The effect of oxidative bleaching treatment on Yucca fiber for potential composite application

Moghaddam, Meghdad Kamali; Karimi, Ehsan

doi:10.1007/s10570-020-03433-x

Cited by 13 publications

(9 citation statements)

References 37 publications

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“…The removal of non-cellulosic materials such as auxiliaries and dyes increased the degree of crystallinity. 45 In contrast, the crystallinity and orientation of the cellulose increased slightly after treatment with Na 2 S 2 O 4 –H 2 O 2 , proving that this combination of oxidizer/reducing agent effectively minimizes damage to the fabric.…”

Section: Resultsmentioning

confidence: 94%

Decolorization of dark-colored waste cotton fabric using redox decoloring agents

Yang²,

Zhang

et al. 2022

RSC Adv.

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Section: Resultsmentioning

confidence: 94%

Decolorization of dark-colored waste cotton fabric using redox decoloring agents

Yang²,

Zhang

et al. 2022

RSC Adv.

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“…These peaks were arisen due to the presence of cellulose in the fiber. 12 Further, the 5% treated fiber displayed increase in peak at (200) reflection compared to untreated fiber. This is the indication of increase in crystallinity of the fiber.…”

Section: Xrd Analysis Of Bpfmentioning

confidence: 90%

“…The generator settings were maintained as 45 kV/30 mA. The crystallinity of fiber 12 was determined using the equation (1) with the help of origin 2017 software. Where, A c – area of crystalline peaks; A a – area of amorphous peaks…”

Section: Methodsmentioning

confidence: 99%

Physical, chemical and thermal analysis of banana flower pistil fiber for the potential application of composite manufacturing

Dhanenderan¹,

Uvaraja²,

Raj³

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part E:

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Natural fibers are good substitute for polymer fibers due to its better characteristics like biodegradable, low cost and no harmful release. The purpose of this research is to identify a natural fiber with low cost and good characteristics. Hence, in this research, an attempt has been made to analyze the physical, chemical and thermal properties of banana flower pistil fiber (BPF). The fibers were involved into chemical treatment such as alkali (5%, 7.5% and 10%). The effect of chemical treatment on the properties of fiber was analyzed. Structural properties were analyzed by X- Ray diffraction (XRD) and Fourier Transform Infrared Spectroscopy (FTIR). The thermal properties were tested by Thermogravimetric analysis (TGA) and Differential Scanning Calorimetry (DSC). Further, the water absorption ability of the treated and untreated fiber was investigated. Results showed that the chemically treated fiber (5% alkali) displayed good physical, chemical and thermal properties compared to untreated fiber. Hence, the chemically treated BPF could be useful in the fabrication of bio-composites for industrial applications.

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“…Chemical pretreatments (CP) typically degrade side chains of esters and glycosides 30 . Alkali and bleaching processes lead to H and L liberations through disrupting cell walls and cleaving bonds, respectively 31,32 . In this sense, sodium and potassium hydroxides (NaOH and KOH) with concentrations between 8.00% and 10.0%, have shown efficacy in cleaving uronic and acetic esters, α‐ether linkages (phenolic) 33 for hemicelluloses removal and solubilization in the media 34 …”

Section: Introductionmentioning

confidence: 99%

“…30 Alkali and bleaching processes lead to H and L liberations through disrupting cell walls and cleaving bonds, respectively. 31,32 In this sense, sodium and potassium hydroxides (NaOH and KOH) with concentrations between 8.00% and 10.0%, have shown efficacy in cleaving uronic and acetic esters, α-ether linkages (phenolic) 33 for hemicelluloses removal and solubilization in the media. 34 On the other hand, the oxidative bleaching (mostly sodium chlorite) process considers oxidizing insoluble water lignin compounds to break the aryl ether, carboncarbon and β-O-4 bonds 35 which produces toxic organochlorine such as chlorine dioxide (ClO 2 ).…”

Section: Introductionmentioning

confidence: 99%

Valorization of sawdust biomass for biopolymer extraction via green method: Comparison with conventional process

Cárdenas‐Zapata

Palma‐Ramírez

Flores‐Vela

et al. 2022

Intl J of Energy Research

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Summary The valorization of sawdust (SW) biomass by‐product, to extract cellulose through alkali and bleaching processes, including side‐streams to recover hemicellulose and lignin, is performed with the intention of evaluating differences with a proposed green method (GM). The study is developed with the intention of having a process at laboratory scale without leading to the complicated nanoscale processing. This study contemplates a process with scalable characteristics for the future, which contributes to wood processing waste around the world. Particularly, agroindustrial wastes from Durango (SWT1) and Hidalgo (SWT2), local communities of Mexico, were studied. SWT1 and SWT2 samples were processed with ethanol, sodium hydroxide followed by bleaching with sodium chlorite/acetic acid to remove, extractives (E), hemicellulose (H) and lignin (L), respectively. Selected‐SWT2 was processed through a proposed GM using hydrogen peroxide/sodium hydroxide. On the basis of results including Fourier transform infrared spectroscopy, thermogravimetric/differential analysis (TGA/DTG), X‐ray diffraction (XRD), dynamic light scattering, high heating value, scanning electron microscopy techniques and chemical composition, GM was capable of producing a biomass rich in α‐cellulose (58.0%: SWT2‐C), whereas processed SWT1 and SWT2 through conventional method led to a more percentage of H, β‐ and γ‐C mixtures than α‐polymorphous; 41.0% and 51.0%, respectively. This new method could impact of an important manner to the development of biodegradable thermoplastics. The approximation, from deconvolution of TGA/DTA, led to determine adequately the composition of hemicellulose (SWT1‐C: 51.0%, SWT2‐C: 36.0–0.00%), lignin (SWT1‐C: 17.0%, SWT2‐C: 20.0%) and cellulose (SWT1‐C: 32.0%, SWT2‐C: 44.0%). XRD analysis also indicated that samples contain the following percentage of polymorphous cellulose compounds: SWT1‐C (Type II: 71.3%), SWT2‐C (Type I α: 44.6% and II: 41.4%) and SWT2‐C‐GM (Type II: 38.8%), which confirms that the combination of the type of biomass and the applied pretreatment plays a fundamental role for final applications; in this case, it can be appropriate for elastomers and thermoplastic uses. As a final point, the cellulose composition and thermal stability of both sources is comparable with the commonly used raw material for commercial products.

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The effect of oxidative bleaching treatment on Yucca fiber for potential composite application

Cited by 13 publications

References 37 publications

Decolorization of dark-colored waste cotton fabric using redox decoloring agents

Decolorization of dark-colored waste cotton fabric using redox decoloring agents

Physical, chemical and thermal analysis of banana flower pistil fiber for the potential application of composite manufacturing

Valorization of sawdust biomass for biopolymer extraction via green method: Comparison with conventional process

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