PVP-b-PEO block copolymers for stable aqueous and ethanolic graphene dispersions

Perumal, Suguna; Park, Kyung Tae; Lee, Hyang Moo; Cheong, In Woo

doi:10.1016/j.jcis.2015.11.014

Cited by 41 publications

(21 citation statements)

References 25 publications

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“…This can be overcome if the interaction between graphene surfaces and the stabilizing molecules is known. Recently, we studied the interactions between graphene surfaces and molecules using atomic force microscopy (AFM) [ 113 , 114 , 115 ]. The AFM cantilevers were modified with various monomers using the hydrosilylation method [ 116 ].…”

Section: Stable Graphene Dispersions Using Polymersmentioning

confidence: 99%

“…Then the prepared polymers (PVP-b-PEG and PTFEMA-b-PVP) were used to disperse graphene in alcoholic and aqueous mediums. As well as dispersing graphene, using these polymers, graphite was partially exfoliated into few-layered graphene [ 113 , 117 , 118 , 119 ]. Figure 7 reveals the stable graphene dispersion in alcoholic and aqueous mediums using PVP-b-PEO and PTFEMA-b-PVP.…”

Section: Stable Graphene Dispersions Using Polymersmentioning

confidence: 99%

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Recent Studies on Dispersion of Graphene–Polymer Composites

2021

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Graphene is an excellent 2D material that has extraordinary properties such as high surface area, electron mobility, conductivity, and high light transmission. Polymer composites are used in many applications in place of polymers. In recent years, the development of stable graphene dispersions with high graphene concentrations has attracted great attention due to their applications in energy, bio-fields, and so forth. Thus, this review essentially discusses the preparation of stable graphene–polymer composites/dispersions. Discussion on existing methods of preparing graphene is included with their merits and demerits. Among existing methods, mechanical exfoliation is widely used for the preparation of stable graphene dispersion, the theoretical background of this method is discussed briefly. Solvents, surfactants, and polymers that are used for dispersing graphene and the factors to be considered while preparing stable graphene dispersions are discussed in detail. Further, the direct applications of stable graphene dispersions are discussed briefly. Finally, a summary and prospects for the development of stable graphene dispersions are proposed.

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Section: Stable Graphene Dispersions Using Polymersmentioning

confidence: 99%

Section: Stable Graphene Dispersions Using Polymersmentioning

confidence: 99%

Recent Studies on Dispersion of Graphene–Polymer Composites

2021

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“…Perumal et al [107] prepared poly(4-vinyl pyridine)-block-poly(ethylene oxide) (PVP-b-PEO) and synthesized it with graphene. After ultrasonic and centrifugal treatment, the graphene reached the highest concentration of 2.6 mg/mL in aqueous and ethanolic solution.…”

Section: Chemical Platingmentioning

confidence: 99%

Recent Developments Concerning the Dispersion Methods and Mechanisms of Graphene

et al. 2018

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Graphene, as a reinforcement for composite materials, has become a focus recently. However, the dispersion of graphene in composite materials is a problem that has been difficult to solve for a long time, which makes it difficult to produce and use graphene-reinforced composites on a large scale. Herein, methods to improve the dispersion of graphene and dispersion mechanisms that have been developed in recent years are reviewed, and the advantages and disadvantages of various methods are compared and analyzed. On this basis, the dispersion methods and mechanisms of graphene are prospected, which lays the foundation for graphene application and preparation.

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“…The amphiphilic uorinated block copolymer can effectively prevent aggregation of GO over a period of 7 days at a GO concentration of 50 g L À1 . Perumal et al 21 used a linear amphiphilic copolymer of poly(4-vinyl pyridine)-block-poly(ethylene oxide) (PVP-b-PEO) to get stable aqueous and ethanolic GO dispersions, and the prepared polymer dispersant was able to prevent the aggregation of GO in aqueous suspensions for a long period of 3 months. Those studies suggest that block copolymers possess promising potential for a remarkable improvement of the stability of GO aqueous suspensions.…”

Section: Introductionmentioning

confidence: 99%