Moisture absorption and thickness swelling behaviour of luffa fibre/epoxy composite

Bera, Tanusree; Mohanta, Niharika; Prakash, Ved; Pradhan, Subhrajit; Acharya, S. K.

doi:10.1177/0731684419856703

Cited by 38 publications

(26 citation statements)

References 30 publications

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“…However, the moisture content in the hybrid composite systems starts to increase with the increased loading of energy reeds in the proportions. The similar phenomenon were also discussed by the researchers in previous studies for different natural ber reinforced polymeric composites [37,53,54].…”

Section: Resultssupporting

confidence: 80%

Rice straw and energy reeds fiber reinforced phenol formaldehyde resin hybrid polymeric composite panels

Hasan¹,

Horváth²,

Bak³

et al. 2021

Preprint

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Herein, natural fiber (energy reeds and rice straw) reinforced with phenol formaldehyde (PF) polymeric resin hybrid biocomposites are developed and reported in this study. The dimensions of energy reeds and rice straws used for this research were 0.5 to 1.66 mm and 0.1 to 3.55 mm, respectively. The hot-pressing technology was used for manufacturing the biocomposites. The proportions for mixing of rice straw/energy reeds in composite systems were 90/0, 54/36, 36/54, and 0/90, whereas another 10% were PF resin. The nominal densities of the biocomposite panels were 680 kg/m3, however the actual densities were 713.655, 725, 742.79, and 764.49 kg/m3. The main objective of this study is to develop hybrid biocomposites from different proportions of energy reeds and rice straw fibers and to find the convenient ratio and materials for biocomposites production. The obtained results demonstrate that mechanical properties and stability against the moisture increases with the increase of energy reeds loading in the composite systems. However, the biocomposite developed from 100% energy reeds provided the higher mechanical properties compared to 100% rice straw. The mechanical, physical, thermal, and morphological properties of the produced biocomposite materials were investigated. Moreover, the overall thermomechanical performances of the developed biocomposite panels demonstrate a potential and novel materials in the coming times. Furthermore, the coefficient of variation (R2) also demonstrates a positive attributions of energy reed fibers loading inn composite systems.

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Section: Resultssupporting

confidence: 80%

Rice straw and energy reeds fiber reinforced phenol formaldehyde resin hybrid polymeric composite panels

Hasan¹,

Horváth²,

Bak³

et al. 2021

Preprint

View full text Add to dashboard Cite

show abstract

“…However, the moisture content in the hybrid composite systems start to decrease with the increased loading of energy reeds in the proportions. The similar phenomenon were also discussed by the researchers in previous studies for different natural fiber reinforced polymeric composites (Bera et al 2019;Hasan et al 2021d;Njoku et al 2019;Vinod 2021).…”

Section: Resultssupporting

confidence: 80%

Rice straw and energy reed fibers reinforced phenol formaldehyde resin polymeric biocomposites

et al. 2021

View full text Add to dashboard Cite

Herein, natural fiber (energy reeds and rice straw) reinforced with phenol formaldehyde (PF) polymeric resin biocomposites are developed and reported in this study. The dimensions of energy reeds and rice straws used for this research were 0.5–1.66 mm and 0.1–3.55 mm, respectively. The hot-pressing technology was used for manufacturing the biocomposites. The proportions for mixing of rice straw/energy reed fibers in composite systems were 90/0, 54/36, 36/54, and 0/90 whereas remaining 10% were belong to PF resin. The nominal densities of the biocomposite panels were 680 kg/m3, however the actual densities were 713.655, 725, 742.79, and 764.49 kg/m3. The main objective of this study is to develop hybrid biocomposites from different proportions of energy reeds and rice straw fibers using PF resin and to find the convenient ratio and materials for biocomposites production. The obtained results demonstrate that mechanical properties and stability against the moisture increases with the increase of energy reeds loading in the composite systems. The biocomposite developed from 100% energy reeds provided the higher mechanical properties compared to 100% rice straw. The thermal and morphological properties of the produced biocomposite materials were investigated and found significant. The thermo-mechanical properties of the composite materials increase with the increase in energy reed fiber loading in composite system. Furthermore, the coefficient of variation (R2) also demonstrates a positive attributions of energy reed fibers loading in composite systems. Moreover, the overall performances of the developed biocomposite panels demonstrate them as potential and novel candidate to the composite community in the coming times. Graphical abstract

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“…This behavior between matrix and natural filler is usually due to the inherent incompatibility of the CBS particles with hydrophobic polymer matrix and the number of functional groups (hydroxyl and other polar groups) that contribute to acid-base interaction in the contacting area [ 86 , 87 ]. Another aspect that affects mechanical properties when natural fillers are used is the water absorption of the filler, which can causes fibers to swell and generate micro-cracking of composites [ 88 ]. At higher magnification, particle fracture, filler-matrix debonding, and matrix breakage were observed as the central failure mechanism [ 89 ].…”

Section: Resultsmentioning

confidence: 99%

Development and Characterization of a 3D Printed Cocoa Bean Shell Filled Recycled Polypropylene for Sustainable Composites

et al. 2021

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Natural filler-based composites are an environmentally friendly and potentially sustainable alternative to synthetic or plastic counterparts. Recycling polymers and using agro-industrial wastes are measures that help to achieve a circular economy. Thus, this work presents the development and characterization of a 3D printing filament based on recycled polypropylene and cocoa bean shells, which has not been explored yet. The obtained composites were thermally and physically characterized. In addition, the warping effect, mechanical, and morphological analyses were performed on 3D printed specimens. Thermal analysis exhibited decreased thermal stability when cacao bean shell (CBS) particles were added due to their lignocellulosic content. A reduction in both melting enthalpy and crystallinity percentage was identified. This is caused by the increase in the amorphous structures present in the hemicellulose and lignin of the CBS. Mechanical tests showed high dependence of the mechanical properties on the 3D printing raster angle. Tensile strength increased when a raster angle of 0° was used, compared to specimens printed at 90°, due to the load direction. Tensile strength and fracture strain were improved with CBS addition in specimens printed at 90°, and better bonding between adjacent layers was achieved. Electron microscope images identified particle fracture, filler-matrix debonding, and matrix breakage as the central failure mechanisms. These failure mechanisms are attributed to the poor interfacial bonding between the CBS particles and the matrix, which reduced the tensile properties of specimens printed at 0°. On the other hand, the printing process showed that cocoa bean shell particles reduced by 67% the characteristic warping effect of recycled polypropylene during 3D printing, which is advantageous for 3D printing applications of the rPP. Thereby, potential sustainable natural filler composite filaments for 3D printing applications with low density and low cost can be developed, adding value to agro-industrial and plastic wastes.

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Moisture absorption and thickness swelling behaviour of luffa fibre/epoxy composite

Cited by 38 publications

References 30 publications

Rice straw and energy reeds fiber reinforced phenol formaldehyde resin hybrid polymeric composite panels

Rice straw and energy reeds fiber reinforced phenol formaldehyde resin hybrid polymeric composite panels

Rice straw and energy reed fibers reinforced phenol formaldehyde resin polymeric biocomposites

Development and Characterization of a 3D Printed Cocoa Bean Shell Filled Recycled Polypropylene for Sustainable Composites

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