Effect of Surface Treatment on the Physical, Chemical, and Mechanical Properties of Palm Tree Leaf Stalk Fibers

The influence of fiber loading and chemical treatment of Urena lobata natural fiber loading (5, 10, 15, 20, 25, 30, and 35 wt%) on the physical, wear, and thermal stability of polypropylene-based composites was investigated. Urena lobata fibers were treated with 6 wt% NaOH solution. Both the untreated and treated Urena lobata/polypropylene composites were produced by compression molding. The physical (density and water absorption) and abrasion properties of the composites were then evaluated. Thereafter, the thermal stability of the fibers and composites were analyzed. The alkaline-treated Urena lobata fiber-reinforced polypropylene composites showed improvement in the density (1.04–1.74 g/cm3) and wear resistance (19.57–26.17 mm3) than the untreated Urena lobata fiber/polypropylene composites. However, the treated Urena lobata fiber/polypropylene composites absorbed more water than the untreated Urena lobata fiber/polypropylene composites. Then the treated fiber composites were more thermally stable than the untreated fiber composites due to enhanced fiber–matrix adhesion obtained by alkaline treatment of the fibers.

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“…34 Also, the alkaline treatment leads to increase in the cellulose content, which in turn can positively affect the density of the composites. 35…”

Section: Resultsmentioning

confidence: 99%

“…34 Also, the alkaline treatment leads to increase in the cellulose content, which in turn can positively affect the density of the composites. 35 Water absorption properties. A lot of factors are reported to influence the water absorption properties of natural fiber-reinforced polymer composites.…”

Section: Physical Properties Of the Compositesmentioning

confidence: 99%

Physical and abrasive wear behaviour of Urena lobata fiber-reinforced polymer composites

Njoku

Omotoyinbo

Alaneme

et al. 2020

Journal of Reinforced Plastics and Composites

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“…The lignin presented characteristic peaks over the range of 1500~1600 cm −1 , which were attributed to the aromatic C=C stretching of the aromatic ring of the lignin 18 . In addition, the windmill palm fiber exhibited a peak at 1740 cm −1 , which corresponded to the C=O stretching of the CH 3 CO groups of the hemicelluloses 19 . While, in the cases of the alkalized and acetylated fibers, these peaks were absent.…”

Section: Resultsmentioning

confidence: 99%

Investigation of the hydrophobic and acoustic properties of bio windmill palm materials

Chen

Wang

You

et al. 2018

Sci Rep

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Windmill palm fibers are an abundant lignin-cellulose fiber resource. Single palm fibers can be prepared using an alkali treatment method. However, these fibers have hydrophilic surfaces, and following drying the fibers exhibit serious aggregation. This limits their application as acoustic materials. In this work, both alkali and acetylation treatments were used to modify the characteristics of windmill palm fibers. These treatments caused the surface of the fibers to become hydrophobic and increased the specific area and free vacuum space of the fibers, thus lowering energy loss. Scanning electron microscope observations combined with Fourier-transform infrared spectroscopy showed that the acetylation treatment resulted in the substitution of hydroxyl groups with acetyl groups, and the formation of nanoscale pores (10~50 nm). The results of the moisture-absorption and contact-angle tests showed that the moisture regain value decreased to 3.86%, and the contact angle increased to above 140° after acetylation treatment. The average sound absorption coefficients of the alkalized and acetylated nonwoven fabrics were 0.31 and 0.36, respectively. The masses of the acetylated samples were 50% those of the windmill palm sheath samples.

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“…The changes in the functional group that occurred in the WPF, before and after soil degradation, are shown in Figure 2 . The peak at about 1740 cm −1 indicated the presence of C=O stretching in the acetyl groups of hemicelluloses [ 18 , 19 ]. The peak disappeared at 1741 cm −1 for AF, which indicated the removal of hemicelluloses by the alkali treatment.…”

Section: Resultsmentioning

confidence: 99%

Effects of Biodegradation on the Structure and Properties of Windmill Palm (Trachycarpus fortunei) Fibers Using Different Chemical Treatments

et al. 2017

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In this work, windmill palm fiber (WPF), alkali-treated fiber (AF) without hemicellulose and bleached fiber (BF) without lignin were prepared and buried in soil for 30, 60 and 90 days. The surface morphology, chemical composition, crystallinity degree, mechanical properties, and residual mass rate of the samples, before and after biodegradation, were investigated. According to the results, soil burial degradation can remove the parenchyma cells and silica-bodies of WPF and deplete droplets containing the lignin of alkali-treated fiber after it has been buried for 30 days (AF30), and degradation of the single fiber cell wall of bleached fiber after it has been buried for 30 days (BF30). Buried in natural soil, lignin has a slower degradation rate than that of hemicellulose. WPF showed no significant differences in tensile strength after burial in soil for 90 days, because of the integrity fiber structure decreased the biodegradation. The most serious decrease, about 43%, in tensile strength occurred in AF after it had been buried for 90 days (BF90). This basic knowledge may be helpful for windmill palm fiber applications, especially for biodegradable composites.

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Effect of Surface Treatment on the Physical, Chemical, and Mechanical Properties of Palm Tree Leaf Stalk Fibers

Cited by 30 publications

References 29 publications

Physical and abrasive wear behaviour of Urena lobata fiber-reinforced polymer composites

Physical and abrasive wear behaviour of Urena lobata fiber-reinforced polymer composites

Investigation of the hydrophobic and acoustic properties of bio windmill palm materials

Effects of Biodegradation on the Structure and Properties of Windmill Palm (Trachycarpus fortunei) Fibers Using Different Chemical Treatments

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