A review of coir fiber reinforced polymer composites

Adeniyi, Adewale George; Onifade, Damilola Victoria; Ighalo, Joshua O.; Adeoye, Samson Akorede

doi:10.1016/j.compositesb.2019.107305

Cited by 308 publications

(115 citation statements)

References 78 publications

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“…Further explanations and elaborations were not given from their observations. Conventionally, NaOH treatment (also known as mercerisation) helps to remove lignin and oil from the biomass as well as increasing the roughness of the cellulose [25]. It was proposed that the adsorption mechanism was either boundary layer diffusion or intra-particle diffusion or both.…”

Section: Guava (Psidium Guajava)mentioning

confidence: 99%

A mini-review of the morphological properties of biosorbents derived from plant leaves

Ighalo

Adeniyi

2020

SN Appl. Sci.

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A key feature of biosorption studies is the utilisation of different analytical techniques to evaluate several aspects of the process. Scanning electron microscopy (SEM) is used to study the morphology features of biosorbents. In this mini-review, research efforts by scientists in evaluating the morphological properties of plant leaves biosorbents was discussed. The way in which results have been interpreted and what inferences have been deduced was also discussed. Biosorbents obtained from plant leaves generally possess heterogeneous and irregular surface containing a variety of cavities, holes, voids, cracks, interstices and convolutions. NaOH pre-treatment (also known as mercerisation) helps to remove lignin and oil from the biomass as well as increasing the roughness of the base cellulose. Smoother surfaces with fewer features are observed after sorption of some chemical species (be it pollutants or a modification agent). It was observed that impregnation with nanoparticles usually leads to nanoparticle macro-clusters observable at high resolutions while any previously observed cavities, holes, ruptures and voids tends to disappear. Carbonisation and calcination gives a more porous adsorbent. Chemical modification despite reducing the total surface area of the adsorbent can actually increase the adsorption capacity due to adjustments in functional groups, effects on the solution chemistry and the improvement of the inherent affinity of the biosorbent due to the modification. SEM analysis is even more important in recent times where the functionalisation of adsorbents and biosorbents is a common practice.

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Section: Guava (Psidium Guajava)mentioning

confidence: 99%

A mini-review of the morphological properties of biosorbents derived from plant leaves

Ighalo

Adeniyi

2020

SN Appl. Sci.

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“…According to a Colombian non-profit organization that represents the companies related to chemical sector including plastics, rubber, paints, inks (coatings), and fibers, ACOPLASTICOS, the Colombian production of plastic resins was about 1.34 million tons in 2017 and polyolefins (low density polyethylene-LDPE, high density polyethylene and polypropylene-PP) represent around The reviewed literature presents an overview of the characterization of biocomposites based on chemically modified CCF [17,35]. However, less effort has been focused on the study and production of biocomposites based on untreated CCF and polyolefin blends using high-volume manufacturing processes such as extrusion and injection molding, which could be an advantage for the development of these materials in conventional plastic processing companies.…”

Section: Introductionmentioning

confidence: 99%

“…The reviewed literature presents an overview of the characterization of biocomposites based on chemically modified CCF [ 17 , 35 ]. However, less effort has been focused on the study and production of biocomposites based on untreated CCF and polyolefin blends using high-volume manufacturing processes such as extrusion and injection molding, which could be an advantage for the development of these materials in conventional plastic processing companies.…”

Section: Introductionmentioning

confidence: 99%

Injection Molding of Coir Coconut Fiber Reinforced Polyolefin Blends: Mechanical, Viscoelastic, Thermal Behavior and Three-Dimensional Microscopy Study

et al. 2020

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In this study, the properties of a polyolefin blend matrix (PP-HDPE) were evaluated and modified through the addition of raw coir coconut fibers-(CCF). PP-HDPE-CCF biocomposites were prepared using melt blending processes with CCF loadings up to 30% (w/w). CCF addition generates an increase of the tensile and flexural modulus up to 78% and 99% compared to PP-HDPE blend. This stiffening effect is caused by a decrease in the polymeric chain mobility due to CCF, the higher mechanical properties of the CCF compared to the polymeric matrix and could be an advantage for some biocomposites applications. Thermal characterizations show that CCF incorporation increases the PP-HDPE thermal stability up to 63 °C, slightly affecting the melting behavior of the PP and HDPE matrix. DMA analysis shows that CCF improves the PP-HDPE blend capacity to absorb higher external loads while exhibiting elastic behavior maintaining its characteristics at higher temperatures. Also, the three-dimensional microscopy study showed that CCF particles enhance the dimensional stability of the PP-HDPE matrix and decrease manufacturing defects as shrinkage in injected specimens. This research opens a feasible opportunity for considering PP-HDPE-CCF biocomposites as alternative materials for the design and manufacturing of sustainable products by injection molding.

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“…Obtained from the husk of the coconut palm tree, the coir fiber, the cheapest fiber in the world [53], is used for producing a wide variety of furniture materials, ropes, sacking, boats, and rugs [52]. Considering the coir fiber-based composites, the high lignin content of coir fibers causes good fiber water resistance, relatively waterproof and be chemically modified [82][83][84]. Good mechanical properties, such as elongation, allow tribological applications of composites reinforced with coir fibers [85].…”

Section: Coir Fiber Nfrcsmentioning

confidence: 99%

Tribology of Natural Fibers Composite Materials: An Overview

2020

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In the framework of green materials, in recent years, natural fiber composites attracted great attention of academia and industry. Their mechanical and tribological characteristics, such as high strength, elasticity, friction, and wear resistance, make them suitable for a wide range of industrial applications in which issues regarding a large amount of disposal are to be considered since their environmental friendliness gives them an advantage over conventional synthetic materials. Based on the recent and relevant investigations found in the scientific literature, an overview focused on the tribological characteristics of composite materials reinforced with different types of natural fibers is presented. The aim is to introduce the reader to the issues, exploring the actual knowledge of the friction and wear characteristics of the composites under the influence of different operating parameters, as well as the chemical treatment of fibers. The main experimental tribological techniques and the main used apparatus are also discussed, with the aim of highlighting the most appropriate future research directions to achieve a complete framework on the tribological behavior of many possible natural fiber composite materials.

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A review of coir fiber reinforced polymer composites

Cited by 308 publications

References 78 publications

A mini-review of the morphological properties of biosorbents derived from plant leaves

A mini-review of the morphological properties of biosorbents derived from plant leaves

Injection Molding of Coir Coconut Fiber Reinforced Polyolefin Blends: Mechanical, Viscoelastic, Thermal Behavior and Three-Dimensional Microscopy Study

Tribology of Natural Fibers Composite Materials: An Overview

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