Characterization and optimization of the properties of untreated high land bamboo fibres

Ebissa, Dawit Tessema; Tesfaye, Tamrat; Worku, Dellele; Wood, David

doi:10.1016/j.heliyon.2022.e09856

Cited by 7 publications

(2 citation statements)

References 33 publications

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“…The average length and diameter of BFs increased and then decreased with the increasing age of bamboo. The increasing content of non-cellulose, the major component of the fibers, is responsible for the change in fiber diameter with age (Ebissa et al 2022). The general trend for most of the processes was that the fineness decreased with the increase in length.…”

Section: Microstructure and Sizementioning

confidence: 97%

Dimensions, microstructure, chemical, and hygroscopic analysis of steam-exploded bamboo fibers at different ages

Zou,

Zhao,

Zhang

et al. 2024

BioRes

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Bamboo fibers (BFs) at different ages (1, 3, and 5 years old) were prepared by pretreatment and steam explosion. The results demonstrated that the separation degrees of BFs increased with the age of the bamboo. The combined effects of pretreatment and steam explosion partially removed the hemicellulose and lignin from BFs, while the crystalline structure of cellulose remained unaltered. The water vapor adsorption isotherms of BFs at different ages all showed a typical S-shape and could be classified as type II, and the hysteresis of BFs increased with the age of the bamboo. After pretreatment and steam explosion, the tissues in the vascular bundle were effectively crushed, and the parenchyma tissues were dislodged and separated from the fiber sheath. During the steam explosion process, hot steam penetrated the bamboo’s pores, including the pores induced by pretreatment. This caused fractures and delamination in the interface between the vascular bundle and the parenchyma tissues. These cracks progressed layer by layer along the vascular bundle interface, leading to the fracture of the bamboo.

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Section: Microstructure and Sizementioning

confidence: 97%

Dimensions, microstructure, chemical, and hygroscopic analysis of steam-exploded bamboo fibers at different ages

Zou,

Zhao,

Zhang

et al. 2024

BioRes

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“…[11][12][13] The hydrophobicity of the natural fiber must be increased through chemical treatments with appropriate coupling agents or by coating with appropriate resin to generate composites with improved mechanical properties and environmental performance. 14,15 The stiffness, strength, and moisture resistance of a composite can be improved by combining a natural fiber with a stronger and more corrosion-resistant synthetic fiber, such as glass or carbon fiber. Synthetic fibers are employed for several purposes.…”

Section: Introductionmentioning

confidence: 99%

Determinations and performance investigations of hybrid composite properties for hydrokinetic turbine blades

Ebissa

Tesfaye

Worku

et al. 2023

Journal of Composite Materials

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In this experimental study, hybrid composite properties for hydrokinetic turbine blades were determined, and its performance was examined. The reinforcements included glass fiber, treated and untreated highland bamboo fiber, reinforced polyester-based composites and their hybrid composites, as well as row bamboo (bamboo culm). The row bamboo was prepared on the bamboo culm’s outer surface to get rid of any leftovers, before cutting in accordance with the specimen test standards. In order to make hybrid composite materials, polyester resin was mixed with fibers in the proportions of bamboo fiber/glass fiber (50%/50%), and fiber/matrix (30%/70%). The composite containing glass fiber has a flexural strength that is 12% and 21% higher than materials reinforced with alkali-treated and untreated highland bamboo fiber reinforced composites respectively. The alkali treatment of highland bamboo fiber improved its physical-mechanical properties, making it suitable for use different application. Alkaline treatment boosts the composite’s tensile and compressive strength by 37% and 3.4% for composite reinforced with untreated bamboo fiber, and 10.2% and 23.8% for composite reinforced with glass fiber, respectively. The fiber density of highland bamboo was increased by removing less dense non-cellulosic components (hemicellulose and lignin). However, the fiber’s moisture absorption is the main issue in using it in a composite that works submerged in water. This study investigated whether incorporating glass fiber in highland bamboo-glass fiber polyester hybrid composite reduces the composite material’s water uptake. A reduction was found, however, the density was increased. It is challenging to employ row bamboo for the construction of hydrokinetic turbine blades as water ingress of the composite must be avoided even in the presence of erosion caused by cavitation and impact with foreign bodies in the water.

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Extraction and characterization of bark fibers from Ethiopian Ficus thonningii tree

Adamu,

Shitahun,

Adane

et al. 2024

Discov Mater

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Characterization and optimization of the properties of untreated high land bamboo fibres

Cited by 7 publications

References 33 publications

Dimensions, microstructure, chemical, and hygroscopic analysis of steam-exploded bamboo fibers at different ages

Dimensions, microstructure, chemical, and hygroscopic analysis of steam-exploded bamboo fibers at different ages

Determinations and performance investigations of hybrid composite properties for hydrokinetic turbine blades

Extraction and characterization of bark fibers from Ethiopian Ficus thonningii tree

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