Feasibility studies on bio composites using PLA and Epoxy for structural applications.

Kumar, Navin; Banapurmath, N.R.; Ganachari, Sharanabasava V.; Sajjan, Ashok M.; Patil, Arun Y.

doi:10.1088/1757-899x/1070/1/012048

Cited by 9 publications

(5 citation statements)

References 14 publications

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“…Sonication was carried with 40 kHz and the solution temperature were maintained under control by using a cold‐water bath. After sonication, K‐6 hardener, and PLA solution, which was obtained by dissolving PLA granules in tetrahydrofuran solution [ 20 ] with a continuous stirring for about 24 h, were added to the filler‐epoxy mixture and manually stirred for 5 minutes. Finally, the solution is cast in a mold size of 230 ×°160 ×°3 mm and cured at room temperature for 24 h. The cured sample was demoulded and the samples were cut as per ASTM‐specified sizes.…”

Section: Methodsmentioning

confidence: 99%

Mechanical and fracture properties of carbon nano fibers/short carbon fiber epoxy composites

et al. 2023

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This work investigated the influence of carbon nanofibers (CNFs) and aggregate of CNFs with micro‐sized short carbon fibers (SCFs) on the mechanical, thermal, and fracture properties of epoxy (80%) ‐ Polylactic acid (PLA) (20%) composite. Epoxy‐PLA composite loaded with CNFs (0.2, 0.3, and 0.4 wt.%) and a combination of CNFs and SCFs (0.2 and 0.4 wt.% with equal content of each filler) were manufactured by sonication and manual casting. The synergistic effects of CNFs and SCFs in the epoxy matrix were investigated through mechanical and fracture characterization of nanocomposites. In comparison to CNF‐reinforced nanocomposites, the composites reinforced with integrated multiscale fillers have higher tensile, flexural, impact strength, and fracture toughness. Tensile, flexural and impact strength increased by 17.18–25.72%, 39.24–44.07%, and 39.87–97.05% respectively with the incorporation of both CNFs and SCFs into epoxy‐PLA matrices. An improvement in fracture toughness in the range of 37.93–38.77% was observed in hybrid nanocomposites in comparison to pristine epoxy‐PLA composite. The synergetic mechanism of nano and micro fillers was studied by using the fracture surfaces from tensile tests using scanning electron microscopy. The numerical analysis was also carried out to simulate the effects of filler concentration on the tensile and bending strength of nanocomposites through representative volume element using an ANSYS workbench.

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Section: Methodsmentioning

confidence: 99%

Mechanical and fracture properties of carbon nano fibers/short carbon fiber epoxy composites

et al. 2023

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“…Related to the 45 samples, the mechanical parameters were lower (approximately 133 MPa and 9.7 GPa). R-PLA(5) 15.64 ± 0.45 14.98 ± 0.15 8.77 ± 0.31 218.0 ± 18.2 224.6 ± 9.9 105.0 ± 7.6 R-PLA(10) 17.25 ± 0.51 13.63 ± 0.59 8.64 ± 0.40 291.3 ± 16.9 182.2 ± 9.4 93.9 ± 6.2 R-PLA(20) 15.25 ± 1.63 12.82 ± 0.92 7.58 ± 0.50 208.3 ± 13.3 163.9 ± 25.1 85.7 ± 4.4 R-PLA(30) 13.35 ± 0.30 13.82 ± 0.64 8.93 ± 0.11 186.6 ± 9.5 138.0 ± 23.4 102.4 ± 4.2 R-PLA(40) 12.96 ± 0.65 12.20 ± 0.54 7.76 ± 0.23 176.0 ± 7.7 150.1 ± 32.0 87.1 ± 1.1…”

Section: One-directional Tensile Test Before Agingmentioning

confidence: 99%

“…They are gaining importance due to their unique properties, including, above all, high availability, low weight, biocompatibility, biodegradability, and strong barrier capacity [ 13 , 14 ]. These features make them an ideal substitute for petroleum-based products [ 15 ]. One of the promising biopolymers is polylactide (PLA), which is a biodegradable and bio-renewable thermoplastic polyester with high mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

Influence of a Biofiller, Polylactide, on the General Characteristics of Epoxy-Based Materials

Plota-Pietrzak,

Czechowski,

Masek

2024

Materials

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The aim of this work was to obtain epoxy-based composite structures with good mechanical performance, high aging resistance, and an improved degradability profile. For this purpose, powdered polylactide in the amount of 5, 10, 20, 30, and 40 phr was introduced into the epoxy resin, and the composites were fabricated by a simple method, which is similar to that used on an industrial scale in the fabrication of these products. The first analysis concerned the study of the effect of PLA addition to epoxy resin-based composites on their mechanical properties. One-directional tensile tests of samples were performed for three directions (0, 90, and 45 degrees referring to the plate edges). Another aspect of this research was the assessment of the resistance of these composites to long-term exposure to solar radiation and elevated temperature. Based on the obtained results, it was observed that the samples containing 20 or 40 phr of polylactide were characterized by the lowest resistance to the solar aging process. It was therefore concluded that the optimal amount of polylactide in the epoxy resin composite should not be greater than 10 phr to maintain its mechanical behavior and high aging resistance. In the available literature, there are many examples in which scientists have proposed the use of various biofillers (e.g., lignin, starch, rice husk, coconut shell powder) in epoxy composites; however, the impact of polylactide on the general characteristics of the epoxy resin has not been described so far. Therefore, this work perfectly fills the gaps in the literature and may contribute to a more widespread use of additives of natural origin, which may constitute an excellent alternative to commonly used non-renewable compounds.

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“…Composites reinforced with natural fibers have been reported as a potential material for prosthetics, in addition to those with an underlying biopolymer matrix [162]. For instance, Hamad et al studied the mechanical properties of laminated composites for prosthetic sockets, which were prepared using the vacuum bagging technique and reinforced with natural fibers, such as jute, combined with glass, carbon and perlon, and bonded within a polyester resin matrix [163].…”

Section: Orthopedics and Prosthesesmentioning

confidence: 99%

Plant Fibers as Composite Reinforcements for Biomedical Applications

et al. 2023

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Plant fibers possess high strength, high fracture toughness and elasticity, and have proven useful because of their diversity, versatility, renewability, and sustainability. For biomedical applications, these natural fibers have been used as reinforcement for biocomposites to infer these hybrid biomaterials mechanical characteristics, such as stiffness, strength, and durability. The reinforced hybrid composites have been tested in structural and semi-structural biodevices for potential applications in orthopedics, prosthesis, tissue engineering, and wound dressings. This review introduces plant fibers, their properties and factors impacting them, in addition to their applications. Then, it discusses different methodologies used to prepare hybrid composites based on these widespread, renewable fibers and the unique properties that the obtained biomaterials possess. It also examines several examples of hybrid composites and their biomedical applications. Finally, the findings are summed up and some thoughts for future developments are provided. Overall, the focus of the present review lies in analyzing the design, requirements, and performance, and future developments of hybrid composites based on plant fibers.

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Feasibility studies on bio composites using PLA and Epoxy for structural applications.

Cited by 9 publications

References 14 publications

Mechanical and fracture properties of carbon nano fibers/short carbon fiber epoxy composites

Mechanical and fracture properties of carbon nano fibers/short carbon fiber epoxy composites

Influence of a Biofiller, Polylactide, on the General Characteristics of Epoxy-Based Materials

Plant Fibers as Composite Reinforcements for Biomedical Applications

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