Influence of melt-mixing processing sequence on electrical conductivity of polyethylene/polypropylene blends filled with graphene

Tu, Ce; Nagata, Kenji; Yan, Shouke

doi:10.1007/s00289-016-1774-4

Cited by 37 publications

(29 citation statements)

References 44 publications

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“…The results obtained in this study were similar to the previous studies i.e. by lowering the filler content, it affects the toughness of the blend [30]. Sima et al blended a 3, 6, and 9% of GNP with PLA and PBT [28].…”

Section: Main and Interaction Effectssupporting

confidence: 89%

“…Thus, only a low amount of GNP required to enhance polymer properties. Since PP is a non-polar, it is incompatible with the polymer matrix [30] due to the presence of Van der Waals forces, which lead to re-agglomeration [31] and affect the mechanical properties as well. In this study, PPg-MA helps in improving the dispersion of GNP in PLA/PP blends.…”

Section: ■ Introductionmentioning

confidence: 99%

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Statistical Study on the Interaction Factors of Polypropylene-Graft-Maleic Anhydride (PP-g-MA) with Graphene Nanoplatelet (GNP) at Various Poly(Lactic Acid)/Polypropylene (PLA/PP) Blends Ratio

et al. 2020

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This paper reports the effects of polypropylene-graft-maleic anhydride (PP-g-MA) and graphene nanoplatelet (GNP on tensile stress of various PLA/PP weight ratio. The PLA/PP blends prepared with the ratio 70/30, 80/20, and 90/10 with the addition of PP-g-MA (1 to 5 phr) and GNP (1 to 3 phr) by using an injection molding machine. The tensile stress (MPa) was analyzed based on 11 runs of full factorial design. The results showed that the tensile stress of PLA/PP blends gradually increased after the addition of PP-g-MA and GNP. There is a relationship between PP-g-MA and GNP which causes a positive impact on the mechanical properties of PLA/PP blends. The optimum tensile stress of 50.06 MPa achieved at the ratio of 90/10 blends with 5 phr of PP-g-MA and 3 phr of GNP.

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Section: Main and Interaction Effectssupporting

confidence: 89%

Section: ■ Introductionmentioning

confidence: 99%

Statistical Study on the Interaction Factors of Polypropylene-Graft-Maleic Anhydride (PP-g-MA) with Graphene Nanoplatelet (GNP) at Various Poly(Lactic Acid)/Polypropylene (PLA/PP) Blends Ratio

et al. 2020

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“…In the past few years, graphene and its derivatives have been studied to compatibilize immiscible polymer blends. 16 –19 These studies show that even low concentration of graphene nanoplatelets may reduce droplet size and make a more uniformed size distribution of dispersed phase by improvement of interphase interactions. Actually, graphene nanoplatelets act as a compatibilizer and enhance mechanical and thermal properties of blend.…”

Section: Introductionmentioning

confidence: 98%

The compatibilization effect of exfoliated graphene on rheology, morphology, and mechanical and thermal properties of immiscible polypropylene/polystyrene (PP/PS) polymer blends

Abbasi

Shojaei

Bellah

2018

Journal of Thermoplastic Composite Materials

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In this article, the compatibilizing effect of exfoliated graphene nanoplatelets (xGnPs) on polypropylene/polystyrene (PP/PS) (80/20) blends was investigated, focusing on the rheology, morphology, and mechanical and thermal properties. Rheological analyses were shown, the addition of xGnP tends to increase the storage modulus and complex viscosity, due to the confinement of polymer chains and reducing their motion. Scanning electron microscope observation revealed that incorporation of xGnP results in obvious reduction in the domain diameter of dispersed PS phase, indicating that xGnP is an effective compatibilizer. Transmission electron microscopy micrographs showed the presence of graphene nanoparticles in the phase interface as expected. The addition of xGnP to PP/PS blend increased the tensile modulus and decreased elongation at break because of its rigidity and intrinsic mechanical characteristics. Reinforcement of flexible polymer chains with very high modulus graphene pellets leads to a more brittle and a stiffer blend. It was also shown that graphene nanoplatelets can increase crystalline part of the samples and affect the behavior of blends.

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“…On the other hand, very few studies have been conducted on the impact of RGO on PE/PP compatibilization and performance enhancement. Tu and coworkers studied how RGO affects PE/PP electrical and mechanical properties, when employing different mixing times and speeds [ 15 ], as well as different orders of mixing [ 16 ]. However, the literature is lacking reports on PE/PP/RGO thermal stability and heat deformation resistance.…”

Section: Introductionmentioning

confidence: 99%

Non-Isothermal Crystallization Behavior and Thermal Properties of Polyethylene Tuned by Polypropylene and Reinforced with Reduced Graphene Oxide

et al. 2020

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This research work is the first to report thermal stability, heat deformation resistance, and crystallization behavior of a Polyethylene (PE)-based biphasic polyolefin system reinforced with Reduced Graphene Oxide (RGO), which was obtained through Graphene Oxide (GO) chemical reduction. Polypropylene (PP) represented the polymeric dispersed phase. A strategic PE/PP/RGO manufacturing procedure was employed to thermodynamically localize RGO at the PE/PP interface, as confirmed by Transmission Electron Microscopy (TEM), bringing a uniform micro phase dispersion into the macro phase. In addition, studies of PE non-isothermal crystallization kinetics indicated that the morphology tunable micro phase and the nanolayered RGO promoted a nucleation-controlled PE crystallization, which was supported by Polarized Light Optical Microscopy (PLOM). This, together with fine morphology, justified the remarkable enhancement registered for the ternary system’s thermal stability and heat deformation resistance. Different filler loads were employed, with weight fractions of 2% and 4%. It was observed that the former, being better exfoliated and more homogeneously distributed at the PE/PP interface than the latter, led to a more improved PE crystallization, alongside a greater ternary system’s thermal properties. Moreover, the thermal stability of PE/PP reinforced with 2% of RGO was even higher than that of virgin PP, while their heat deformation resistance values were found to be similar. Therefore, this unique outcome provides industries, such as the energy and automotive sectors, with the opportunity to substitute PP-rich products with those mostly comprised of a cheaper, more abundant, yet performant PE.

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Influence of melt-mixing processing sequence on electrical conductivity of polyethylene/polypropylene blends filled with graphene

Cited by 37 publications

References 44 publications

Statistical Study on the Interaction Factors of Polypropylene-Graft-Maleic Anhydride (PP-g-MA) with Graphene Nanoplatelet (GNP) at Various Poly(Lactic Acid)/Polypropylene (PLA/PP) Blends Ratio

Statistical Study on the Interaction Factors of Polypropylene-Graft-Maleic Anhydride (PP-g-MA) with Graphene Nanoplatelet (GNP) at Various Poly(Lactic Acid)/Polypropylene (PLA/PP) Blends Ratio

The compatibilization effect of exfoliated graphene on rheology, morphology, and mechanical and thermal properties of immiscible polypropylene/polystyrene (PP/PS) polymer blends

Non-Isothermal Crystallization Behavior and Thermal Properties of Polyethylene Tuned by Polypropylene and Reinforced with Reduced Graphene Oxide

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