Mechanical and degradation properties of natural fiber‐reinforced PLA composites: Jute, sisal, and elephant grass

Rajesh, Gunti; Prasad, A.V. Ratna; Gupta, A.V.S.S.K.S.

doi:10.1002/pc.24041

Cited by 125 publications

(81 citation statements)

References 31 publications

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“…The degradation of the first three-stage insignificant compared to the last three-stage (60-90 days). Degradation of weight loss PLA scored very less among the group, which is approximately 24.7% because it takes a bit longer time to hydrolyze with soil [60,61]. Similarly, raw jute-coir and PLA biocomposites demonstrating the highest result of 66.9% in the group.…”

Section: Burial Degradation In Soilmentioning

confidence: 93%

Preparation and evaluation mechanical, chemical and thermal properties of hybrid jute and coir fibers reinforced bio-composites using poly-lactic acid and poly-caprolactone blends

Hossen

Feng

Yin

et al. 2020

Mater. Res. Express

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Green composites using thermoplastics and thermosets got immense popularity long back when it newly introduced to the industry due to diminishing reliance on oil-based or gasoline materials, which causes numerous environmental problems. In this paper, bio-composites mechanical, chemical, thermal, and degradation properties of hybrid jute and coir fibers reinforced polylactic acid (PLA) investigated. Throughout the fabrication procedure of biocomposites, jute, and coir fibers characterized into three different categories raw, alkali-peroxide, and alkali-silane combined chemical treatments followed a design containing in a total of ten optimized samples. Jute and coir fibers were mixed with a solution of polycaprolactone (PCL) for better fiber-matrix adhesion prior to fabrication. The mechanical properties of alkali-silane treated reinforced fibers biocomposites improved compared to untreated fibers, which exhibited for fiber contents 40% an increase of respectively 32.8% by tensile strength 25.95% by tensile modulus, 24.58% by flexural strength, 23.64% by flexural modulus, and 26.08% by impact strength. Besides, moisture absorption, thickness swelling, thermal stability (TG), and surface chemistry analysis (FTIR) properties investigated, according to fiber-matrix contents ratio, hot-pressing time, temperature, and pressure to identify the effect of biocomposites due to chemical treatments. Moreover, the fiber surface effect of chemical treatments and interfacial adhesion morphologies observed using SEM. Eventually, alkali-silane combined optimized samples demonstrated the most desirable result in every aspect. In addition, a 90 days burial degradation performed to see the degradation flow of the biocomposites.

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Section: Burial Degradation In Soilmentioning

confidence: 93%

Preparation and evaluation mechanical, chemical and thermal properties of hybrid jute and coir fibers reinforced bio-composites using poly-lactic acid and poly-caprolactone blends

Hossen

Feng

Yin

et al. 2020

Mater. Res. Express

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“…The work has been carried out on mechanical properties of untreated (as received) jute fabric reinforced polyester composite . Mechanical properties of natural fiber reinforced polymer composite for different fiber loading has been determined . The mechanical properties of natural fiber reinforced composite show good agreement with visco‐elastic characteristics .…”

Section: Introductionmentioning

confidence: 90%

Investigation on mechanical and thermo‐mechanical properties of granite powder filled treated jute fiber reinforced epoxy composite

2015

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In the present study, two sets of jute epoxy composites are fabricated by varying first fiber loading from 10 to 50 wt% at an interval of 10 wt% and then granite powder incorporated from 0 to 24 wt% in an interval of 8 wt% in the composites. The initial study is to prepare polymeric composites for wind turbine blade application and study the following physical to thermo‐mechanical properties including fracture toughness of the composites. The void content of the unfilled composites show in decreasing order (from 6.37 to 3.07%) with the increasing in fiber loading which satisfied well with the increasing in tensile strength from 28.33 to 34.2 MPa and flexural strength from 44.2 to 97.8 MPa, respectively. As far as particulate filled composites the void content shows reverse in trend (from 2.99% to 9.68%) with the increasing in filler content and which justifies the mechanical properties i.e tensile strength decreases from 33.72 to 32.27 MPa and similarly in case of flexural strength also. Whereas, hardness shows a unique behavior both in fiber reinforced and particulate filled composites in an increasing order from 29 to 44 Hv, respectively. Fracture toughness is observed to be constant for all considered crack lengths however, its value significantly improved with both type of reinforcement. The dynamic mechanical analysis shows positive effect of both the reinforcement for mechanical performance under cyclic stresses. Finally, Cole–Cole plot is drawn from the dynamic mechanical analysis results to verify the homogeneity of the composites. POLYM. COMPOS., 38:736–748, 2017. © 2015 Society of Plastics Engineers

