Improving the Properties of Pineapple Leaf Fibres by Chemical Treatments

Siakeng, Ramengmawii; Jawaid, Mohammad; Tahir, Paridah Md.; Siengchin, Suchart; Asim, Mohammad

doi:10.1007/978-981-15-1416-6_4

Cited by 13 publications

(6 citation statements)

References 45 publications

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“…Furthermore, NaOH treatment decreased the capillary water absorption of the fiber reinforced composites by 8.9% after 24 h while linseed oil treatment decreased it by 69.8% after 24 h. A summary of some methods used to treat different types of natural fibers is presented in Table 2. From Table 3, it can be concluded that the use of alkaline solution i.e., sodium hydroxide (NaOH) is the most used method for treating different natural fibers; this is due to the fact in addition to the removal of chemicals and impurities, NaOH also increases the surface roughness of the fiber which results in enhancement of the bonding between the cement matrix and fiber and hence leading to improvement in mechanical properties of the composite in comparison to when the fiber is not treated [57,58]. Figure 5 shows a microstructural morphology of untreated and treated natural fiber (hemp) at different concentrations of NaOH, where the use of NaOH cleaned and makes the surface of the fiber rougher; however, alkali treatment has been found to reduce the tensile strength of the fiber as shown in Figure 6.…”

Section: Treatment and Modifications Of Natural Fibersmentioning

confidence: 99%

A Comprehensive Review on Sustainable Natural Fiber in Cementitious Composites: The Date Palm Fiber Case

et al. 2022

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The use of natural fibers in cementitious composites continue gaining acceptability and applicability due to the shortcomings and disadvantages of synthetic fiber; this is because natural fibers have advantages of sustainability, eco-friendliness, and economy. Biodegradable natural fibers, being low density and lightweight, with typical values of strength-to-weight ratio, aspect ratio, elastic modulus, and strength, may be competitive for substituting synthetic fibers such as glass and carbon. Indeed, natural fibers are mostly non-irritating for the skin and typically pose no troubles or issues for breathing, which is not the case with many synthetic fibers. Date palm fiber (DPF) is a natural fiber obtained as waste material from a date palm tree. In many countries, with large date production, DPF is easily available as a process by-product, with a low processing cost. Being sustainable and environmentally friendly, DPF is continuously gaining acceptability as fiber material in different composites such as concrete, mortar, gypsum composites, clay composites, and bricks. Based on the most available literature reviewed, DPF reinforced composites have been found to be a good insulation material, with higher thermal properties, thereby reducing energy consumption which consequently saves the running and maintenance cost of the building. DPF reinforced composites were reported to have higher energy absorption capacity, ductility, and bending resistance, leading to delaying crack propagation and preventing catastrophic failures of structures such as beams and slabs. Additionally, due to its lower density, DPF reinforced composites have the advantage for usage in areas prone to seismic effects, and when used for buildings, the overall weight of the building is expected to reduce hence reduction in foundation cost. The major setback of using DPF in composites is the reduction in the compressive strength of the composites and the durability performance of the composites. Therefore, for effective usage of DPF in composites to derive the maximum benefits, there is a need to devise a method of mitigating its negative effects on the compressive strength and durability performance of the Composites; this is a future study that needs to be explored for better performance of DPF in cementitious and other materials composites.

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Section: Treatment and Modifications Of Natural Fibersmentioning

confidence: 99%

A Comprehensive Review on Sustainable Natural Fiber in Cementitious Composites: The Date Palm Fiber Case

et al. 2022

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“…Lasted 60 days of biodegradation surfaces became even rougher with PCL/MF-P surface displaying intensified biodegradation agreeing with the higher weight loss as presented in Figure 11. After 90 days the biodegradation was intensified and microorganisms' colonies were visible on the specimens' surface mainly in PCL/MF-P. 55 4.10 | Differential scanning calorimetry DSC curves of biodegraded specimens during 90 days are displayed in Figure 10 and computed data from them are presented in Table 7, DSC scans of biodegraded specimens during 30 and 60 days are in the Supplementary Material.…”

