The bright side of cellulosic hibiscus sabdariffa fibres: towards sustainable materials from the macro- to nano-scale

Rana, Ashwani K.; Thakur, Vijay Kumar

doi:10.1039/d1ma00429h

Cited by 19 publications

(12 citation statements)

References 143 publications

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“…13,35 Cellulose was hydrophilic and subjected to dehydration, in which water was released due to decreased intermolecular interactions and hydrogen bonding during regeneration. 32,36 The weight loss in these ranges is about 16.12%.…”

Section: Independent Variables Symbolmentioning

confidence: 98%

Astragalus gombo as a renewable source of cellulose: Experimental and response surface approaches

Ben Seghir,

Hemmami,

Layachi

et al. 2023

Polymers from Renewable Resources

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The utilization of Astragalus Gombo (AG) as a primary ingredient in this research has been employed for the purpose of cellulose synthesis. The objective of this study was to explore the potential of utilizing agricultural waste, specifically AG, as a novel source for cellulose production. The cellulose underwent a three-step preparation process. Initially, deproteinization was conducted, followed by lipid extraction. Subsequently, a bleaching treatment was applied to eliminate lignin and hemicellulose. This study investigates the optimization of cellulose extraction from agricultural residues through the utilization of analysis of variance. Various extraction durations (1, 2, and 4 h), extraction temperatures (30, 60, and 100°C), and concentrations of NaOH (5, 10, and 20%) were employed. The optimal circumstances can be ascertained employing the 3-D response surface and contour plot generated from the mathematical models. The most favorable conditions for extraction involve maintaining an extraction temperature of 30°C, an extraction period of 2 h, and a NaOH concentration of 5%. Based on the regression analysis, the estimated final mass is projected to be 1356 g, with a regression coefficient of 90.96%, given the specified parameters. The cellulose was subjected to a comprehensive analysis using several spectroscopic, thermal, morphological, and structural techniques, including Fourier Transform Infrared Spectroscopy (FTIR), Differential Scanning Calorimetry (DSC), X-ray Diffraction (XRD), Thermogravimetric Analysis (TGA), Differential Thermogravimetry (DTG), and Scanning Electron Microscopy (SEM). The preparations of cellulose from AG were executed successfully. Furthermore, the findings of this study indicate that AG represents a newly identified environmentally sustainable resource.

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Section: Independent Variables Symbolmentioning

confidence: 98%

Astragalus gombo as a renewable source of cellulose: Experimental and response surface approaches

Ben Seghir,

Hemmami,

Layachi

et al. 2023

Polymers from Renewable Resources

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“…[ 7–11 ] The plants and trees have an essential basic reinforcing element called “cellulose,” which endow these forest‐based assets with tremendous strength and capabilities. [ 8,12,13 ] Further, the discrete hierarchical cellulose structure that spans from the macroscale to nanoscale dimensions opens the opportunity to investigate these plant‐/trees‐based materials at nanoscale dimensions [ 7,8,14–17 ] (Figure 1).…”

Section: Introductionmentioning

confidence: 99%

“…[7][8][9][10][11]-The plants and trees have an essential basic reinforcing element called "cellulose," which endow these forestbased assets with tremendous strength and capabilities. [8,12,13] Further, the discrete hierarchical cellulose structure that spans from the macroscale to nanoscale dimensions opens the opportunity to investigate these plant-/trees-based materials at nanoscale dimensions [7,8,[14][15][16][17] (Figure 1). Conversion of cellulose microfibrils, which are composed of cellulose, lignin, and hemicelluloses, into nano cellulosic form is necessary for sustainable development involving nanotechnology in both industrial and research fields because of its alluring characteristics unlike conventional cellulosic products, including high surface area, outstanding mechanical qualities, abundant hydroxyl groups for surface functionalization, and bio-compatible nature.…”

Section: Introductionmentioning

confidence: 99%

Impact of physico‐chemical properties of nanocellulose on rheology of aqueous suspensions and its utility in multiple fields: A review

