A novel eco-friendly source of cellulose acetate extracted from Astragalus gombo seeds: thermal, structural, and morphological characterization

Kouadri, Imane; Layachi, Abdelheq; Boubendira, Khaled; Amor, Ilham Ben; Hemmami, Hadia; Zeghoud, Soumeia; Seghir, Bachir Ben; Rebiai, Abdelkrim

doi:10.1007/s13399-023-04568-0

Cited by 4 publications

(3 citation statements)

References 44 publications

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“…In Figure 5b, TAC and TAC−X films show three diffraction peaks at 2θ positions of 9.8°, 17.3° and 21.6°. The peak at 2θ=9.8° is a characteristic peak of semi‐crystalline acetylated cellulose derivatives [34,35] . After doping CNCs, the peak intensity of the TAC film at 2θ=21.6° raises, and as the amount of CNCs added increases, the diffraction peak shifts to the right, approaching 22.5°.…”

Section: Resultsmentioning

confidence: 99%

“…The peak at 2θ = 9.8°is a characteristic peak of semi-crystalline acetylated cellulose derivatives. [34,35] After doping CNCs, the peak intensity of the TAC film at 2θ = 21.6°raises, and as the amount of CNCs added increases, the diffraction peak shifts to the right, approaching 22.5°. This may be caused by the high crystallinity of CNCs.…”

Section: Ftir and Xrd Patterns Of The Filmmentioning

confidence: 99%

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Preparation and Characterization of Cellulose Nanocrystal‐Doped Cellulose Triacetate Optical Films by Sol‐Gel Process

Zhou,

Tang,

Zhang

et al. 2024

ChemistrySelect

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A bio‐based nanocomposite optical film was obtained through a simple sol‐gel process and solution casting. The dispersion effect of cellulose nanocrystals (CNCs) gel and the optical properties, mechanical performance and thermal stability of CNC‐doped cellulose triacetate (TAC) films (TAC−X) were systematically evaluated. The results show that CNCs can be well dispersed in hydrophobic organic solvents and TAC matrices through the sol‐gel process. TAC−X film has excellent optical properties, its light transmittance is above 92 %, its haze value and birefringence are low, ranging from 0.21±0.01 % to 0.38±0.02 %, and (1.64±0.26)×10−6 to (2.49±0.50)×10−6 respectively. When doped with 2 wt % CNCs, the tensile strength and Young's modulus of the TAC‐2 film were 33.0 % and 30.1 % higher than those of the pure TAC film, separately. At the same time, the TAC−X film also maintains good thermal stability, with its glass transition temperature and maximum decomposition temperature falling between 215–216 °C and 366–368 °C respectively. The simple sol‐gel process provides a convenient and efficient way to use CNCs doping to enhance the physical and mechanical properties of TAC optical films.

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Section: Resultsmentioning

confidence: 99%

Section: Ftir and Xrd Patterns Of The Filmmentioning

confidence: 99%

Preparation and Characterization of Cellulose Nanocrystal‐Doped Cellulose Triacetate Optical Films by Sol‐Gel Process

Zhou,

Tang,

Zhang

et al. 2024

ChemistrySelect

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“…The endothermic transition at 305.63°C was attributed to the melting of cellulose, which corresponded to the breaking of glycosidic linkages and the depolymerization of cellulose. 36,41,43 Moreover, the thermal transitions in this temperature range are connected with the initiation of thermal degradation of cellulose, which consists of the rearrangement of molecular chains, followed by the breaking of glucosidic bonds along molecular chains and intermolecular cross-linking. 36,44…”

Section: Differential Scanning Calorimetry Analysismentioning

confidence: 99%

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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Synthesis and Characterization of Cellulose Acetate from Kombucha SCOBY Bacterial Cellulose Using Different Acetylating Agents

Swain,

Prabhakar,

Das

et al. 2024

Springer Proceedings in Materials

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A novel eco-friendly source of cellulose acetate extracted from Astragalus gombo seeds: thermal, structural, and morphological characterization

Cited by 4 publications

References 44 publications

Preparation and Characterization of Cellulose Nanocrystal‐Doped Cellulose Triacetate Optical Films by Sol‐Gel Process

Preparation and Characterization of Cellulose Nanocrystal‐Doped Cellulose Triacetate Optical Films by Sol‐Gel Process

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

Synthesis and Characterization of Cellulose Acetate from Kombucha SCOBY Bacterial Cellulose Using Different Acetylating Agents

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