Study on the preparation and flame retardant properties of an eco-friendly potassium-calcium carrageenan fiber

Zhang, Quanyi; Zhang, Weiwei; Geng, Cunzhen; Xue, Zhixin; Xia, Yanzhi; Qin, Yimin; Zhang, Guofang

doi:10.1016/j.carbpol.2018.10.058

Cited by 25 publications

(15 citation statements)

References 22 publications

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“…Carrageenan is a water-soluble anionic polysaccharide extracted from red algae, which has a large number of hydroxyl and sulfate groups on its molecular chain [22,23]. The negatively charged carrageenan attracts positively charged silver ions by electrostatic attraction, which facilitates the reduction of Ag ions by hydroxyl groups on the molecular chain [24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Facile and Green Fabrication of Carrageenan-Silver Nanoparticles for Colorimetric Determination of Cu2+ and S2−

et al. 2020

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In the present work, silver nanoparticles (AgNPs) were prepared by a simple and green method using carrageenan as reducing and capping agent. The as-synthesized carrageenan-AgNPs was demonstrated as an effective duel colorimetric sensing for selective and sensitive recognition of Cu2+ and S2−, which could be used to detect these ions with naked eyes. In addition, the possible sensing mechanism was that Cu2+ ions caused serious aggregation of carrageenan-AgNPs, which led to the color change of carrageenan-AgNPs. AgNPs were etched by S2− forming Ag2S, which played an important role in the determination of S2− ions. Furthermore, it has been successfully applied to the determination of Cu2+ and S2− in tap water and lake water, showing its great potential for the analysis of environmental water samples.

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Section: Introductionmentioning

confidence: 99%

Facile and Green Fabrication of Carrageenan-Silver Nanoparticles for Colorimetric Determination of Cu2+ and S2−

et al. 2020

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“…Notably, the amount of the residual layer formed in the final stage was similar. 21 These results strongly suggest that Fibers A has a more stable structure, which can also explain why the tensile strength of the Fibers A was higher than Fibers B.…”

Section: Introductionmentioning

confidence: 69%

“…The parameters and the strength data are shown in Table . Because of the different diameters of Fibers A and Fibers B, linear intensity was the only reliable indicator of the intensity properties of fibers. , The relationship between linear intensity, breaking force, and linear density is as follows …”

Section: Resultsmentioning

confidence: 99%

“…The third stage of Fibers A and Fibers B was located in the range of 184–1000 and 173–1000 °C, with the quality of residues being 34.8 and 36.4%. Notably, the amount of the residual layer formed in the final stage was similar . These results strongly suggest that Fibers A has a more stable structure, which can also explain why the tensile strength of the Fibers A was higher than Fibers B.…”

Section: Resultsmentioning

confidence: 99%

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Comparison of Two Different Preparation Methods of Wet-Spun Carrageenan Fibers Directly from Chondrus Extractions

Dong

Han

et al. 2020

ACS Omega

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In order to improve the characters of carrageenan fibers, two different process methods were presented in this study. Dopes prepared directly from Chondrus extraction by Route Aadding NaOH after Chondrus extractionor Route Busing NaOH solution to extract Chondrus and carrageenan fibers (Fibers A and Fibers B)were obtained using the wet spinning process using barium chloride as the coagulant at room temperature. The properties of dopes were studied by dynamic light scattering and gel permeation chromatography. The properties of Fibers A and Fibers B were comprehensively studied by Fourier transform infrared, thermal analysis, scanning electron microcopy, and tensile testing. The results showed that carrageenan with a larger molecule weight in Dope A and Fibers A showed higher intensity, better morphology, and stable thermal properties.

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“…Moreover, could influence fire retardant performance and thermal stability of cotton fabrics. [17][18][19][20][21][22] These metal ions may modify the fibers' thermal decomposition process, allowing for more char to form and the release of nonflammable compounds. Some metal ions have excellent smoke stagnation properties [23] and antibacterial properties.…”

Section: Introductionmentioning

confidence: 99%

Effective enhancement of intumescent flame retardant coating by coordinating manganese ions on cotton fabrics

Wang

2022

Vinyl Additive Technology

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The intumescent flame retardant coating consisting of polyethylenimine (PEI) and poly sodium phosphate has various drawbacks including poor water durability, inferior flame retardancy, and large consumption of nonrenewable raw resources. An intumescent fire retardant coating coordinating with manganese ions was designed onto the cotton fabrics surface by a layer-by-layer assembly method to solve these concerns. Energy dispersive spectroscopy revealed that the coating included well-distributed manganese ions. The thermogravimetric measurement showed that after adding manganese ions into the coating, the decomposition of treated fabrics shifted towards a lower temperature and more char residues were formed due to the catalytic effect of manganese ions.Coated cotton fabrics with manganese ions yielded the most reduction in peak heat release rate and the highest rise in char residues, up to 69.1% and 34.7%, respectively, in microscale combustion calorimeter results. Limiting oxygen index (LOI) of the samples with manganese ions was the highest, up to 28.3% and the char layer was more intact and continuous after vertical combustion test. Scanning electron microscopy analyses showed that treated cotton fabrics with manganese ions had more bubbles and char residues on the fiber surface.These findings indicated that manganese ions coordination was responsible for the catalytic and synergistic effects. Furthermore, the coating containing manganese ions exhibited better water endurance owing to high-LOI values even after rinsing. This work shows manganese ions into intumescent flame retardant coatings improves cotton fabrics flame retardancy and water resistance.

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Study on the preparation and flame retardant properties of an eco-friendly potassium-calcium carrageenan fiber

Cited by 25 publications

References 22 publications

Facile and Green Fabrication of Carrageenan-Silver Nanoparticles for Colorimetric Determination of Cu2+ and S2−

Facile and Green Fabrication of Carrageenan-Silver Nanoparticles for Colorimetric Determination of Cu2+ and S2−

Comparison of Two Different Preparation Methods of Wet-Spun Carrageenan Fibers Directly from Chondrus Extractions

Effective enhancement of intumescent flame retardant coating by coordinating manganese ions on cotton fabrics

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