Mechanical properties of uniaxial natural fabric Grewia tilifolia reinforced epoxy based composites: Effects of chemical treatment

Jayaramudu, J.; Reddy, Goddeti Siva Mohan; Varaprasad, Kokkarachedu; Sadiku, Rotimi; Ray, Suprakas Sinha; Rajulu, A. Varada

doi:10.1007/s12221-014-1462-7

Cited by 25 publications

(10 citation statements)

References 35 publications

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“…These are confirmed by the previous studies, which reported that the PLA materials are brittle because they consist of amorphous phases when the temperature rises between 140 °C to 180 °C [32,33]. For epoxy composites, the tensile strength decreased as the kenaf fibres loading increased, predominantly because of the poor matrix adhesion and unbonding between the matrix and fibres [34]. At higher fibre loadings, the fibres tends to overshadow the epoxy resin, which further defects the composites [1,10].…”

Section: Resultssupporting

confidence: 83%

Kenaf Composites for Automotive Components: Enhancement in Machinability and Moldability

et al. 2019

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To date, the mechanical performance of kenaf composites is still unsatisfied in term of its mechanical performance. Therefore, research focuses on kenaf composites fabrication through the selection of polymer resin, including epoxy, polypropylene, and polylactic acid. The incorporated kenaf fibre at 10 wt % to 40 wt % loadings was conducted using injection and a compression moulding process. The compressed materials indicated high tensile strength at 240 MPa compared to inject materials (60 MPa). Significant improvement on impact strength (9 kJ/m2) was due to the unpulled-out fibre that dispersed homogenously and hence minimize the microcrack acquire. Meanwhile, high flexural strength (180 MPa) obtained by kenaf/epoxy composites due to the fibre orientate perpendicular to the loading directions, which improve its mechanical properties. The findings indicate that the kenaf fibre reinforced thermoset materials exhibit better mechanical properties as a function to the battery tray applications.

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Section: Resultssupporting

confidence: 83%

Kenaf Composites for Automotive Components: Enhancement in Machinability and Moldability

et al. 2019

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“…Thus, lap‐shear joint test of PVA was not considered. According to the mechanical properties, we found that the 50 wt % PVA–lignin resin could compete with epoxy resin for composites …”

Section: Resultsmentioning

confidence: 99%

Poly(vinyl alcohol)–lignin blended resin for cellulose‐based composites

Zhai

Park

et al. 2018

J of Applied Polymer Sci

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Wood has limitations in strength because of its biostructural defects, including vessels. To overcome this limitation, composite materials can be innovated by breaking wood down into cellulose and lignin and reassembling them for bio‐originating strong structural materials. In this study, an ecofriendly resin was developed that was suitable for cellulose‐based composites. To overcome the low dimensional stability of lignin and to increase its interactions with cellulose, it was blended with poly(vinyl alcohol) (PVA). The PVA–lignin resin was characterized with scanning electron microscopy, Fourier transform infrared spectroscopy, thermal analysis, mechanical tensile testing, and lap‐shear joint testing. The adhesion properties of the PVA–lignin resin increased with increasing PVA content. PVA played the role of synthetic polymer and that of linker between the cellulose and lignin, like hemicellulose does in wood. The PVA–lignin resin exhibited a high miscibility, mechanical toughness, and good adhesion properties for nanocellulose composites. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46655.

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“…In the present work, the natural fibres (kenaf and sisal) employed to fabricate the porous absorbers were used without any additional surface treatments, such as chemical or physical treatments. Jayaramudu et al [7], stated that these treatments are often used to alter the mechanical, morphological and chemical resistance characteristics of the natural fibres and reduce fibre pull-out. Therefore, the natural fibres (kenaf and sisal) for the present investigation were used in their raw natural states.…”

Section: Manufacturing Of Porous Absorbermentioning

confidence: 99%

Development and Sound Absorption Testing of a Poroelastic Kenaf/Sisal Fibre Composite Trim for Lowering of Vehicle Cabin Noise Levels

Dunne

Desai

Sadiku

2018

The International Conference on Applied Mechanics and Mechanica

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The automotive industry is under pressure to produce a product (vehicle) that is more recyclable and environmentally-friendly with a high fuel efficiency. At the same time, customers are looking for a vehicle that will provide them with a comfortable ride and low cabin noise levels. Therefore, the present work is concerned with the development and characterization of new poroelastic natural fibre-based sound absorbers, which have not yet been contemplated. This newly developed material is to be recyclable and in addition, be an environmentally-friendly alternative to synthetic absorbers which are currently used as internal trims in vehicles. Therefore, several sound absorber variants, based on the above, were developed and tested in order to select an optimally performing product. These sound absorbers are made of different ratios of kenaf and sisal fibres, which are held together by Acrylonitrile Butadiene Styrene (ABS) matrix. On evaluation of the results, it was found that the proposed sound absorbers have airflow resistivity and sound absorption coefficient values compatible to that of normal practice. KEYWORDS

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Mechanical properties of uniaxial natural fabric Grewia tilifolia reinforced epoxy based composites: Effects of chemical treatment

Cited by 25 publications

References 35 publications

Kenaf Composites for Automotive Components: Enhancement in Machinability and Moldability

Kenaf Composites for Automotive Components: Enhancement in Machinability and Moldability

Poly(vinyl alcohol)–lignin blended resin for cellulose‐based composites

Development and Sound Absorption Testing of a Poroelastic Kenaf/Sisal Fibre Composite Trim for Lowering of Vehicle Cabin Noise Levels

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