Investigation into mechanical, absorption and swelling behaviour of hemp/sisal fibre reinforced bioepoxy hybrid composites: Effects of stacking sequences

Thiagamani, Senthil Muthu Kumar; Krishnasamy, Senthilkumar; Muthukumar, Chandrasekar; Tengsuthiwat, Jiratti; Rajini, N.; Siengchin, Suchart; Ismail, Sikiru Oluwarotimi

doi:10.1016/j.ijbiomac.2019.08.166

Cited by 130 publications

(69 citation statements)

References 41 publications

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“…This suggested that the null hypothesis can be rejected, and there was a statistically significant difference between pure and modified sisal composites. A similar kind of study was done on hybrid composites by Thiagamani et al…”

Section: Resultsmentioning

confidence: 81%

Lowering in water absorption capacity and mechanical degradation of sisal/epoxy composite by sodium bicarbonate treatment and PLA coating

Sahu

Gupta

2019

Polymer Composites

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In view of environmental imbalance due to numerous use of manmade fibers and plastic products, demand of natural fibers reinforced biocomposites have been increased. The products prepare by these biocomposites have been used in the various applications. However, their utilizations are not found suitable in the applications where high strength and high water resistance are required. The prime aim of the present study is to improve the water resistance capacity and mechanical performance of aged sisal biocomposites. In this context, hand lay-up process was used to prepare the epoxy-based biocomposites by reinforcing the surface modified sisal fibers consisted of eco-friendly sodium bicarbonate treatment and poly (lactic acid) coating. The highest water absorption, thickness swelling, and sorption, diffusion and permeability coefficients of the fabricated sisal composites were studied. Moreover, the effect of water absorption on tensile, flexural, impact, and hardness properties of the sisal composites was also investigated. It was noticed that treated and coated sisal composite revealed the best water resistant behavior than all other the composites. This composite exhibited 30% lower water absorption capacity than that of pure sisal composite. Further, lowest degradation in mechanical properties, that is, tensile strength (3.59%), flexural strength (33.18%), and hardness (11.96%) was observed for treated and coated sisal composite. K E Y W O R D Scoating, eco-friendly treatment, mechanical properties, thickness swelling, water absorption behavior

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Section: Resultsmentioning

confidence: 81%

Lowering in water absorption capacity and mechanical degradation of sisal/epoxy composite by sodium bicarbonate treatment and PLA coating

Sahu

Gupta

2019

Polymer Composites

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“…These newgeneration thermosetting polymers are developed from environmentally-friendly epoxy resin. Some recent research has focused on using this green epoxy resin (GER) to develop biocomposites loaded with natural fibers: Kenaf/sisal, [20] sisal/hemp, [21] and water hyacinth. [22] One of the current research subjects concerns the experimental determinations and the theoretical calculations of elastic properties of composites, related with their morphology and their phase properties.…”

Section: Introductionmentioning

confidence: 99%

Green epoxy resin/date stone flour biocomposites: Effect of filler chemical treatments on elastic properties

et al. 2021

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This work aims to study the effect of chemical treatments of date stone flour (DSF) as a filler on the elastic properties of biocomposites based on green epoxy resin (GER) used as a matrix. The main disadvantages of natural reinforcements in biocomposites are the poor compatibility between the reinforcement and the matrix as well as the relatively high moisture sorption. Different chemical treatments using soda (alkaline), benzoyl chloride, and potassium permanganate were applied to the DSF filler. Then, the filler was incorporated into the matrix at 30 wt % to obtain GER/DSF biocomposites. The elastic properties of the biocomposites, namely, longitudinal modulus, shear modulus, bulk modulus, Young's modulus of elasticity, acoustic impedance, Poisson's ratio, and ultrasonic microhardness, were determined using ultrasonic through-transmission method. In addition, the morphology was studied using microscopy analysis. The results obtained revealed a decrease of the elastic properties of the pretreated-filler biocomposite compared to the pure GER. On the other hand, the chemical treatment of the filler leads to an improvement of the elastic properties of GER/DSF biocomposites. The permanganate treatment is the most suitable for GER/DSF biocomposites. The morphology analysis through optical microscopy and scanning electron microscopy showed that chemical treatments enhance the interfacial adhesion between the DSF filler and the GER matrix.

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“…[63] Very recently, green epoxy derived from plant sources with a high content of carbon is one such bio-resin, which is gaining attention of material engineers. [68] For making completely biodegradable and renewable composites, both dispersed and continuous phases of the composites must be derived from annual plants. The biodegradable polymers are classified as agro polymers, microbial monomers, chemically synthesized from agrobased resource monomers, and conventionally synthesized monomers.…”

Section: Polymersmentioning

confidence: 99%

A comprehensive review on natural fiber/nano‐clay reinforced hybrid polymeric composites: Materials and technologies

Rajeshkumar

Seshadri

Swaminathan³

et al. 2021

Polymer Composites

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119

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The utilization of sustainable natural fibers as green filler/reinforcement material for producing polymeric composites is substantially improved due to increase in the perception of ecological safety and usage of biodegradable and renewable materials toward a green environment. These natural fibers are obtained from various sources and are reinforced in the polymer matrices to produce polymer matrix composites. However, the overall properties of these composites are low when compared to that of the synthetic fiber-based composites due to poor interfacial bonding between the hydrophilic natural fiber and hydrophobic polymers. This deficiency can be addressed by incorporating

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Investigation into mechanical, absorption and swelling behaviour of hemp/sisal fibre reinforced bioepoxy hybrid composites: Effects of stacking sequences

Cited by 130 publications

References 41 publications

Lowering in water absorption capacity and mechanical degradation of sisal/epoxy composite by sodium bicarbonate treatment and PLA coating

Lowering in water absorption capacity and mechanical degradation of sisal/epoxy composite by sodium bicarbonate treatment and PLA coating

Green epoxy resin/date stone flour biocomposites: Effect of filler chemical treatments on elastic properties

A comprehensive review on natural fiber/nano‐clay reinforced hybrid polymeric composites: Materials and technologies

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