A facile route to prepare few-layer graphene/polyamide 6 nanocomposites by liquid reactive extrusion

Fu, Xubing; Zhao, Xinyi; Yan, Dongguang; Zhao, Dajiang; Li, Jiao; Yang, Guisheng

doi:10.1039/c5ra14067f

Cited by 9 publications

(9 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It should be noted that the addition of GO did not change the degradation behavior (Table 1) and the degree of crystallinity (Table 2) of PA6 so that their effects on the mechanical properties can be discarded. In general, the magnitudes of the tensile properties obtained in this study for the PA6‐GO are comparable to those obtained in other related studies for similar filler loads 6,11,12,15,16,28 . Yang et al, 12 for instance, prepared a PA6/G nanocomposite using a single screw extruder coupled to an ultrasound probe to aid filler dispersing followed by injection molding and obtained exfoliated graphite nanoplatelets (GNP) within polymer matrix which resulted in a 1.5‐fold increase in modulus and tensile strength for 0.5 wt% filler load.…”

Section: Resultssupporting

confidence: 86%

Development of polyamide 6‐graphene oxide nanocomposite and direct‐joining with aluminum alloy for lightweight engineering applications

Luiz,

Oliveira,

Canto

2023

Polymer Engineering & Sci

View full text Add to dashboard Cite

Lightweight polyamide composites and structures have been widely studied and employed in several industrial sectors. In this study, the development of a nanocomposite of polyamide 6 and graphene oxide (PA6‐GO) by melt‐compounding and the joining with aluminum alloy AA6061 through direct‐adhesion injection overmolding are addressed. PA6‐GO nanocomposite exhibited well‐dispersed thin (300 nm) GO platelets distributed within the PA6 matrix, which resulted in an increase of 21% in the tensile modulus and 16% in the yield stress for a filler loading of 0.5 wt%. PA6‐GO/AA6061 hybrid joints showed good mechanical anchorage through the complete filling of the polymer into micro‐scale grooves designed onto the metal surface, which ensured outstanding shear strength of 7.1 ± 1.0 MPa, comparable to other polyamide‐metal hybrid joints reported in the literature. This indicates that the processing routes and materials developed are promising for lightweight engineering applications.Highlights A PA6‐GO nanocomposite with enhanced tensile properties was developed. A joint of PA6‐GO and AA6061 with outstanding shear strength was obtained. Fast and efficient melt‐processing routes were employed. These materials are promising for lightweight engineering applications.

show abstract

Section: Resultssupporting

confidence: 86%

Development of polyamide 6‐graphene oxide nanocomposite and direct‐joining with aluminum alloy for lightweight engineering applications

Luiz,

Oliveira,

Canto

2023

Polymer Engineering & Sci

View full text Add to dashboard Cite

show abstract

“…The 2D band was composed of two peaks in the XGnP spectra of XGnP (2D-1 and 2D-2), as shown in Fig. 4(a) (insets),whereas the 2D band of Ag-graphene showed a single peak due to the thinner flakes of graphene nanosheets303132. Similar findings in the Raman spectra of multilayered graphene nanosheets were also reported in literatures29303132.…”

Section: Resultssupporting

confidence: 86%

Microwave-synthesized freestanding iron-carbon nanotubes on polyester composites of woven Kevlar fibre and silver nanoparticle-decorated graphene

