A Review on Progress of Bagasse and Coir Fibre Composites and Their Mechanical Performances

The combined effects of alkali treatment and compression molding temperature on the flexural strength and impact resistance of woven coir fibre composites are investigated. Ten pieces of composites plates made from single-layer woven coir fibre fabricated under different process parameters were used in the study. Five pieces of the coir woven fibre were treated with 6% sodium hydroxide (NaOH) solution while another five were left untreated. The compression molding temperature were varied between room temperature (25°C), 50°C, 75°C, 100°C and 125°C. The flexural properties of the composite were evaluated using the three-point flexural test, while the impact resistance was investigated by drop weight impact tests using a specially designed indenter. The indentation radius on each test specimen was measured using a 3-D metrology system and the depth of indentation was determined from the geometry of the indenter. The results show that the maximum flexural load to failure is improved by 38.9% when the fibres were treated and the compression molding temperature is increased to 125°C. The flexural modulus generally decreased with increase in the molding temperature. The depth of indentation in the treated coir woven composites is lower than that of untreated fibre composite at all molding temperatures. The impact resistance of both untreated and treated fibre composites decreased with the increase in the compression molding temperature. Composites fabricated by molding at room temperature, 50°C and 75°C using treated fibre produced the best impact properties.

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Sustainable composites: Processing of coir fibres and application in hybrid-fibre composites

Journal of Composite Materials ◽

10.1177/0021998319886108 ◽

2019 ◽

Vol 54 (15) ◽

pp. 1947-1960 ◽

Cited By ~ 2

Author(s):

Lucas Ciccarelli ◽

Frederik Cloppenburg ◽

Sangeetha Ramaswamy ◽

Stepan V Lomov ◽

Aart Van Vuure ◽

...

Keyword(s):

Mechanical Properties ◽

Polylactic Acid ◽

High Performance ◽

Industrial Applications ◽

Coir Fibre ◽

Hybrid Fibre ◽

Fibre Composites ◽

Composite Product ◽

Composites Processing ◽

Fibre Reinforced Composites

Coir fibres, a byproduct of the coconut industry, have high performance qualities but are difficult to process by conventional textile methods. The purpose of the research is to combine the processibility of hemp and flax with the high-performance properties of coir to create a composite product worthy of industrial applications. The evaluation of coir fibre-reinforced composites focuses on the processibility of the coir fibre into a nonwoven, how well it interfaces with polylactic acid and an analysis of how the mechanical properties of the final product change when mixing coir with hemp and flax. The results show that the hybrid samples outperformed most of the researched values for coir composites, despite the reduced properties of control samples as in comparable research. Adding just 10% of either flax or hemp dramatically increased the mechanical properties compared to the pure coir–polylactic acid composite.

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Flexural, Tensile and Impact Properties of Alkali Treated Coir Fibre Composites Prepared by Compression Molding Technique

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.766-767.90 ◽

2015 ◽

Vol 766-767 ◽

pp. 90-95

Author(s):

G. Godwin ◽

K. Umanath

Keyword(s):

Mechanical Properties ◽

Weight Ratio ◽

Polymeric Materials ◽

High Strength ◽

General Purpose ◽

Coir Fibre ◽

Fibre Composites ◽

Fibre Reinforced Polymer ◽

High Initial Cost ◽

Coconut Fibre

Polymeric materials reinforced with synthetic fibres such as glass provide advantage of high stiffness and high strength to weight ratio. Despite these advantages, the widespread use of synthetic fibre-reinforced polymer composite has a tendency to decline because of their high-initial cost and most importantly their adverse environmental impact. In this work, four different composites are prepared with untreated coconut fibres, NaOH mercerized coconut fibres, KOH mercerized coconut fibres and CSM glass fibres. A lot of studies are done earlier on NaOH mercerized coconut fibre composites. But, no studies are done specifically for KOH mercerized coconut fibre composites. So, KOH mercerized coconut fibre composites are prepared in this study. General purpose polyester resin is used for preparing all the compsites. The mechanical properties of composites are studied using the flexural test, impact test and tensile test. The mechanical properties of KOH mercerized coconut fibre composites are studied and compared with the mechanical properties of NaOH mercerized coconut fibre composites, untreated coconut fibre composites and CSM glass fibre composites.

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ECO-FRIENDLY SODIUM BICARBONATE TREATMENT AND ITS EFFECT ON EPOXY/POLYESTER COIR FIBRE COMPOSITES

10.21452/bccm4.2018.10.04 ◽

2018 ◽

Author(s):

Lívia A. Oliveira ◽

Júlio C. dos Santos ◽

Luciano M. G. Vieira ◽

Valdir Mano ◽

Rodrigo S. Freire ◽

...

Keyword(s):

Sodium Bicarbonate ◽

Coir Fibre ◽

Fibre Composites

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Improved mechanical performances of unidirectional jute fibre composites developed with new fibre architectures

RSC Advances ◽

10.1039/d1ra03515k ◽

2021 ◽

Vol 11 (37) ◽

pp. 23010-23022

Author(s):

Mahmudul Hasan ◽

Abu Saifullah ◽

Hom N. Dhakal ◽

Shahjalal Khandaker ◽

Forkan Sarker

Keyword(s):

Mechanical Performance ◽

Jute Fibre ◽

Fibre Composites ◽

Mechanical Performances ◽

Novel Processes

This study detailed two novel processes, the use of stitching and PVA sizing based jute fibre UD preforms, with bamboo slice hybridization for the manufacturing of high-mechanical-performance jute composites, and significant improvement was found.

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Characterisation of Natural Fibres for Sustainable Discontinuous Fibre Composite Materials

Materials ◽

10.3390/ma13092129 ◽

2020 ◽

Vol 13 (9) ◽

pp. 2129 ◽

Cited By ~ 5

Author(s):

Ali Kandemir ◽

Thomas R. Pozegic ◽

Ian Hamerton ◽

Stephen J. Eichhorn ◽

Marco L. Longana

Keyword(s):

Mechanical Properties ◽

High Performance ◽

Material Selection ◽

Fibre Composite ◽

Single Fibre ◽

Natural Fibre ◽

Natural Fibres ◽

Fibre Composites ◽

Waste Flow ◽

Mechanical Performances

Growing environmental concerns and stringent waste-flow regulations make the development of sustainable composites a current industrial necessity. Natural fibre reinforcements are derived from renewable resources and are both cheap and biodegradable. When they are produced using eco-friendly, low hazard processes, then they can be considered as a sustainable source of fibrous reinforcement. Furthermore, their specific mechanical properties are comparable to commonly used, non-environmentally friendly glass-fibres. In this study, four types of abundant natural fibres (jute, kenaf, curaua, and flax) are investigated as naturally-derived constituents for high performance composites. Physical, thermal, and mechanical properties of the natural fibres are examined to evaluate their suitability as discontinuous reinforcements whilst also generating a database for material selection. Single fibre tensile and microbond tests were performed to obtain stiffness, strength, elongation, and interfacial shear strength of the fibres with an epoxy resin. Moreover, the critical fibre lengths of the natural fibres, which are important for defining the mechanical performances of discontinuous and short fibre composites, were calculated for the purpose of possible processing of highly aligned discontinuous fibres. This study is informative regarding the selection of the type and length of natural fibres for the subsequent production of discontinuous fibre composites.

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