Enhancement in mechanical properties of polyamide 66-carbon fiber composites containing graphene oxide-carbon nanotube hybrid nanofillers synthesized through in situ interfacial polymerization

Cho, Beom-Gon; Lee, Jung-Eun; Hwang, Sang-Ha; Han, Jong Hun; Chae, Han Gi; Park, Young‐Bin

doi:10.1016/j.compositesa.2020.105938

Cited by 70 publications

(25 citation statements)

References 55 publications

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“…In one of the studies, Pan et al investigated the effect of graphene nanosheets (GNS) produced by Hummers’ method and hydrazine reduction on the fire and mechanical properties of glass fiber PA6 composites having aluminum hypophosphite resulting in the improvement of bending strength by 44% at the cost of a decrease in the tensile strength by 38% by the addition of 1 wt% GNS [ 23 ]. Cho et al functionalized commercial GO with acyl chloride (AGO) and utilized them together with CNT and in situ polymerization of PA66 to coat carbon fibers (CF), resulting in the improvement of interfacial shear strength and tensile strength by 160% and 136%, respectively, at 1 mg AGO and 0.5 mg CNT [ 24 ]. Karatas et al melt compounded commercial graphene nanoplatelets (GNP) together with CF and PA66, which yielded a 57% reduction in adhesive wear and 11% improvement in tensile strength with the addition of 0.5 wt% GNP [ 25 ].…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Investigation of Flow and Alignment Behavior of Waste Tire-Derived Graphene Nanoplatelets in PA66 Matrix during Melt-Mixing and Injection

Dericiler

Sadeghi

Yağcı³

et al. 2021

Polymers

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Homogeneous dispersion of graphene into thermoplastic polymer matrices during melt-mixing is still challenging due to its agglomeration and weak interfacial interactions with the selected polymer matrix. In this study, an ideal dispersion of graphene within the PA66 matrix was achieved under high shear rates by thermokinetic mixing. The flow direction of graphene was monitored by the developed numerical methodology with a combination of its rheological behaviors. Graphene nanoplatelets (GNP) produced from waste-tire by upcycling and recycling techniques having high oxygen surface functional groups were used to increase the compatibility with PA66 chains. This study revealed that GNP addition increased the crystallization temperature of nanocomposites since it acted as both a nucleating and reinforcing agent. Tensile strength and modulus of PA66 nanocomposites were improved at 30% and 42%, respectively, by the addition of 0.3 wt% GNP. Flexural strength and modulus were reached at 20% and 43%, respectively. In addition, the flow model, which simulates the injection molding process of PA66 resin with different GNP loadings considering the rheological behavior and alignment characteristics of GNP, served as a tool to describe the mechanical performance of these developed GNP based nanocomposites.

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Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Investigation of Flow and Alignment Behavior of Waste Tire-Derived Graphene Nanoplatelets in PA66 Matrix during Melt-Mixing and Injection

Dericiler

Sadeghi

Yağcı³

et al. 2021

Polymers

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“…However, with the rapid development of science and technology, the original PA66 can no longer meet the requirements of contemporary applications, especially in the fields that require high mechanical properties [ 4 , 5 , 6 , 7 , 8 ]. In order to meet the demands of new applications, high-performance PA66 composites with different kinds of carbon-based fillers, such as carbon fibers, nanodiamonds, and multi-walled carbon nanotubes have attracted considerable attention [ 9 , 10 , 11 ]. As one of the most important two-dimensional carbon materials, graphene has unique mechanical properties, and its Young’s modulus and tensile strength reach 1 TPa and 130 GPa, respectively [ 12 , 13 , 14 , 15 ].…”

Section: Introductionmentioning

confidence: 99%

High-Strength GO/PA66 Nanocomposite Fibers via In Situ Precipitation and Polymerization

Shen

et al. 2021

Polymers

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The uniform dispersion of graphene oxide (GO) and strong interfacial bonding are the key factors in achieving the high mechanical strength of GO/polymer composites. It is still challenging to prepare GO/PA66 composites with uniform GO dispersion by the in situ polymerization method. In this paper, we prepare GO/PA66 salt nanocomposite by in situ precipitating PA66 salt with GO in ethanol. The GO/PA66 nanocomposite fibers are then fabricated using the as-prepared GO/PA66 salt by in situ polymerizing and melt spinning. By tuning the GO content, the tensile strength and Young’s modulus of the GO/PA66 fibers are increased from 265 ± 18 to 710 ± 14 MPa (containing 0.3 wt% GO) and from 1.1 ± 0.08 to 3.8 ± 0.19 GPa (containing 0.5 wt% GO), respectively. The remarkable improvements are attributed to the uniform dispersion of GO in the GO/PA66 salt nanocomposite via ionic bonding and hydrogen bonding in the in situ precipitation process, and the covalent interfacial bonding between the GO and PA66 during the in situ polymerization process. This work sheds light on the easy fabrication of high-performance PA66-based nanocomposites.

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“…Kishi et al investigated and found that the adhesion between polystyrene and CF reinforced epoxy ply should be improved for better flexural properties [16]. Cho et al observed that incorporation of GO in to CF reinforced epoxy composites improves the interfacial strength between matrix and reinforcement due to hydrogen bonding and mechanical interlocking [17]. Kumar et al found that the carbon black modified CFs possess better surface energy, due to the topology of the CFs than the untreated CFs and also observed that carbon black modified CF epoxy composites have better interfacial adhesion due to the wettability between matrix and CF [18].…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation on Mechanical Properties of TiAlN Thin Films Deposited by RF Magnetron Sputtering

Natrayan

Balaji

Bharathiraja

et al. 2021

Journal of Nanomaterials

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The mechanical properties of TiAlN deposited on the steel are explained in this study. Thin films are deposited by RF magnetron sputtering on the steel substrates to improve the wear resistance and hardness of the samples. Due to their improved microstructure and nanograins, the nanofilms have improved the mechanical properties of the steel substrate surface. The thin film deposited has improved the wear resistance by 80% and has improved the hardness by 95%. The deposited thin films are tested for hardness by nanoindentation and wear test by the pin-on-disk test. SEM has tested films for their microstructure and adhesion by nanoscratch test.

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Enhancement in mechanical properties of polyamide 66-carbon fiber composites containing graphene oxide-carbon nanotube hybrid nanofillers synthesized through in situ interfacial polymerization

Cited by 70 publications

References 55 publications

Experimental and Numerical Investigation of Flow and Alignment Behavior of Waste Tire-Derived Graphene Nanoplatelets in PA66 Matrix during Melt-Mixing and Injection

Experimental and Numerical Investigation of Flow and Alignment Behavior of Waste Tire-Derived Graphene Nanoplatelets in PA66 Matrix during Melt-Mixing and Injection

High-Strength GO/PA66 Nanocomposite Fibers via In Situ Precipitation and Polymerization

Experimental Investigation on Mechanical Properties of TiAlN Thin Films Deposited by RF Magnetron Sputtering

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