Hazarika

Deka

Kim

et al. 2017

Sci Rep

View full text Add to dashboard Cite

We synthesized Ag nanoparticle-decorated multilayered graphene nanosheets (Ag-graphene) from graphite nanoplatelets and silver nitrate through 90–100 s of microwave exposure, without the use of any mineral acids or harsh reducing agents. Fe nanoparticle-decorated carbon nanotubes (Fe-CNTs) were grown on polypyrrole (PPy) deposited on woven Kevlar fibre (WKF), using ferrocene as a catalyst, under microwave irradiation. Fe-CNTs grown on WKF and Ag-graphene dispersed in polyester resin (PES) were combined to fabricate Ag-graphene/Fe-CNT/PPy-coated WKF/PES composites by vacuum-assisted resin transfer moulding. The combined effect of Fe-CNTs and Ag-graphene in the resulting composites resulted in a remarkable enhancement of tensile properties (a 192.56% increase in strength and 100.64% increase in modulus) as well as impact resistance (a 116.33% increase). The electrical conductivity significantly increased for Ag-graphene/Fe-CNT/PPy-coated WKF/PES composites. The effectiveness of electromagnetic interference shielding, which relies strongly on the Ag-graphene content in the composites, was 25 times higher in Ag-graphene/Fe-CNT/PPy-coated WKF/PES than in neat WKF/PES composites. The current work offers a novel route for fabricating highly promising, cost effective WKF/PES composites through microwave-assisted synthesis of Fe-CNTs and Ag-graphene.

show abstract

“…Nanomaterials 2020, 10, x FOR PEER REVIEW 3 of 22 polymers obtainable by ring opening polymerization, such as polybutyleneterephthalate [56][57][58][59][60], polylactic acid [61,62] and polyamide 6 [63,64]. The above-summarized scenario explains the wide scatter of thermal conductivity enhancement reported in literature for polymer based GRM nanocomposites, which relates to the large differences in GRM structure and properties, as well as the type of polymer, the nanocomposite preparation method and the nanostructure obtained.…”

Section: Introductionmentioning

confidence: 97%

“…Melt blending process are clearly advantageous in terms of cost and industrial scalability, but dispersion of non-functionalized GRM by direct compounding in molten polymer remains challenging [54,55], both owing to the limited chemical affinity and the high viscosity. Polymerization during extrusion was recently demonstrated to be a promising route for efficient dispersion of GRM, despite limited to polymers obtainable by ring opening polymerization, such as polybutyleneterephthalate [56][57][58][59][60], polylactic acid [61,62] and polyamide 6 [63,64].…”

Section: Introductionmentioning

confidence: 99%

Properties of Graphene-Related Materials Controlling the Thermal Conductivity of Their Polymer Nanocomposites

et al. 2020

View full text Add to dashboard Cite

Different types of graphene-related materials (GRM) are industrially available and have been exploited for thermal conductivity enhancement in polymers. These include materials with very different features, in terms of thickness, lateral size and composition, especially concerning the oxygen to carbon ratio and the possible presence of surface functionalization. Due to the variability of GRM properties, the differences in polymer nanocomposites preparation methods and the microstructures obtained, a large scatter of thermal conductivity performance is found in literature. However, detailed correlations between GRM-based nanocomposites features, including nanoplatelets thickness and size, defectiveness, composition and dispersion, with their thermal conductivity remain mostly undefined. In the present paper, the thermal conductivity of GRM-based polymer nanocomposites, prepared by melt polymerization of cyclic polybutylene terephtalate oligomers and exploiting 13 different GRM grades, was investigated. The selected GRM, covering a wide range of specific surface area, size and defectiveness, secure a sound basis for the understanding of the effect of GRM properties on the thermal conductivity of their relevant polymer nanocomposites. Indeed, the obtained thermal conductivity appeares to depend on the interplay between the above GRM feature. In particular, the combination of low GRM defectiveness and high filler percolation density was found to maximize the thermal conductivity of nanocomposites.

show abstract

A facile route to prepare few-layer graphene/polyamide 6 nanocomposites by liquid reactive extrusion

Abstract: A liquid reactive extrusion process was developed to prepare graphene/polyamide 6 nanocomposites and its crystalline and mechanical properties.

Cited by 9 publications

References 51 publications

Development of polyamide 6‐graphene oxide nanocomposite and direct‐joining with aluminum alloy for lightweight engineering applications

Development of polyamide 6‐graphene oxide nanocomposite and direct‐joining with aluminum alloy for lightweight engineering applications

Microwave-synthesized freestanding iron-carbon nanotubes on polyester composites of woven Kevlar fibre and silver nanoparticle-decorated graphene

Properties of Graphene-Related Materials Controlling the Thermal Conductivity of Their Polymer Nanocomposites

Contact Info

Product

Resources

About