solution. The literature shows that hydrogel nanocomposites are a class of materials that have flourished significant consideration, especially concerning water treatment. In adsorption technology, hydrogel nanocomposites act as absorbents, prominent to enhance their removal efficiency towards contaminants. This review highlights the preparation and use of hydrogel nanocomposites as efficient adsorbents. In-depth discussions on adsorption and diverse synthetic routes of hydrogels have been devoted to applications of these nanocomposites and are compared in this contribution to the removal efficiency of MB dye from wastewater.

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Section: Preparation Methodsmentioning

confidence: 99%

Removal of methylene blue from wastewater using hydrogel nanocomposites: A review

Malatji

Makhado

Modibane

et al. 2021

Nanomaterials and Nanotechnology

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“…It not only has the same structure as graphene, but also has oxygen-containing functional groups such as hydroxyl and carboxyl. [1][2][3][4] So GO is widely used as a filler in polymer-based composites to improve the dielectric properties, [5,6] mechanical properties, [7][8][9] and anticorrosive properties. [10,11] However, due to the strong van der Waals force between the GO nanosheets; moreover, graphene-based nanocomposites are usually fabricated by the method of solution casting, it is difficult to uniformly disperse GO in polymers, especially in non-polar polymers.…”

Section: Introductionmentioning

confidence: 99%

Graphene oxide grafted with polydimethylsiloxane modified polyurethane

et al. 2021

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In order to improve the dispersion of graphene oxide (GO) in polymers, we synthesized polyurethane (PU) chains with long polydimethylsiloxane (PDMS) chains as the "soft segment" and hexamethylene diisocyanate (HDI) as the "hard segment", then the PU chains were grafted onto GO. The results of compatibility in solvents and TEM images of composites indicated that the modified GO (GO-PU) would present two different shapes in non-polar and polar solvents (cocoonlike shape and stretched shape, respectively). The two shapes made it have a good dispersion in both non-polar and polar polymers, it was expected to be applied in both non-polar and polar polymer matrixes. This provided a method for covalent modification of GO.

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“…[1][2][3] Owing to the excellent heat resistance, flexibility, low dielectric permittivity, and chemical resistance of polyimide (PI), an advanced polymer material, PI films are widely used in the aerospace industry and for fabricating weapons and electrical equipment. [4][5][6][7] However, the TC of PI is typically very low, less than 0.2 W (mÁK) À1 . 8,9 Improper thermal management causes local heat accumulation, which is detrimental to the stability and service life of high-energy density electronic equipment, and therefore, limits the future use of PI in the field of electronics.…”

Section: Introductionmentioning

confidence: 99%

Dielectric, thermally conductive, and heat-resistant polyimide composite film filled with silver nanoparticle-modified hexagonal boron nitride

Ruiyi

et al. 2020

High Performance Polymers

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In this study, silver–polydopamine–hexagonal boron nitride (h-BN@Ag) particles were prepared using mussel chemistry and reducibility of catechol. The modified method was simple and eco-friendly. In addition, we prepared h-BN@Ag/polyimide (PI) composite films via in situ polymerization, the scraper method, and thermal imidization. Owing to the good dispersion of the h-BN@Ag filler particles in the PI matrix and the bridging role of the Ag nanoparticles, the thermal conductivities of the h-BN@Ag/PI composite films were higher than that of the pure PI film. The thermal conductivity of the h-BN@Ag/PI film with the filler content of 10 wt% was 0.382 W (m·K)−1, which was 108% higher than that of pure PI films (0.184 W (m·K) −1). Furthermore, the composite films presented extremely low dielectric permittivity and loss tangent. Moreover, the heat resistance index of the composite films (304.6°C) was higher than that of pure PI (294.3°C). Thus, h-BN@Ag/PI composite films could be promising electronic packaging materials.

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Mechanical, thermal, and dielectric properties of functionalized graphene oxide/polyimide nanocomposite films

Cited by 21 publications

References 27 publications

Removal of methylene blue from wastewater using hydrogel nanocomposites: A review

Removal of methylene blue from wastewater using hydrogel nanocomposites: A review

Graphene oxide grafted with polydimethylsiloxane modified polyurethane

Dielectric, thermally conductive, and heat-resistant polyimide composite film filled with silver nanoparticle-modified hexagonal boron nitride

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