Effect of Graphene Nanoplatelets (GNPs) on Tribological and Mechanical Behaviors of Polyamide 6 (PA6)

Mindivan, Ferda

doi:10.24874/ti.2017.39.03.01

Cited by 12 publications

(16 citation statements)

References 10 publications

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“…This small variation is aligned with the literature on assessing the strength of polymer-based nano-composites. 45,51,53 The increase in strength with Amine-GNPs can be attributed to the effective stress transfer via functionalisation, which provided better interfacial strength and thus withstanding higher loads compared to O 2 -GNPs. 54 However, the increase in GNPs addition percentage is believed to reduce the strength of the polymer because of their large volume and surface area, leading to an overall reduction in strength.…”

Section: Tensile Propertiesmentioning

confidence: 99%

“…Previous work on assessing the shore hardness of polymer composites reported slight increase which was attributed to the high surface area and dispersion of the reinforcement phase. [48][49][50] Incorporating GNPs in polymeric materials have been seen to lead to an increase 35,51,52 and reduction 45,[53][54][55] in tensile properties. Yesildag et al 52 reported a 20% increase in tensile modulus when 1 wt% GNPs was added to PA6.…”

Section: Introductionmentioning

confidence: 99%

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Functionalised graphene effect on the mechanical and thermal properties of recycled PA6/PA6,6 blends

Korkees

Aldrees

Barsoum

et al. 2021

Journal of Composite Materials

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Limiting the generation of polymers waste and maximizing their recyclability and recovery have been the main focus of the research and industry in recent years. Recycling of polyamides leads to the loss in mechanical and thermal properties, therefore, in order to reuse recycled nylons, an enhancement in their properties is desired. Enhancing the properties of recycled polyamides by the addition of functionalised graphene nanoparticles (GNPs) was the goal of this study. Recycled PA6/PA6,6 blends and functionalised graphene nanocomposites were prepared using hot-melt extrusion process. Two types of functionalised graphene were used: O2-GNPs and Amine-GNPs. The nanofillers didn’t affect the crystallinity of the recycled nylon, while the presence of functionalised graphene increased the thermal conductivity by enabling better heat transfer routes within the polymer. The microstructure of the materials was characterised confirming the successful dispersion but with a slight variation in GNPs/Polymer bonding depending on the functionalisation type. The strong nylon-to-graphene interfacial hydrogen bonding increased the mechanical properties of the recycled nylon nanocomposites. The functionalised nanoparticles slowed down the segmental motion of the polymer chain and decreased the ductility with increasing GNPs contents up to 10 wt%. The overall behaviour of recycled nylon nanocomposites showed dependency on the type of functionalisation and concentration of GNPs with better improvement in the overall properties using 2 wt% Amine-GNPs. These enhanced properties make functionalised graphene/recycled nylon nanocomposites a promising new class of advanced materials.

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Section: Tensile Propertiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Functionalised graphene effect on the mechanical and thermal properties of recycled PA6/PA6,6 blends

Korkees

Aldrees

Barsoum

et al. 2021

Journal of Composite Materials

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“…On the other hand, the Ti-6Al-4V alloy showed friction coefficient values in the range of 0.6-0.9 with relatively heavy fluctuations. Mindivan (2017) who investigated tribological behavior of Polyamide 6-GNPs composites, reported that GNPs acting as a lubricant diminished the direct contact between the counter face and the matrix. Figure 6.…”

Section: Resultsmentioning

confidence: 99%

An Electrodeposition Method of Nickel–Graphene Composite Coatings on Ti–6Al–4V alloy

Mindivan

Özkan

2018

Bilge International Journal of Science and Technology Research

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The main objective of this work has been the deposition of Nickel (Ni)-Graphene nanoplatelets (GNPs) composites on a Ti-6Al-4V alloy substrate via a pulse current technique from a Watt's type bath. The characterization of the coatings was done by structural surveys, hardness measurements and wear tests. In this current work, XRD and SEM analysis demonstrated the better grained and compact property of the Ni-GNPs deposits. The surface roughness of the composite coatings was significantly decreased with the addition of GNPs. Furthermore, the addition of GNPs in the Ni matrix improved both hardness and wear behaviour of the composite coating compared to the pure Ni coating.

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“…Mindivan reported similar results between GNP and poliamide 6. [40] High modulus and the specific surface area of GNP affected the tensile properties of the composites. [12,37,41,42] As shown in Figure 11, the PVC/GNP nanocomposites showed much higher microhardness values than the neat PVC.…”

Section: Mechanical Characterizationmentioning

confidence: 99%

Mechanical, thermal, and micro‐ and nanostructural properties of polyvinyl chloride/graphene nanoplatelets nanocomposites

2020

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This article describes micro‐ and nanostructural, mechanical, and thermal properties of nanocomposites based on polyvinyl chloride (PVC) and graphene nanoplatelets (GNP). The primary objective of this study was to extend restricted application area of PVC due to its low thermal stability and limited mechanical properties. GNP‐filled PVC nanocomposites were prepared (0, 0.1, 0.3, 0.5, and 1.0 wt%) by colloidal blending method and characterized in detail. The highest value of the tensile strength 13.73 MPa (an increase of 58%) and the highest value of microhardness 83.42 MPa (an increase of 82%) were obtained with GNP loading content of 0.5 wt% compared neat PVC. The mechanical properties started to decrease at loading higher than 0.5 wt%; however, the thermal properties continued to increase. The differential scanning calorimetry and Fourier transform infrared analysis results of this nanocomposite confirmed that the increase in glass transition temperature from 34.99°C to 44.36°C and the decrease in the height of functional groups peaks proved to prevented segmental relaxation and intermolecular vibrations of PVC, respectively. Thermogravimetric analysis results were showed that the percentage of carbonaceous residue increased to 15.77% by increasing the GNP content from 0.1 to 0.5 wt%. As a result, the best GNP loading was at 0.5 wt% for PVC/GNP nanocomposites where mechanical and thermal properties of PVC/GNP were both enhanced.

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Effect of Graphene Nanoplatelets (GNPs) on Tribological and Mechanical Behaviors of Polyamide 6 (PA6)

Abstract: A B S T R A C T

Cited by 12 publications

References 10 publications

Functionalised graphene effect on the mechanical and thermal properties of recycled PA6/PA6,6 blends

Functionalised graphene effect on the mechanical and thermal properties of recycled PA6/PA6,6 blends

An Electrodeposition Method of Nickel–Graphene Composite Coatings on Ti–6Al–4V alloy

Mechanical, thermal, and micro‐ and nanostructural properties of polyvinyl chloride/graphene nanoplatelets nanocomposites

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