Enhanced performance of lightweight kenaf-based hierarchical composite laminates with embedded carbon nanotubes

Hidayah, Ismail Nurul; Syuhada, D. Nuur; Khalil, H. P. S. Abdul; Ishak, Z. A. Mohd; Mariatti, M.

doi:10.1016/j.matdes.2019.107710

Cited by 31 publications

(9 citation statements)

References 39 publications

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“…The other benefits have biodegradability, renewability, low energy consumption, lightweight, etc. [3][4][5][6] However, these composites suffer from certain challenges as such incompatibility with matrix, high sensitivity to moisture, low strength, etc. 7,8 The water absorption of composites affects the mechanical and viscoelastic properties that showed degradation effects of water molecules on composites.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the effect of water absorption on thermomechanical and viscoelastic properties of flax‐hemp‐reinforced hybrid composite

Saha

Kumar

Zindani³

2021

Polymer Composites

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The recent development of natural fiber-reinforced polymer composites have shown innumerable economic and environmental benefits for a vast array of engineering applications. It is quintessential to investigate the effect of water absorption on the composites that remain in the water for a maximum of their intended service period. This study is an effort in this direction that investigates the effect of water absorption on thermo-mechanical properties of flaxhemp-reinforced epoxy composites fabricated using compression hand layup technique with different weight fraction of fiber. The fabricated composites have been characterized physically (density and water absorption), thermomechanically (tensile, flexural, thermal conductivity, and dynamical mechanical analysis), and morphologically (scanning electron microscopy [SEM]). The analysis revealed that hemp-reinforced composites (S1) had the highest water absorption capabilities in comparison to the flax-reinforced composites (S5).Higher water absorption capability had an adverse effect on the mechanical properties of fabricated composites. However, hybrid composites (S2, S3, and S4) reported better performance with regard to S1. The increased water content, however, increased the thermal conductivity of composites and maximum has been revealed for S1 (0.82 W/mK) and minimum for S5 (0.48 W/mK). The water molecules showed detrimental effects on the viscoelastic properties and revealed S3 have better interlocking bond with the lowest reduction in storage modulus (12%) and glass transition temperature (4 C) in comparison to S1 (30%) under wet conditions. A comparative analysis of the thermo-mechanical properties was also made for developed composites under dry, saturated, and re-dried conditions. The SEM has been used to characterize the morphological and fracture behavior of the fabricated composites under the influence of water uptake. The effects of water molecules on the hygrothermal aging index and diffusion co-efficient have also been discussed. Overall, the hybridization of

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Section: Introductionmentioning

confidence: 99%

Investigation of the effect of water absorption on thermomechanical and viscoelastic properties of flax‐hemp‐reinforced hybrid composite

Saha

Kumar

Zindani³

2021

Polymer Composites

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“…The development of bio‐based green composites from natural resources has become one of the most emerging and interesting research areas for engineers, scientists, and researchers in the field of polymer science 1,2 . Natural fibers that are derived from plants, animals, minerals, or agro‐waste have several advantages such as low cost, lighter weight, easy availability, low carbon emission, lower energy consumption, biodegradability, renewability, and environmentally friendly over synthetic fibers 3–5 . In correlation with this, the bio‐epoxy resin is a new group of thermosetting polymers that are also produced from natural resources and used as a matrix material to develop eco‐friendly bio‐based green composites 6–8 .…”

Section: Introductionmentioning

confidence: 99%

Accelerated weathering effects on mechanical, thermal and viscoelastic properties of kenaf/pineapple biocomposite laminates for load bearing structural applications

Kumar

Saha

Bhowmik

2021

J of Applied Polymer Sci

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Natural fibers are exceptional renewable resources to develop biocomposite materials for reducing the negative effects on the environment and producing economical and lightweight materials for load bearing semi‐structural applications. The present study is an attempt to develop kenaf/pineapple reinforced bio‐epoxy biocomposite and investigates thermo‐mechanical and viscoelastic properties under accelerated weathering conditions. The compression molding technique is used to develop biocomposite with four different arrangements of kenaf/pineapple laminates. To perform accelerated weathering, laminates are exposed to ultraviolet radiation and humidity conditions with extreme temperature in weathering tester machine. The tensile, flexural, impact, thermogravimetric analysis, thermal conductivity, viscoelastic properties, and water absorption tests are performed before and after accelerated weathering. The results revealed that the hybridization of kenaf/pineapple laminates showed better interfacial strength and stiffness while reducing the moisture sensitivity under accelerated weathering conditions. The morphology and fracture behavior of biocomposites are examined with scanning electron microscopy.

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“…etc,)-reinforced polymer composites have been predominantly used in aerospace, automobile, defense, construction and in marine fields because of its higher mechanical, thermal, and viscoelastic behavior [2,3,4]. Nonetheless, it is imperative to find a viable and sustainable alternative to synthetic fibers due to eco-legislation and keenness towards eco-friendly materials [5,6,7].…”

Section: Introductionmentioning

confidence: 99%

Enhanced Thermal and Dynamic Mechanical Properties of Synthetic/Natural Hybrid Composites with Graphene Nanoplateletes

et al. 2019

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The aim of the present research work is to enhance the thermal and dynamic mechanical properties of Kevlar/Cocos nucifera sheath (CS)/epoxy composites with graphene nano platelets (GNP). Laminates were fabricated through the hand lay-up method followed by hot pressing. GNP at different wt.% (0.25, 0.5, and 0.75) were incorporated with epoxy resin through ultra-sonication. Kevlar/CS composites with different weight ratios (100/0, 75/25, 50/50, 25/75, 0/100) were fabricated while maintaining a fiber/matrix weight ratio at 45/55. Thermal degradation and viscoelastic properties were evaluated using thermogravimetric analysys (TGA), differential scanning calorimetric (DSC) analysis, and a dynamic mechanical analyser (DMA). The obtained results revealed that Kevlar/CS (25/75) hybrid composites at 0.75 wt.% of GNP exhibited similar thermal stability compared to Kevlar/epoxy (100/0) composites at 0 wt.% of GNP. It has been corroborated with DSC observation that GNP act as a thermal barrier. However, DMA results showed that the Kevlar/CS (50/50) hybrid composites at 0.75 wt.% of GNP exhibited almost equal viscoelastic properties compared to Kevlar/epoxy (100/0) composites at 0 wt.% GNP due to effective crosslinking, which improves the stress transfer rate. Hence, this research proved that Kevlar can be efficiently (50%) replaced with CS at an optimal GNP loading for structural applications.

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Enhanced performance of lightweight kenaf-based hierarchical composite laminates with embedded carbon nanotubes

Cited by 31 publications

References 39 publications

Investigation of the effect of water absorption on thermomechanical and viscoelastic properties of flax‐hemp‐reinforced hybrid composite

Investigation of the effect of water absorption on thermomechanical and viscoelastic properties of flax‐hemp‐reinforced hybrid composite

Accelerated weathering effects on mechanical, thermal and viscoelastic properties of kenaf/pineapple biocomposite laminates for load bearing structural applications

Enhanced Thermal and Dynamic Mechanical Properties of Synthetic/Natural Hybrid Composites with Graphene Nanoplateletes

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