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“…These studies agreed that the mechanical property degrades over time from an increase in mass, internal stresses from swelling, and loss of interlaminar strength (Choqueuse et al 1997;Faguaga et al 2012;Tual et al 2015;Gunti et al 2016). Current research on the high strain rate response of weathered composites is limited.…”

Section: Introductionmentioning

confidence: 78%

“…The diffusion process is relatively well established and can be described by a diffusion coefficient that is a function of parameters such as temperature, type of resin and curing agent, surrounding medium composition, fillers, and void content. The value for diffusion coefficient and the theoretical models used to describe the diffusion varies in previous studies of diffusion in composites (Shirrell and Halpin 1977;Browning et al 1977;Deiasi et al 1980;Blikstad et al 1984;Neumann and Marom 1987;Amer et al 1996;Choqueuse and Davies 2008;Sar et al 2012;Joliff et al 2012;Fichera et al 2015;Popineau et al 2005;Choqueuse et al 1997;Faguaga et al 2012;Tual et al 2015;Gunti et al 2016). A standard and well-accepted model for epoxy resins, in terms of mass diffusions, is a Fickian model (Popineau et al 2005) which uses Fick's second law to predict how the concentration of a diffusive substance changes over time within a material (Davies and Rajapakse 2014;Crank 1975).…”

Section: Introductionmentioning

confidence: 99%

Underwater nearfield blast performance of hydrothermally degraded carbon–epoxy composite structures

Matos

Javier

LeBlanc

et al. 2018

Multiscale and Multidiscip. Model. Exp. and Des.

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An experimental and computational study was conducted to evaluate the dynamic response of weathered biaxial composite plates subjected to near-field explosive/blast loadings. Naval structures are subjected to aggressive marine environments during their service life that can significantly degrade their performance over time. The composite materials in this study are carbonepoxy composite plates with [0, 90]s and [45, − 45]s layups. The composites were aged rapidly through submersion in 65 • C seawater for 35 and 70 days, which through Arrhenius' methodology, simulates approximately 10 and 20 years of operating conditions, respectively. Experiments were performed by clamping the composite plates to an air-backed enclosure inside an underwater blast facility. During the experiments, an RP-503 explosive was submerged, behind the composite specimen, and detonated. Meanwhile, transducers measured the pressure emitted by the explosive, and three high-speed cameras captured the event. Two of the cameras were placed facing the specimen to measure full field displacement, velocities, and strains through a 3D digital image correlation analysis. The third high-speed camera was used to record the explosive's behavior and bubble-to-specimen interaction. Additional experiments were performed to obtain the non-weathered and weathered material properties as well as the residual strength post the blast experiments. Additionally, a coupled Eulerian-Lagrangian finite element simulation was conducted to complement the experimental findings. Results show that the diffusion of water into the composite material leads to a more prominent blast response as well as the degradation of mechanical properties, especially shear properties which are dominated by the epoxy matrix. Residual strength experiments also show a substantial decrease in the structural integrity post-blast loading for the weathered composites. Lastly, the numerical simulations showed substantial increase in maximum strains with relatively small decreases in mechanical stiffness. Hence, even past the saturation point, incremental changes in material properties can have a significant impact on mechanical performance.

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Mechanical and degradation properties of natural fiber‐reinforced PLA composites: Jute, sisal, and elephant grass

Cited by 125 publications

References 31 publications

Preparation and evaluation mechanical, chemical and thermal properties of hybrid jute and coir fibers reinforced bio-composites using poly-lactic acid and poly-caprolactone blends

Preparation and evaluation mechanical, chemical and thermal properties of hybrid jute and coir fibers reinforced bio-composites using poly-lactic acid and poly-caprolactone blends

Investigation on mechanical and thermo‐mechanical properties of granite powder filled treated jute fiber reinforced epoxy composite

Underwater nearfield blast performance of hydrothermally degraded carbon–epoxy composite structures

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