Section: Optical Microscopymentioning

confidence: 99%

Biodegradation and performance of poly(ɛ‐caprolactone)/macaíba biocomposites

et al. 2021

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Given the need to produce biodegradable materials, especially plastics that contribute to environmental pollution, in this work poly(ɛ-caprolactone) (PCL) biocomposites were produced with 10%, 15%, and 20% by weight of macaíba fiber (MF) which was treated by toluene and by plasma, aiming at compounds production with high performance and biodegradability. Mechanical properties (impact, tensile, and flexion), differential scanning calorimetry, thermogravimetric, water absorption, contact angle, optical microscopy, and scanning electron microscopy analyses were evaluated. Biocomposites whose fibers were treated by plasma, displayed lower elastic modulus than PCL, the superficial fiber treatment by plasma removed the impurities keeping the oil that is an intrinsic characteristic of MF. Biodegradation tests performed according to ASTM G160-03 showed that biocomposites with 20% of treated fiber lost approximately 20% of the weight after 90 days, which is equivalent to a 25% of biodegradation acceleration in relation to PCL. All biocomposites showed rough morphology, with the presence of cracks and pores due to the biodegradation action. These results showed that the treated MFs are a promising agent to accelerate PCL biodegradation while keeping reasonable performance. Summing up PCL/MF with 10% MF displayed the best performance and is feasible to be used as general good as well as biofilm application.

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“…Then the sun-dried, sticky PALF is chemically degummed to remove the non-cellulosic elements. [5][6][7] Alkalization is the most common chemical treatment used for removing the hemicellulose and lignin as well as other non-cellulosic constituents, which are the most hydrophilic parts of ligno-cellulosic fibres. 7,8 Alkali and acid treatments are simple and cost-effective, but not eco-friendly.…”

Section: Introductionmentioning

confidence: 99%

“…[5][6][7] Alkalization is the most common chemical treatment used for removing the hemicellulose and lignin as well as other non-cellulosic constituents, which are the most hydrophilic parts of ligno-cellulosic fibres. 7,8 Alkali and acid treatments are simple and cost-effective, but not eco-friendly. Additionally, if the procedure is not performed in an appropriate way, cellulosic materials present in PALF may also be adversely affected.…”

Section: Introductionmentioning

confidence: 99%

Studies on interfacial shear strength of pineapple leaf fibre from agro-waste reinforced polypropylene composites: Influence of fibre length and carding parameters

Rahman,

Rana,

Das

et al. 2023

Journal of Thermoplastic Composite Materials

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This work investigates the potential utilisation of the agro-waste pineapple leaf fibre (PALF) as a green reinforcement in polypropylene (PP) composites. Generally, chemical treatment is used to clean the scratched PALF, and the effluents of those chemicals are discharged into nature. A new mechanical approach (carding) was used in this work to remove the remaining extraneous substances from the scratched and sun-dried PALF instead of using any chemical treatment. The percentage of sticky fibres and dust content decreased, and fibre breakage increased with the increasing number of carding passages. The individualized fibre properties were also influenced by the number of carding passages. The carding process reduced the diameter of PALF due to removal of extraneous materials. The tensile properties of raw PALF improved significantly until the fourth carding passage and further increase in the number of passages did not show any significant influence on the tenacity and modulus. Scanning electron microscopy (SEM) and Fourier-transform infrared spectroscopy (FTIR) confirmed the elimination of hemicellulose along with other gummy and waxy substances from the individualized PALF due to the carding action. The crystallinity % also increased after the carding process due to the removal of amorphous substances. As the reinforcement-matrix interfacial shear strength (IFSS) strongly influences the physico-mechanical properties of composites, IFSS of carded PALF reinforced finer and coarser PP fibre micro-bonded composites was also studied using the single fibre pull-out test (SFPT). Among different composites, the fourth carding passed PALF-reinforced finer PP fibre micro-bonded composite showed the highest IFSS. Additionally, the load- extension curves and SEM images of the tensile pulled-out surface were investigated to study the interfacial adhesion between PALF and PP micro-droplets. The increased surface roughness of PALF due to the carding action resulted in an improvement in the IFSS of PALF-reinforced PP micro-bonded composites.

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Improving the Properties of Pineapple Leaf Fibres by Chemical Treatments

Cited by 13 publications

References 45 publications

A Comprehensive Review on Sustainable Natural Fiber in Cementitious Composites: The Date Palm Fiber Case

A Comprehensive Review on Sustainable Natural Fiber in Cementitious Composites: The Date Palm Fiber Case

Biodegradation and performance of poly(ɛ‐caprolactone)/macaíba biocomposites

Studies on interfacial shear strength of pineapple leaf fibre from agro-waste reinforced polypropylene composites: Influence of fibre length and carding parameters

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