Rana

Thakur

2023

Vinyl Additive Technology

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Nanocellulose (NC), due to its sustainable nature, high aspect ratio, superior mechanical strength, and availability of functionalizable OH groups, has been widely utilized as reinforcement in numerous fluids/plastics. The physico-chemical properties of NC, like surface characteristics, dimensions/ aspect ratio and their concentration, significantly impact the interparticle interactions, such as the extent of hydrogen bonding, van der Waal forces, hydrophobicity, electrostatic attraction/repulsion, and cellulose entanglement, and have been found to play a critical role in regulating the overall rheological characteristics of fluids. The functionalized NC aqueous suspension exhibited unique shear thinning properties, thixotropic behavior, and quick steady-state viscosity recovery and viscoelastic properties. However, upon adding functionalized NC to other fluids, a different impact was noticed. For instance, it improved the viscosity, G 0 and mechanical stability of bio-ink; the setting time and mechanical strength of cementitious fluids; increased the filtration performance and provided a unique thermo-thickening impact in case of water-based drilling-fluid; enhanced viscosity with time and heat in case of oil recovery, and so forth. Keeping in view the notable dependence of the rheology of fluids on NC additives, in the present review article, the impact of various physico-chemical properties of NC additives on the rheological behavior of NC aqueous suspension and its utility as a rheology modifier in multiple advanced fields has been explored. This review article, compared to previous studies, warrants an update on the impact of recent NC surface functionalization/ blending techniques employed and NC aspect ratio on specific properties of multiple advanced fluids.

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“…However, the development and application of PLA are limited due to its high price, unstable mechanical properties, and low thermal stability, which are in urgent need of improvement [ 12 , 13 ]. Compounding other plant fibers with PLA can help overcome some of these limitations as plant fibers have strong mechanical properties which they can lend to the polymer [ 14 , 15 ]. These composites of PLA and plant fibers are also biodegradable, maintaining the PLA’s environmental-friendliness [ 16 , 17 ].…”

Section: Introductionmentioning

confidence: 99%

Novel Environmentally Friendly Covalent Organic Framework/Polylactic Acid Composite Material with High Chemical Stability for Sand-Control Material

Yang

Liu

2023

Polymers

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A new high-strength, thermally stable, and degradable covalent organic framework (COF) -modified polylactic acid fiber (PLA) material (COF-PLA) was constructed for reinforcing the PLA material, to be used to produce environmentally friendly sand barriers. The micrographs, structure, thermal stability, and photodegradation products of COF-PLA were investigated. The results indicated that the COF material was compatible with PLA, and that the COF-PLA material took on the merits of the COF, so that it had a more regular arrangement, smoother surface, and smaller size, and was more thermostable than PLA alone. The successful incorporation of the COF improved the thermal stability of PLA. The initial pyrolysis temperature of the COF-PLA material is 313.7 °C, higher than that of the PLA material at 297.5 °C. The photodegradation products of COF-PLA and PLA indicated that the COF and PLA materials were mixed in a complex manner. After photodegradation, the COF-PLA material can produce melamine molecules that can neutralize the lactic acid and CO2 produced by PLA, which can maintain the acid–base balance in sandy soil and is beneficial to plant growth. Therefore, COF-PLA degradation does not cause pollution, making it a promising sand-control material.

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The bright side of cellulosic hibiscus sabdariffa fibres: towards sustainable materials from the macro- to nano-scale

Abstract: Plant fibres are helically twisted cellulosic materials, which are bonded together by lignin and hemicelluloses matrices and their physical, mechanical and chemical properties enormously depend on the relative proportions of...

Cited by 19 publications

References 143 publications

Astragalus gombo as a renewable source of cellulose: Experimental and response surface approaches

Astragalus gombo as a renewable source of cellulose: Experimental and response surface approaches

Impact of physico‐chemical properties of nanocellulose on rheology of aqueous suspensions and its utility in multiple fields: A review

Novel Environmentally Friendly Covalent Organic Framework/Polylactic Acid Composite Material with High Chemical Stability for Sand-Control Material

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