Development of green pultruded composites using kenaf fibre: influence of linear mass density on weathering performance

Zamri, Mohd Hafiz; Osman, M.R.; Akil, Hazizan Md; Shahidan, M.H.A.; Ishak, Z. A. Mohd

doi:10.1016/j.jclepro.2016.03.026

Cited by 12 publications

(12 citation statements)

References 28 publications

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“…UV radiation and a moist environment degraded lignin and left the hydrophilic cellulose content in fiber . Moreover, the surface erosion further aggravated the extractive removal that caused the degradation of lignin.…”

Section: Resultsmentioning

confidence: 99%

“…Moreover, the surface erosion further aggravated the extractive removal that caused the degradation of lignin. High water absorption in hydrophilic cellulose promoted an oxidation reaction and facilitated the penetration of light, thereby accelerating the photodegradation effect in composites . The photodegradation of lignin underwent the formation of chromophoric functional groups which had the characteristic of a yellow color .…”

Section: Resultsmentioning

confidence: 99%

“…The FT‐IR analysis shows the degradation of lignin and other cellulosic components of the KF, as well as the polymer matrices, since the degradation forms new carbonyl groups through chain scission and cross‐linking as a consequence of photodegradation . The FT‐IR spectra of weathered samples reveal several changes, especially at 1,720 cm −1 , which can be attributed to the C=O stretching vibration .…”

Section: Resultsmentioning

confidence: 99%

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Durability of alkali and heat‐treated kenaf fiber/unsaturated polyester composite fabricated by resin transfer molding under natural weathering exposure

et al. 2017

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Nonwoven kenaf fiber (KF) mat-reinforced unsaturated polyester resin composites were exposed to a natural weathering environment for 12 months. The composites were prepared using vacuum-assisted resin transfer molding (RTM). Prior to molding, the KF mat was treated by immersing it in 6% NaOH solution for 3 hrs and by heating it at 140°C for 10 hrs, respectively. The influences of weathering exposure on the composites with respect to the different treatments were investigated using flexural properties, fracture toughness, Fourier transform infrared, thermal stability, color and scanning electron microscopy analyses. Natural weathering reduced the flexural and fracture toughness due to damage to composite structures, the formation of microcracks on the sample surface, discoloration, and chemical content alteration.A relatively better durability in terms of flexural properties was exhibited by alkalitreated KF composites, although poor durability in fracture toughness was observed due to the improved fiber-matrix adhesion. K E Y W O R D Salkali treatment, heat treatment, natural weathering, nonwoven kenaf fiber, resin transfer molding

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Durability of alkali and heat‐treated kenaf fiber/unsaturated polyester composite fabricated by resin transfer molding under natural weathering exposure

et al. 2017

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“…For example, the twill weave fabrics have optimum mechanical performance even after absorption of moisture. For certain yarn architecture, a lower linear mass density of reinforcing natural yarns provides the composite with greater resistance toward moisture, while retaining at the same time optimum mechanical properties during the moisture exposure period [47][48][49][50][51][52][53][54]. The moisture absorption of natural composites is influenced by the fiber arrangement within the structure of the composite.…”

Section: J Compos Sci 2019 3 X 2 Of 40mentioning

confidence: 99%

Critical Review of the Parameters Affecting the Effectiveness of Moisture Absorption Treatments Used for Natural Composites

2019

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Natural composites can be fabricated through reinforcing either synthetic or bio-based polymers with hydrophilic natural fibers. Ultimate moisture absorption resistance at the fiber–matrix interface can be achieved when hydrophilic natural fibers are used to reinforce biopolymers due to the high degree of compatibility between them. However, the cost of biopolymers is several times higher than that of their synthetic counterparts, which hinders their dissemination in various industries. In order to produce economically feasible natural composites, synthetic resins are frequently reinforced with hydrophilic fibers, which increases the incompatibility issues such as the creation of voids and delamination at fiber–matrix interfaces. Therefore, applying chemical and/or physical treatments to eliminate the aforementioned drawbacks is of primary importance. However, it is demonstrated through this review study that these treatments do not guarantee a sufficient improvement of the moisture absorption properties of natural composites, and the moisture treatments should be applied under the consideration of the following parameters: (i) type of hosting matrix; (ii) type of natural fiber; (iii) loading of natural fiber; (iv) the hybridization of natural fibers with mineral/synthetic counterparts; (v) implantation of nanofillers. Complete discussion about each of these parameters is developed through this study.

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“…M.H. Zamri et al [42] investigate on development of green pultruded composites using kenaf fiber: influence of linear mass density on weathering performance. This research reported the performance of pultruded kenaf fiber reinforced composites after exposed to natural weathering condition up to 200 days.…”

Section: Kenaf Fiber Filament Wound Tubesmentioning

confidence: 99%

Natural Fiber Filament Wound Composites: A Review

2017

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Abstract. In recent development, natural fibers have attracted the interest of engineers, researchers, professionals and scientists all over the world as an alternative reinforcement for fiber reinforced polymer composites. This is due to its superior properties such as high specific strength, low weight, low cost, fairly good mechanical properties, non-abrasive, eco-friendly and bio-degradable characteristics. In this point of view, natural fiber-polymer composites (NFPCs) are becoming increasingly utilized in a wide variety of applications because they represent an ecological and inexpensive alternative to conventional petroleum-derived materials. On the other hand, considerable amounts of organic waste and residue from the industrial and agricultural processes are still underutilized as low-value energy sources. This is a comprehensive review discussing about natural fiber reinforced composite produced by filament winding technique.

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Development of green pultruded composites using kenaf fibre: influence of linear mass density on weathering performance

Cited by 12 publications

References 28 publications

Durability of alkali and heat‐treated kenaf fiber/unsaturated polyester composite fabricated by resin transfer molding under natural weathering exposure

Durability of alkali and heat‐treated kenaf fiber/unsaturated polyester composite fabricated by resin transfer molding under natural weathering exposure

Critical Review of the Parameters Affecting the Effectiveness of Moisture Absorption Treatments Used for Natural Composites

Natural Fiber Filament Wound Composites: A Review

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