Effect of alkaline treatment on the thermal stability, degradation kinetics, and thermodynamic parameters of pineapple crown fibres

Bernardes, Giordano Pierozan; Andrade, Matheus de Prá; Poletto, Matheus

doi:10.1016/j.jmrt.2022.12.179

Cited by 16 publications

(17 citation statements)

References 55 publications

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“…Hemicellulose has been removed from the fiber after the treatment. The band at 1510 cm −1 appears in the spectra indicates the C=C bond vibration of aromatic ring which present in lignin [27]. The removal of lignin after the alkali treatment was confirmed from FTIR spectra.…”

Section: Fourier Transform Infrared Radiation (Ftir) Analysismentioning

confidence: 75%

“…The Absorption band between 3400-3000 cm −1 corresponds to O-H group stretching vibration while band between 3000-2800 cm −1 indicates C-H stretching vibration of alkane group [26,27]. The vibration peaks at 1625 cm −1 and 1240 cm −1 corresponds to the carbonyl group (C=O) and ester group (C-O) which present in hemicellulose [27,28]. These band peaks appear sharp in untreated PALF which were reduced in treated PALF.…”

Section: Fourier Transform Infrared Radiation (Ftir) Analysismentioning

confidence: 98%

“…The spectra analysis has been shown in figure 19, where the changes in band width and band height in functional group region (i.e., 1500-4000 cm −1 ) and fingerprint region (i.e., 400-1500 cm −1 ) can be examined. The Absorption band between 3400-3000 cm −1 corresponds to O-H group stretching vibration while band between 3000-2800 cm −1 indicates C-H stretching vibration of alkane group [26,27]. The vibration peaks at 1625 cm −1 and 1240 cm −1 corresponds to the carbonyl group (C=O) and ester group (C-O) which present in hemicellulose [27,28].…”

Section: Fourier Transform Infrared Radiation (Ftir) Analysismentioning

confidence: 99%

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Effects of fiber type, content, orientation, and surface treatments on the mechanical properties of PAFRP composite

Singh,

Sharma,

Singh

et al. 2023

Eng. Res. Express

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In present scenario, natural fibers are the preferred choice of manufactures to fabricate the sustainable polymer matrix composites. These composites may be a good substitute for synthetic materials after achieving the comparable strength with some treatments. Pineapple leaf fiber (PALF) contains high cellulose with low micro fibrillar angle which leads to decent inherent fiber strength. It is used for reinforcement in the proposed work to fabricate the epoxy matrix composite using hand layup method. During testing of composite, the effects of fiber content, type, and orientations on mechanical properties have been examined. Samples were prepared by varying the fiber type (short and long fiber), fiber orientations (at 0°, 90°, and 45°) and fiber contents by weight % (i.e., 5, 10, 15 and 25). The results of mechanical characterization reveal that the tensile and flexural strength for short fiber composite is found maximum at 25% of fiber content (20.85 MPa and 42.70 MPa, respectively). However, long fiber reinforced composite with 5% of fiber content exhibits maximum tensile and flexural strength as: 35.72 MPa and 56.19 MPa. The maximum flexural strength and impact strength of composite were found as 52.98 MPa and 25.30 J m−2, respectively when the fibers are oriented at 0°. The maximum values of water absorption in composite were found as: 1.74% for short fiber and 1.25% for long fiber reinforced composites. The Fourier transform infrared radiation (FTIR) spectroscopy confirms the removal of non-cellulose contents within the composite. Finally, the morphological analysis was carried out to find the debonding, splitting and pull-out of fibers within the composites which are the major reasons of composite failure.

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Section: Fourier Transform Infrared Radiation (Ftir) Analysismentioning

confidence: 75%

Section: Fourier Transform Infrared Radiation (Ftir) Analysismentioning

confidence: 98%

Section: Fourier Transform Infrared Radiation (Ftir) Analysismentioning

confidence: 99%

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Effects of fiber type, content, orientation, and surface treatments on the mechanical properties of PAFRP composite

Singh,

Sharma,

Singh

et al. 2023

Eng. Res. Express

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“…Natural fibers such as banana, sisal, hemp, flax, bamboo, ramie, pineapple crown fibers, and jute have been used as polymer reinforcement. [7][8][9][10][11][12] Because of two factors, natural fibers are frequently employed in hybridization with synthetic fibers. Natural fibers are mechanically inferior to glass, carbon, and Kevlar fibers for two reasons: first, they have poor mechanical qualities, and second, they are hydrophilic.…”

Section: Introductionmentioning

confidence: 99%

“…Natural fibers such as banana, sisal, hemp, flax, bamboo, ramie, pineapple crown fibers, and jute have been used as polymer reinforcement. 7–12…”

Section: Introductionmentioning

confidence: 99%

Tribology analysis of MMT nanoclay alkali-treated coconut sheath reinforced hybrid composite

Srinivasan

Pragadish

Selvam

et al. 2023

Composites and Advanced Materials

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This research paper focuses on the tribology analysis of MMT - Montmorillonite nanoclay alkali-treated coconut sheath reinforced hybrid composite. The study aims to analyze the mechanical properties of coconut sheath reinforced polymer composites as compared to traditional synthetic fibers. The specific impact of MMT clay on the material’s mechanical properties is also considered. The experimental method involves the use of compression molding for fabrication, and various treatments are applied to the coconut sheath to improve its mechanical properties. The microstructure, tensile, flexural, and impact characterization of the specimens are analyzed. The results indicate that alkali-treated coconut sheath outperforms untreated coconut sheath in terms of surface quality. Additionally, the addition of MMT clay improves the bonding and surface area coverage, resulting in better mechanical properties. However, the brittleness of the treated coconut sheath specimen increased, reducing its energy absorption in impact tests. Overall, the study highlights the potential of coconut sheath as a natural fiber reinforcement for polymer composites and the impact of MMT clay on its mechanical properties.

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Material Advancements in Plant/Artificial Fiber-Based Woven and Non-woven Fabrics and Their Composites

Miah,

Wang,

Zhu

2024

Composites Science and Technology

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Effect of alkaline treatment on the thermal stability, degradation kinetics, and thermodynamic parameters of pineapple crown fibres

Cited by 16 publications

References 55 publications

Effects of fiber type, content, orientation, and surface treatments on the mechanical properties of PAFRP composite

Effects of fiber type, content, orientation, and surface treatments on the mechanical properties of PAFRP composite

Tribology analysis of MMT nanoclay alkali-treated coconut sheath reinforced hybrid composite

Material Advancements in Plant/Artificial Fiber-Based Woven and Non-woven Fabrics and Their Composites

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