Characterization of the complexing agents’ influence on bioscouring cotton fabrics by FT-IR and TG/DTG/DTA analysis

Dochia, Mihaela; Chambré, Dorina; Gavrilaș, Simona; Moisă, Cristian

doi:10.1007/s10973-018-7089-y

Cited by 9 publications

(13 citation statements)

References 30 publications

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“…Furthermore, the main characteristic absorption peaks of cotton cellulose were also observed using ATR FT-IR spectroscopy. Specifically, a broad band at 3408 cm −1 could be assigned to the free OH stretching vibration; absorption peaks at 1430 cm −1 and 1340 cm −1 could be assigned to the CH 2 scissoring motion and C-H bending, respectively; and the bands at 1178 and 1049 cm −1 were dominated by C-O-C bond vibration and in-plane ring stretching, respectively [ 48 , 49 ]. A peak around 1640 cm −1 was due to the adsorbed water molecules [ 46 ].…”

Section: Resultsmentioning

confidence: 99%

Energy-Saving One-Step Pre-Treatment Using an Activated Sodium Percarbonate System and Its Bleaching Mechanism for Cotton Fabric

Yan

et al. 2022

Materials

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The traditional pre-treatment of cotton fabric hardly meets the requirement of low carbon emissions due to its large energy consumption and wastewater discharge. In this study, a low-temperature and near-neutral strategy was designed by establishing a tetraacetylethylenediamine (TAED)-activated sodium percarbonate (SPC) system. First, the effects of SPC concentration, temperature and duration on the whiteness index (WI) and capillary effect of cotton fabrics were investigated. Particularly, excess SPC’s ability to create an additional bleaching effect was studied. The optimized activated pre-treatment was compared with the traditional pre-treatment in terms of the bleaching effect and energy consumption. Further, the degradation of morin, which is one of the natural pigments in cotton, was carried out in a homogeneous TAED/SPC system to reveal the bleaching mechanism. Lastly, the application performance of the treated cotton was evaluated by characterizing the dyeability, mechanical properties, morphology, etc. The research results showed that temperature had a significant influence on both the WI and capillary effect, followed by the SPC concentration and duration. The WI was positively correlated with the SPC concentration, but excess SPC could not produce an obvious additional effect. The WI of the fabric increased by 67.6% after the optimized activated bleaching using 10 mmol/L SPC and 15 mmol/L TAED at 70 °C for 30 min. Compared with the traditional process performed at 95 °C for 45 min, the activated process produced approximately 39.3% energy savings. Research on the bleaching mechanism indicated that the reactive species that participated in degrading the morin were the hydroxyl radical and superoxide radical, and the contribution degree of the former was larger than that of the latter. Two degradation components with molecular weights of 180 and 154 were detected using mass spectroscopy. Based on this, the bleaching mechanism of the TAED/SPC system was proposed. Moreover, the fabric after the activated pre-treatment had a suitable dyeability and strength, a lower wax residual and a smoother and cleaner fiber surface. The encouraging results showed that TAED/SPC is a promising bleaching system that is conducive to the sustainable advance of the textile industry.

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Section: Resultsmentioning

confidence: 99%

Energy-Saving One-Step Pre-Treatment Using an Activated Sodium Percarbonate System and Its Bleaching Mechanism for Cotton Fabric

Yan

et al. 2022

Materials

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“…Cotton fiber is usually characterized by several absorption bands. In the spectrum of the cotton-OH sample, a large absorption band at 3600–3000 cm −1 can be attributed to the free OH stretching vibration, as well as to intra- and intermolecular hydrogen bonds associated with the chemical structure of cellulose [ 23 ]. Near this region, in the range 3000–2800 cm −1 , there are several narrow bands related to the stretching vibrations of the methylene and methine groups.…”

Section: Resultsmentioning

confidence: 99%

Design, Structural Characteristic and Antibacterial Performance of Silver-Containing Cotton Fiber Nanocomposite

et al. 2022

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In the present study, cotton fiber was treated with phosphorus trichloride in the presence of oxygen. As a result of the subsequent hydrolysis of modified cotton fibers, phosphorus-containing fragments with acidic groups and chlorine atoms were introduced onto their surface. Afterward, silver-containing composites based on raw and modified cotton fibers were prepared using the chemical reduction method. The obtained samples were characterized in detail by Fourier transform infrared spectroscopy, ultraviolet–visible spectroscopy, X-ray powder diffraction, as well as by thermogravimetric analysis, scanning electron microscopy, and energy-dispersive X-ray analysis. A comparative bioassay experiment of four samples for gram-negative (Escherichia coli) bacteria, gram-positive (Staphylococcus aureus) bacteria, and the fungus Candida albicans was carried out. These results showed the predominant antibacterial activity of the phosphorylated sample and the composite based on it. Thus, the development of these antibacterial cotton fibers using readily available reagents under relatively mild conditions could be used as potential industrial applications for the production of everyday medical textiles.

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“…The content of the material has been reduced from 93.5% to 73.9%. The DTG curve at this stage is constantly increasing, indicating that the rate of material weight loss is also increasing (Dochia et al 2018;Guo et al 2019).…”

Section: Behavior During Combustion Of Cons Tga and Dtg Analysismentioning

confidence: 91%

Reuse of Cornus officinalis nutlet for bioenergy

Yue

Lam

et al. 2022

BioRes

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As a traditional nourishing Chinese herbal medicine, Cornus officinalis Sieb. et Zucc. has a long history of application. At present, only the flesh of the fruit of Cornus officinalis is used as a medicine, which wastes a large quantity of ingredients in the nutlet. To improve the comprehensive utilization efficiency of the fruit’s nutlet, which could be used when there is a shortage of the plant’s fruit in the market, this study used Fourier transform-infrared spectroscopy (FT-IR), gas chromatography-mass spectrometry (GC-MS), thermogravimetric (TG) analysis, pyrolysis-gas chromatography-mass spectrometry (PY-GC-MS), and nuclear magnetic resonance (NMR) techniques to analyze the Cornus officinalis nutlet. The results showed that the active ingredients of Cornus officinalis nutlet have great medicinal value and could become a substitute for the fruit. After extracting the active ingredients, the residue can be used as a good biomass liquid fuel, providing reference for the future to replace fossil fuels. This study provides the scientific basis for the comprehensive utilization of high-quality resources for Cornus officinalis.

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Characterization of the complexing agents’ influence on bioscouring cotton fabrics by FT-IR and TG/DTG/DTA analysis

Cited by 9 publications

References 30 publications

Energy-Saving One-Step Pre-Treatment Using an Activated Sodium Percarbonate System and Its Bleaching Mechanism for Cotton Fabric

Energy-Saving One-Step Pre-Treatment Using an Activated Sodium Percarbonate System and Its Bleaching Mechanism for Cotton Fabric

Design, Structural Characteristic and Antibacterial Performance of Silver-Containing Cotton Fiber Nanocomposite

Reuse of Cornus officinalis nutlet for bioenergy

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