The evaluation of mechanical properties graphene nanoplatelets reinforced polylactic acid nanocomposites

Ghani, N F Ab; Desa, Mohd Shaiful Zaidi Mat; Bijarimi, Mohd

doi:10.1016/j.matpr.2021.01.501

Cited by 8 publications

(13 citation statements)

References 18 publications

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“…However, when this optimum level is exceeded, the nanolayers start to agglomerate, and this weakens the reinforcement performance of GnP on the mechanical properties due to the decreasing surface area of GnP agglomerates. 4,27,28…”

Section: Resultsmentioning

confidence: 99%

“…1,2 Poly(lactic acid) (PLA) is a type of aliphatic polyester and it is one of the most prominent bio-based polymers with many desirable properties such as biodegradability, easy processability by conventional equipment, good rigidity and reasonable price. 1,3,4 Additionally, the strength and modulus values of PLA are relatively high compared to other bio-based polymers. Besides, there are some disadvantages for PLA such as low impact strength, low heat deflection temperature etc.…”

Section: Introductionmentioning

confidence: 99%

“…For this purpose, various materials include fibers and/or nanofillers are incorporated to the PLA and thus obtained improved different properties. 1,3,4…”

Section: Introductionmentioning

confidence: 99%

“…GnPs are small stacks of Gn sheets that combine the layered structure of clays with the superior mechanical and thermal properties of carbon nanotubes. 4,8–11…”

Section: Introductionmentioning

confidence: 99%

“…12 Therefore, achieving good interface interaction between GnP and polymeric matrix and achieving uniform distribution of GnP within the polymeric matrix are challenging issues to achieve significant improvements in the final properties of the composite. 4,10,13,14…”

Section: Introductionmentioning

confidence: 99%

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Carbon fiber reinforced poly(lactic acid) composites: Investigation the effects of graphene nanoplatelet and coupling agent addition

Karsli

2023

Journal of Elastomers & Plastics

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Although petroleum-based polymers require a long process to decompose in nature, they still have a wide range of uses. However, due to many important reasons such as the environmental pollution problem caused by these polymers, there is an increasing interest in biodegradable polymers. Poly(lactic acid) (PLA) is a biopolymer with comparable performance to conventional polymers. However, due to its poor tribological, mechanical and thermal properties, the usage area of PLA cannot expand and its use is limited to short-term material applications. In this study, it was aimed to contribute to the expansion of the usage area of PLA by improving its poor properties. For this purpose, efficiency of graphene nanoplatelet (GnP) and/or Joncryl® addition to carbon fiber (CF) reinforced PLA matrix composites to improve the composite performance by means of improved interface interaction fiber and matrix was investigated. Within this scope, effects the separately and/or simultaneously addition of CF, GnP and Joncryl® to PLA on properties were investigated by tensile test, adhesive wear test, DSC, TGA and SEM analyses. All results revealed that the composite composition prepared by simultaneously addition of 10, 0.5 and 2 wt.% CF, GnP and Joncryl®, respectively, to pure PLA performed the best in all tests and analyses.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…For this purpose, various materials include fibers and/or nanofillers are incorporated to the PLA and thus obtained improved different properties. 1,3,4…”

Section: Introductionmentioning

confidence: 99%

“…GnPs are small stacks of Gn sheets that combine the layered structure of clays with the superior mechanical and thermal properties of carbon nanotubes. 4,8–11…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Carbon fiber reinforced poly(lactic acid) composites: Investigation the effects of graphene nanoplatelet and coupling agent addition

Karsli

2023

Journal of Elastomers & Plastics

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Graphene Nanoplatelets/Polylactic Acid Conductive Polymer Composites: Tensile, Thermal and Electrical Properties

Cheong,

Pang,

Low

et al. 2024

Chem Eng & Technol

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Conductive polymer composites (CPC) are gaining increasing popularity due to their unique characteristics, which include light weight and the ability to conduct electricity. In this work, CPC were prepared by blending the polylactic acid (PLA) with a conductive filler, graphene nanoplatelets (GNP), at dosages ranging from 1 to 12 wt % using an internal mixer. The hot press machine was used to compress the CPC into thin sheet, and subsequently characterized for tensile, thermal, and electrical properties. The results showed that the addition of GNP at 7 wt % (percolation threshold) successfully transformed the PLA into an electrically conductive material. The tensile modulus increased with added GNP, but elongation at break and tensile strength exhibited an opposite trend. The incorporation of GNP also enhanced the composite's thermal stability.

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A Comparative Study of Impact Fracture Toughness of Epoxidized Poly(1, 4 Cis‐Isoprene) Compatibilized PLA Binary and Ternary Blends

Bijarimi,

Ahmad,

Ode

et al. 2024

Chem Eng & Technol

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Poly(lactic acid) (PLA) is a biodegradable polymer with limited application because of its intrinsic brittleness, low toughness, and low elongation at break. Melt blends were prepared by mixing a natural rubber (NR, poly(1,4‐cis‐isoprene) in the form of liquid NR (LNR), liquid‐epoxidized NR (LENR), and polypropylene (PP) in the PLA matrix. Four blend systems were designed and prepared, i.e., PLA–PP, PLA–PP–LNR, and PLA–LNR or PLA–LENR. The composition of PP in the blend was fixed at 10 % PLAPP (90/10). Results showed that PLA–PP mixed with LNR improved impact and elongation at break. The binary blend of PLA–LNR (90/10) significantly enhanced impact strength and elongation at break properties. In contrast, the binary blends of PLA–LENR (90/10) showed a lower value of elongation at break (9.5 % vs. 37.3%) and impact strength (4.56 kJ m−2 vs. 6.44 kJ m−2). The melting temperature (Tm) and the glass transition temperature (Tg) were measured by differential scanning calorimetry, which recorded slight changes in the glass temperatures and melting temperatures. Scanning electron microscopy images of the tensile fracture of the PLA–LNR (90/10) blend showed the presence of large fibrils associated with the ductile failure related to neat PLA. Finally, the fracture toughness (KIC) of PLA–LNR (90/10) showed an increase of 39 % over neat PLA (2.94 MPa.m1/2 vs. 4.08 MPa.m1/2).

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The evaluation of mechanical properties graphene nanoplatelets reinforced polylactic acid nanocomposites

Cited by 8 publications

References 18 publications

Carbon fiber reinforced poly(lactic acid) composites: Investigation the effects of graphene nanoplatelet and coupling agent addition

Carbon fiber reinforced poly(lactic acid) composites: Investigation the effects of graphene nanoplatelet and coupling agent addition

Graphene Nanoplatelets/Polylactic Acid Conductive Polymer Composites: Tensile, Thermal and Electrical Properties

A Comparative Study of Impact Fracture Toughness of Epoxidized Poly(1, 4 Cis‐Isoprene) Compatibilized PLA Binary and Ternary Blends

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