Effect of thermal transformation and stability on the flammability of PAN precursors-based carbon fibres

Kerekes, Zsuzsanna; Lublóy, Éva

doi:10.1007/s10973-018-7136-8

Cited by 3 publications

(1 citation statement)

References 12 publications

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“…[1] Various precursors are used to fabricate carbon fibers, e.g. polyacrilonitryle [2][3][4][5] polyacenaphtalene, [6,7] phenol formaldehyde resin, [8][9][10] polyacrylether, [11] polyethylene [12] and cellulose. [13] The synthesis involves carbonization, i.e.…”

Section: Introductionmentioning

confidence: 99%

Carbon Fibers Obtained from Flax and Their Adsorption Performance in the Removal of Cu(II) and Co(II) from Aqueous Solutions

2018

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The systematic studies on oxidation of carbon fibers with nitric acid are presented. The carbon fibers were synthesized from the low‐cost and natural stock (flax fibers) via the controlled carbonization. The non‐oxidized and surface oxidized carbon fibers were thoroughly characterized by means of electron microscopy, FT‐IR spectroscopy, thermogravimetry, point of zero charge determination, Boehm titration and nitrogen adsorption at 77K. The second part of this work was focused on the evaluation of adsorption properties of oxidized carbon fibers and their potential in the removal of copper(II) and cobalt(II) ions from aqueous solutions. The obtained results bring a conclusion that the concentration of nitric acid is a key parameter which drives the content of oxygen surface groups, thermal stability and adsorption performance of carbon fibers. The obtained oxidized carbon fibers were found to be prospective adsorbents of CuII and CoII from aqueous solutions.

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Section: Introductionmentioning

confidence: 99%

Carbon Fibers Obtained from Flax and Their Adsorption Performance in the Removal of Cu(II) and Co(II) from Aqueous Solutions

2018

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Microstructural characterization of cement-bound materials influenced by the inclusion of Graphene Oxide (GO) – state of the art

Kopecskó

Khaiqani

2022

J. Phys.: Conf. Ser.

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In the last few years, the integration of graphene oxide (GO) into the cementitious matrix has evolved as one of the most well-known inclusion of nanomaterials. The paper addresses the advancement of GO research including the microstructure modifications of GO-modified cement-based materials. The effects of GO were evaluated based on the results of the related researches using different microstructural test methods. The use of GO in scientific disciplines like construction materials technology has made substantial progress. It demonstrates promising outcomes of using GO to develop innovative construction materials. However, further research is needed for future developments.

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The effect of macrostructure and stability on the flammability of non-woven fabrics

Kerekes

Kopecskó

Lublóy

et al. 2020

Journal of Industrial Textiles

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The most flame retardants and non-combustible non-woven fabrics are made of oxidized and carbon fibres due to their strong thermal stability. The burning of non-woven fabrics consists of complex combustion mechanisms: their surface, micro and macrostructures together define their combustion features. By microstructure, we mean oxidized polyacrylicnitrile fibres, which finally constitute the base material of the macrostructure. The macrostructure represents the different forms of the product, in which the material results during production. In this paper, the effect of the macrostructure of non-woven fabrics on flammability has been studied. It has experimentally shown that by defining the oxygen index, we can demonstrate the surface and thickness inhomogeneity, which is invisible or cannot be detected by mechanical tests. A feature of non-combustible non-woven fabrics is that their flammability depends on their thickness and area weight; however, the combustion phenomena of felt fabrics depend primarily on their macrostructure. Different oxygen contents have different combustion phenomena, thus an oxygen index can be assigned to each one. Thermoanalytical test results clearly showed the temperature at which the thermal decomposition of the fibres begins, which gives the surface flame when combusted.

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Effect of thermal transformation and stability on the flammability of PAN precursors-based carbon fibres

Cited by 3 publications

References 12 publications

Carbon Fibers Obtained from Flax and Their Adsorption Performance in the Removal of Cu(II) and Co(II) from Aqueous Solutions

Carbon Fibers Obtained from Flax and Their Adsorption Performance in the Removal of Cu(II) and Co(II) from Aqueous Solutions

Microstructural characterization of cement-bound materials influenced by the inclusion of Graphene Oxide (GO) – state of the art

The effect of macrostructure and stability on the flammability of non-woven fabrics

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