Effect of graphene oxide on the mechanical and thermal properties of graphene oxide/hytrel nanocomposites

Pandey, Naveen; Tewari, Chetna; Dhali, Sunil; Bohra, Bhashkar Singh; Rana, Sravendra; Mehta, S.P.S.; Singhal, Shailey; Chaurasia, Alok; Sahoo, Nanda Gopal

doi:10.1177/0892705719838010

Cited by 30 publications

(28 citation statements)

References 36 publications

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“…Improvements in the thermomechanical and physicochemical properties of hytrel-based nanocomposites filled with small amounts of nanostructured fillers such as carbon nanotubes, graphene, and layered silicates were also observed in Pandei et al [ 15 ].…”

Section: Introductionmentioning

confidence: 81%

Experimental and Simulation Studies of Temperature Effect on Thermophysical Properties of Graphene-Based Polylactic Acid

et al. 2022

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Overheating effect is a crucial issue in different fields. Thermally conductive polymer-based heat sinks, with lightweight and moldability features as well as high-performance and reliability, are promising candidates in solving such inconvenience. The present work deals with the experimental evaluation of the temperature effect on the thermophysical properties of nanocomposites made with polylactic acid (PLA) reinforced with two different weight percentages (3 and 6 wt%) of graphene nanoplatelets (GNPs). Thermal conductivity and diffusivity, as well as specific heat capacity, are measured in the temperature range between 298.15 and 373.15 K. At the lowest temperature (298.15 K), an improvement of 171% is observed for the thermal conductivity compared to the unfilled matrix due to the addition of 6 wt% of GNPs, whereas at the highest temperature (372.15 K) such enhancement is about of 155%. Some of the most important mechanical properties, mainly hardness and Young’s modulus, maximum flexural stress, and tangent modulus of elasticity, are also evaluated as a function of the GNPs content. Moreover, thermal simulations based on the finite element method (FEM) have been carried out to predict the thermal performance of the investigated nanocomposites in view of their practical use in thermal applications. Results seem quite suitable in this regard.

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Section: Introductionmentioning

confidence: 81%

Experimental and Simulation Studies of Temperature Effect on Thermophysical Properties of Graphene-Based Polylactic Acid

et al. 2022

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“…A second minor weight loss observed for all materials ranged from 120 to 180 • C due to desorption of vapors from the hardening agent [62]. In aprevious study, it was reported that GO begins to decompose/deteriorate at a variety of elevated temperatures of 120 • C [63], 150 • C [51] and 200 • C [20], which leads to the loss of its surface-bound oxygen functional groups. The TGA for GO composites did not have a significant weight loss compared to the pure epoxy, possibly due to the small GO loadings.…”

Section: Thermal Gravimetric Analysismentioning

confidence: 96%

“…As a result of GO's compatibility with polymers, GO has been added to various polymer matrix materials. Example polymers include polycarbonate [17], a biodegradable polyester, poly(ε-caprolactone) [18], unsaturated polyester resin [19], a polyester elastomer [20], poly (vinyl alcohol) [21], polybenzimidazole [22] and polypropylene [23].…”

Section: Introductionmentioning

confidence: 99%

Effect of Graphene Oxide as a Reinforcement in a Bio-Epoxy Composite

et al. 2021

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Graphene oxide (GO) has gained interest within the materials research community. The presence of functional groups on GO offers exceptional bonding capabilities and improved performance in lightweight polymer composites. A literature review on the tensile and flexural mechanical properties of synthetic epoxy/GO composites was conducted that showed differences from one study to another, which may be attributed to the oxidation level of the prepared GO. Herein, GO was synthesized from oxidation of graphite flakes using the modified Hummers method, while bio-epoxy/GO composites (0.1, 0.2, 0.3 and 0.6 wt.% GO) were prepared using a solution mixing route. The GO was characterized using Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM) and transmission electron microscope (TEM) analysis. The thermal properties of composites were assessed using thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). FTIR results confirmed oxidation of graphite was successful. SEM showed differences in fractured surfaces, which implies that GO modified the bio-epoxy polymer to some extent. Addition of 0.3 wt.% GO filler was determined to be an optimum amount as it enhanced the tensile strength, tensile modulus, flexural strength and flexural modulus by 23, 35, 17 and 31%, respectively, compared to pure bio-epoxy. Improvements in strength were achieved with considerably lower loadings than traditional fillers. Compared to the bio-epoxy, the 0.6 wt.% GO composite had the highest thermal stability and a slightly higher (positive) glass transition temperature (Tg) was increased by 3.5 °C, relative to the pristine bio-epoxy (0 wt.% GO).

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“…Some common examples of synthetic polymers are polyethylene, polypropylene, polyethylene terephthalate etc. [44,46]. Fig.…”

Section: Synthetic Polymersmentioning

confidence: 98%

Introduction, Past and Present Scenarios of Plastic Degradation

Pandey

Sahoo

2021

Degradation of Plastics

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The fascinating properties of plastic make its use widely possible in every field for the ease of human life. On the other hand, these properties make plastic non-biodegradable in nature. Hence the increasing accumulation of plastic in the environment is the arising concern for environmentalists and human society. This growing concern has motivated researchers and technologist to promote research activity for finding new degradation methods for plastics, synthesis of new plastic with biodegradable nature or find alternatives to plastics. Considering these facts, this book chapter briefly discusses the management of post-consumer plastic products and all the possible methods for plastic degradation such as photo and thermo-oxidative, catalytic, mechano-chemical and chemical along with the factors affecting these degradation methods.

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Effect of graphene oxide on the mechanical and thermal properties of graphene oxide/hytrel nanocomposites

Cited by 30 publications

References 36 publications

Experimental and Simulation Studies of Temperature Effect on Thermophysical Properties of Graphene-Based Polylactic Acid

Experimental and Simulation Studies of Temperature Effect on Thermophysical Properties of Graphene-Based Polylactic Acid

Effect of Graphene Oxide as a Reinforcement in a Bio-Epoxy Composite

Introduction, Past and Present Scenarios of Plastic Degradation

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