Processing and Characterization of Banana Fiber/Epoxy Composites: Effect of Alkaline Treatment

Bakri, Muhammad Khusairy Bin; Jayamani, Elammaran; Hamdan, Sinin

doi:10.1016/j.matpr.2017.02.167

Cited by 44 publications

(31 citation statements)

References 15 publications

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“…The FTIR spectrum for the FUNaOH sample showed that the hemicellulose and part of the lignin were removed with the alkaline treatment, since the bands at 1738 and 1236 cm −1 were not observed, and the spectral region of 1550 at 1300 cm −1 decreased in intensity. These changes are related to the fact that hemicellulose is soluble even at low concentrations of alkalis, causing it to be partially or totally removed from the fiber, thus confirming the chemical modification . After the alkaline treatment, the band of the hydroxyl region decreased.…”

Section: Resultsmentioning

confidence: 79%

“…After the alkaline treatment, the band of the hydroxyl region decreased. This can be related to the fact that the ‐OH bonds react to form a ‐O‐Na structure on the surface of the fiber, according to Bakri et al . and Sampathkumar et al .…”

Section: Resultsmentioning

confidence: 99%

“…In contrast, the alkali treatment of the fibers led to a cleaner, yet rougher surface as shown in Figure (b). This is due to the dissolution of lignin, hemicellulose, and waxy materials that increase the inter‐fibrillar region, and impart a rough texture to the surface . A decrease in diameter and more longitudinal grooves on the surfaces can be observed when compared to the FU.…”

Section: Resultsmentioning

confidence: 99%

“…when characterizing different agroindustrial wastes, grape stalks showed elongated particles with an aspect ratio (length/diameter) considerably greater than 1 (microfibers). The length/width ratio gives an indication of the potential strength properties of fiber‐filled composites due to higher surface roughness …”

Section: Resultsmentioning

confidence: 99%

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Grape stalk fibers as reinforcing filler for polymer composites with a polystyrene matrix

Borsoi

Menin

Lavoratti

et al. 2019

J of Applied Polymer Sci

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Lignocellulosic fibers have been one of the most used reinforcements for different types of composites. In this context, grape stalks—often discarded in landfills—can be a potential reinforcement for composites. The present study aimed to incorporate in natura and alkali treated grape stalks into the polystyrene (PS) matrix. Initially, the grape stalks were treated with NaOH and 10, 20, and 30 wt % of stalks were added into the PS matrix. The alkaline treatment of the grape stalk fibers promoted the removal of hemicellulose and the partial removal of lignin, thus increasing the surface roughness and crystallinity index of the fibers. An improvement in the mechanical and dynamic‐mechanical properties and an increase in the maximum degradation temperature of the composites were observed. In conclusion, the use of grape stalks is a promising alternative for reinforcing composites, and, in addition, a more proper destination can be given to this type of residue. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47427.

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Section: Resultsmentioning

confidence: 79%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

See 2 more Smart Citations

Grape stalk fibers as reinforcing filler for polymer composites with a polystyrene matrix

Borsoi

Menin

Lavoratti

et al. 2019

J of Applied Polymer Sci

View full text Add to dashboard Cite

show abstract

“…For instance, treating sisal fibers with 5% NaOH makes the sisal/starch composite absorb a higher amount of moisture relative to the untreated one, while there is a slight reduction noticed in the diffusivity of the treated composite [121]. The alkalization of banana fibers swells the structure of the treated fiber because of considerable alteration in the morphology, structure, dimensions, and mechanical properties [122]. The combination of silane and alkali treatments exhibits a superior enhancing effect on the moisture absorption properties relative to single treatment [123][124][125].…”

Section: Alkalizationmentioning

confidence: 99%

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

Al-Maharma

Al-Huniti

2019

J. Compos. Sci.

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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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Properties of Seaweed Fiber Reinforced Polypropylene Composite: Effect of Alkaline Treatment

Abdullah

Salim

Roslan

2022

Macromolecular Symposia

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Natural fibers are favored to use as raw resources in making reinforced polymer composite because they are abundant and inexpensive. However, natural fiber-reinforced composites are suggested to be treated to improve their qualities before being employed in the production of composites. The seaweed fibers are treated with an alkaline medium in this study. Alkaline treatment of seaweed/polypropylene (SW/PP) composites is expected to increase their physical and mechanical qualities. Extrusion and hot-pressing processes are used in the production of this composite. The results reveal that after being treated, the SW/PP composite has a low proportion of water absorption compared to the untreated SW/PP composite. Untreated SW/ PP composites have a higher melt flow resistance (MRF), which indicates the presence of waxy and cellulose constituents and makes the composites flow easier in the melt indexer. The tensile strength of composites is higher in treated SW/PP composites, with a value of 0.1944 MPa compared to 0.1311 MPa in untreated SW/PP composites. Furthermore, the impact strength of the untreated SW/PP composites is low, at 28.9910 J m -1 , compared to the treated SW/PP composites, which has a higher energy value of 59.5800 J m -1 . Alkaline treatment improves the properties of natural fibers in the composite, according to these findings.

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Processing and Characterization of Banana Fiber/Epoxy Composites: Effect of Alkaline Treatment

Cited by 44 publications

References 15 publications

Grape stalk fibers as reinforcing filler for polymer composites with a polystyrene matrix

Grape stalk fibers as reinforcing filler for polymer composites with a polystyrene matrix

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

Properties of Seaweed Fiber Reinforced Polypropylene Composite: Effect of Alkaline Treatment

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