Extraction and characterization of cellulose microfibers from Retama raetam stems

Khenblouche, Abdelkader; Bechki, Djamel; Gouamid, Messaoud; Charradi, Khaled; Ladjel, Segni; Hadjadj, Mohamed; Boughali, Slimane

doi:10.1590/0104-1428.05218

Cited by 90 publications

(48 citation statements)

References 51 publications

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“…The integument and kernel of mango seeds presented different morphologies and were successfully separated after milling and sieving. Cellulose is present in the plant cell wall and can be extracted from different plants [ 43 ] which, usually present a cellulose fiber network while a starch‐rich material would be a more homogeneous/gelatinized aspect. [ 44 ]…”

Section: Resultsmentioning

confidence: 99%

Biocomposites of PLA and Mango Seed Waste: Potential Material for Food Packaging and a Technological Alternative to Reduce Environmental Impact

et al. 2021

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Mango seeds from agro‐industry represents an environmental problem due to the amounts of by‐products produced. Conversely, poly (lactic acid) (PLA) is a potential green alternative to conventional plastics. The goal of this study aimed to develop a biocomposite based on PLA and mango’s by‐product for rigid packaging. Six biocomposites are obtained by extrusion/injection processing using formulations with PLA as a matrix and up to 20% by weight of mango seed’s by‐products. The materials are characterized by chemical and physical analysis; scanning electron microscopy/energy dispersive X‐ray, X‐ray diffraction; Fourier transform infrared spectroscopy (FTIR); thermal gravimetric analysis/differential thermogravimetry; differential scanning calorimetry (DSC), and mechanical analysis. FTIR bands and DSC transitions related to starch are higher in the kernel, while more cellulose bands are found in the integument. Kernel presented thermal degradation in the biocomposites, the sample PLA+20 wt% kernel. For the other compositions, it is possible to observe that they could keep their morphology. Significant improvements in both mechanical and barrier properties are found in the formulation with 20 wt% integument (up to 38% in elastic modulus). Therefore, this study suggests that biocomposites developed from PLA / Integument / Kernel have potential as a new biomaterial for rigid food packaging systems.

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Section: Resultsmentioning

confidence: 99%

Biocomposites of PLA and Mango Seed Waste: Potential Material for Food Packaging and a Technological Alternative to Reduce Environmental Impact

et al. 2021

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“…Still, there are two shoulders at 230 and 255 °C associated with hemicellulose depolymerization. The main peak at 324.4 °C and a smaller one between 369.4 and 560.6 °C correspond to cellulose and lignin decomposition and degradation, respectively [63]. Table 2 shows thermal degradation data of the nanohybrids, graphite weight, and organic molecules grafted onto the nanohybrids.…”

Section: Polymers 2021 13 X For Peer Review 7 Of 15mentioning

confidence: 99%

Covalent Functionalization of Graphene Oxide with Fructose, Starch, and Micro-Cellulose by Sonochemistry

et al. 2021

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In this work, we report the synthesis of graphene oxide (GO) nanohybrids with starch, fructose, and micro-cellulose molecules by sonication in an aqueous medium at 90 °C and a short reaction time (30 min). The final product was washed with solvents to extract the nanohybrids and separate them from the organic molecules not grafted onto the GO surface. Nanohybrids were chemically characterized by Fourier-transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), and Raman spectroscopy and analyzed by thermogravimetric analysis (TGA), scanning electron microscopy (SEM), and X-ray diffraction (XRD). These results indicate that the ultrasound energy promoted a chemical reaction between GO and the organic molecules in a short time (30 min). The chemical characterization of these nanohybrids confirms their covalent bond, obtaining a grafting percentage above 40% the weight in these nanohybrids. This hybridization creates nanometric and millimetric nanohybrid particles. In addition, the grafted organic molecules can be crystallized on GO films. Interference in the ultrasound waves of starch hybrids is due to the increase in viscosity, leading to a partial hybridization of GO with starch.

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“…Cellulose fibers have an inherent structural hierarchy that originates from their different biological sources. Obtaining cellulose from different lignocellulosic fibers has attracted the interest of the scientific and industrial community in recent years [24,25] . The native fibers are longitudinal, rigid and difficult to modify due to the components that form them.…”

Section: Introductionmentioning

confidence: 99%

Isolation and characterization of micro cellulose obtained from waste mango

Lorenzo-Santiago

Rendón‐Villalobos

2020

Polímeros

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Extraction and characterization of cellulose microfibers from Retama raetam stems

Cited by 90 publications

References 51 publications

Biocomposites of PLA and Mango Seed Waste: Potential Material for Food Packaging and a Technological Alternative to Reduce Environmental Impact

Biocomposites of PLA and Mango Seed Waste: Potential Material for Food Packaging and a Technological Alternative to Reduce Environmental Impact

Covalent Functionalization of Graphene Oxide with Fructose, Starch, and Micro-Cellulose by Sonochemistry

Isolation and characterization of micro cellulose obtained from waste mango

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