A thermomechanical study on selective dispersion and different loading of graphene oxide in polypropylene/polycarbonate blends

Tiwari, Santosh K.; Oraon, Ramesh; Adhikari, Amrita De; Nayak, Ganesh Chandra

doi:10.1002/app.45062

Cited by 21 publications

(17 citation statements)

References 33 publications

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“…The slight dark section in the TEM micrograph of E_0.3rGO3 (Figure e) implied highly dispersed Graphene layers which were clearly visible at high magnification TEM image (inset Figure e). The deep dark portion in TEM image of composite shows hugely covered Epoxy chains with Graphene nanosheets …”

Section: Resultsmentioning

confidence: 99%

A Green Route for Quick and Kilogram Production of Reduced Graphene Oxide and Their Applications at Low Loadings in Epoxy Resins

et al. 2019

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This work reports a green and facile approach to produce bulk amount reduced Graphene Oxide using Graphene Oxide as precursor through Ball Milling in presence of Zinc (Zn) powder activated with NaOH (0.5 ml NaOH (1 M) for 2 g Zn powder). Compared to most of the reported reduction of GO by using hydrazine or any other means, the present route is quite simple, inexpensive and eco-friendly. Since the proposed reduction for GO to rGO involves a solid-state processing assisted with a friction and chemical reactions, no additional purification is required. Furthermore, the extent of reduction of GO (C/O ratio in rGO ∼ 8.8) in the present strategy is much higher than that in the different approaches using metallic Zinc and NaOH, indicating a cooperativity between friction gener-ated during milling and chemical reactions. A probable mechanism for GO to rGO reduction is proposed and reduction strategy has been optimized in terms of milling time, rpm and amount of Zn powder used. To verify the applicability of asprepared rGO, we have examined the impact of rGO on the improvement of thermo-mechanical and morphological properties of Epoxy nanocomposites. Here, few layered rGO based Epoxy nanocomposites were obtained via solution blending method and subsequent hot-pressing. It was observed that rGO apparently filled in the interspaces of polymeric chains, which were helpful for the synchronously ∼ 10-15% increment in thermo-mechanical properties of fabricated nanocomposites even with an eminently low loading of rGO.[a] Dr.

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Section: Resultsmentioning

confidence: 99%

A Green Route for Quick and Kilogram Production of Reduced Graphene Oxide and Their Applications at Low Loadings in Epoxy Resins

et al. 2019

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“…The rGO is predominantly sp 2 hybridized few atoms-thick 2D carbon layers with some oxygen containing functional groups at the edges, has been treated as front line nanoller due to its enthralling physical and chemical properties such as extraordinary electrical, mechanical, and thermal properties. 28,29 It has widely been studied in the various elds of science and technology.…”

Section: Introductionmentioning

confidence: 99%

Manipulating selective dispersion of reduced graphene oxide in polycarbonate/nylon 66 based blend nanocomposites for improved thermo-mechanical properties

et al. 2017

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This work explored the thermo-mechanical properties of a reduced graphene oxide (rGO) based polycarbonate/nylon 66 blend system. Synthesis of rGO is carried out via a facile solid-state reduction of GO, using selenium powder. Selective dispersion of rGO was achieved by varying the mixing-sequence of rGO in the polymer matrices under controlled shear pressure. Selective dispersion of rGO in the blend system has been investigated with FTIR, FESEM and a rheometer. FTIR analysis showed the preferential localization of rGO in the nylon phase when it melt blended first with nylon followed by PC. In addition, the mechanical and thermal properties of this blended system were also found to be higher than those of other blend nanocomposites. The rheological study showed that lower viscosity of nylon could be the reason for preferring dispersion of rGO in the nylon phase when blended first with nylon. This preferential localization of rGO in the nylon phase affects the crystallization of the nylon phase and interfacial adhesion which resulted in enhanced mechanical strength and chemical inertness of the blend nanocomposite.

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“…All these method mainly based on chemical exfoliation (oxidation‐reduction), chemical vapor deposition (CVD), SiC processing, electrochemical expansion and arc discharge techniques and having their own advantages and disadvantages . Till the 2018 nearly 60–65% graphene and their derivatives are produced via oxidation‐reduction route owing to the sake of simplicity, economical, and simple path toward the bulk production of graphene for the commercial utilizations . Top twenty methods (merit based on google Scholar Citation) which have widely been accepted for the production of graphene and their derivatives are listed in the Table .…”

Section: An Overview Of New Synthetic Routes For Graphene and Graphenmentioning

confidence: 99%

“…In this trend, many review articles related to the graphene for the different applications have been published time to time by active researches of renowned groups ,,. But most of the published review articles were related to the various aspects of graphene either based on research articles or research articles along with few patents on the same . For example, review articles related to synthesis of graphene, application of graphene for energy storage, composites materials, solar cell application, carbon capture and many more has been extensively explored by the many active researchers ,,.…”

Section: The Game‐changer Technological Patents On Graphene and Relatmentioning

confidence: 99%

Evolution of Graphene Oxide and Graphene: From Imagination to Industrialization

Tiwari

Mishra²,

et al. 2018

ChemNanoMat

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During the past 32years, more than 103000 research articles with term graphene in the title or in manuscript have been recorded in the Scopus database. This exceptional reputation of graphene is due to numerous reasons; the most significant one appears to be its incomparable physical properties, resulting in real-time application in many fields of science and technology. That's why it seems to be absolutely justified that "graphene possesses everything's what you want". This article is a tribute to the researchers who contributed to the background of the current face of graphene. In this short paper we are presenting the contributions of initial research articles on graphite that are responsible for the present status of graphene and led the research interests of materials scientists toward the potential applications of graphene and its derivatives. The current progress in graphene research output of renowned scientists around the globe is also evaluated based on the Scopus and Web of Science databases. However, a particular emphasis is focused on the current technological innovations (2010-2017) based on graphene, as well as mostly prototype devices fabricated using graphene as a key material along with discussing the recent challenges in graphene nanotechnology, and a recommendation of the ways to advance the commercial readiness of the products based on graphene and their derivatives. In addition, we have also briefly discussed the limitations of graphene, future prospects and present global market trends of graphene-based products.

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A thermomechanical study on selective dispersion and different loading of graphene oxide in polypropylene/polycarbonate blends

Cited by 21 publications

References 33 publications

A Green Route for Quick and Kilogram Production of Reduced Graphene Oxide and Their Applications at Low Loadings in Epoxy Resins

A Green Route for Quick and Kilogram Production of Reduced Graphene Oxide and Their Applications at Low Loadings in Epoxy Resins

Manipulating selective dispersion of reduced graphene oxide in polycarbonate/nylon 66 based blend nanocomposites for improved thermo-mechanical properties

Evolution of Graphene Oxide and Graphene: From Imagination to Industrialization

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