Tensile Properties and Microstructure of Single-Cellulosic Bamboo Fiber Strips after Alkali Treatment

Salih, Abeer Adel; Zulkifli, Rozli; Azhari, Che Husna

doi:10.3390/fib8050026

Cited by 39 publications

(15 citation statements)

References 27 publications

(39 reference statements)

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“…Figure 4(e) shows fibers obtained by the chemical method with retting in a 9% concentrated solution of NaOH. These fibers were found to have a rough surface, and holes appeared, which agrees with previous research outputs [55][56][57][58]. The surfaces of the fibers obtained using chemical extraction became clean.…”

Section: Thermal Analysis Of Bamboo Fiberssupporting

confidence: 89%

Experimental study of Yushania alpina bamboo fiber

Asres,

Zerayohannes,

Zekaria

et al. 2024

Mater. Res. Express

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The characteristics of bamboo fiber depend on the source species. This study investigated the properties of Yushania alpina bamboo fibers extracted using mechanical, chemical, and combined methods. Samples from each extraction method were tested for tensile strength. Scanning electron microscopy was used to examine the morphology of the fibers. Fourier transform infrared was used to trace functional group changes. The absorption capacity of the fibers was also examined. The thermal properties of the fibers were investigated using thermogravimetric analysis. The chemical compositions of the fibers were studied using a gravimetric method. In contrast to mechanically and combinedly extracted bamboo fibers, chemically extracted fiber had up to 90.84% and 67.06% increments in tensile strength, respectively. Scanning electron microscopy revealed the removal of attachments on the surfaces of the fibers extracted chemically. The diameter of the fibers extracted chemically was reduced. Fourier transform infrared showed no change in functional groups among the extracted fibers. However, lignin content was reduced in chemically extracted fibers. The absorption capacity of the fibers was encouraging for use in composites. Thermal analysis showed improved thermal properties with the chemical method. Chemical analysis revealed reduced lignin and hemicellulose compositions in chemically extracted fibers. This study suggests bamboo fibers can be used in the construction industry for sustainability.

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Section: Thermal Analysis Of Bamboo Fiberssupporting

confidence: 89%

Experimental study of Yushania alpina bamboo fiber

Asres,

Zerayohannes,

Zekaria

et al. 2024

Mater. Res. Express

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“…These rough surfaces have greater advantages in the manufacturing of composite materials because they allow effective interfacial adhesion between the polymer matrixes and the fibers. 63,64…”

Section: Resultsmentioning

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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“…Alkali-treated fibers with higher tensile strength were used for subsequent processes. Salih et al 7 investigated the effect of different alkali concentrations and soaking time on the microstructure using SEM and tensile properties of a single cellulose bamboo fiber strip. For soaking periods of 1, 3, 6, 12, 18, and 24 h, the single-cellulosic bamboo fiber was immersed in 2, 4, 6, and 8 weight percent aqueous NaOH solutions.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation on bamboo fiber reinforced epoxy polymer composite materials developed through two different techniques

Barman,

Dutta,

Bardalai

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part C:

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In this study, the thermos-mechanical characteristics of bamboo fiber-reinforced epoxy polymer composites made by compression molding and hand lay-up techniques are discussed. A lab-scale compression molding machine was fabricated for this purpose using the scrap materials of the Central workshop of Tezpur University, India. To find the suitable NaOH concentration for bamboo fiber strip treatment, bamboo strips were treated with 5, 8, 12, and 15 wt.% NaOH solutions for 12 h in each sample. It is determined that 12 wt.% NaOH treated bamboo strips were optimal for the fabrication of composites by single fiber tensile test, single fiber pull-out test, scanning electron microscopy (SEM), and Fourier transforms infrared spectroscopy (FTIR). Alkali treatment improved the interfacial strength with epoxy resin. It is seen that 8, 12, and 15 wt.% NaOH treated bamboo fiber strips become more compatible with the resin. The investigation explored the effects of mechanical and thermal characteristics of composites fabricated by the two different fabrication techniques. The thermal behavior of composites was investigated using thermogravimetric analysis (TGA). The Mechanical properties of composites produced by compression molding machine are found to be better than the hand lay-up method.

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Tensile Properties and Microstructure of Single-Cellulosic Bamboo Fiber Strips after Alkali Treatment

Cited by 39 publications

References 27 publications

Experimental study of Yushania alpina bamboo fiber

Experimental study of Yushania alpina bamboo fiber

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

Experimental investigation on bamboo fiber reinforced epoxy polymer composite materials developed through two different techniques

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