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Nitrogen and phosph...
Nitrogen and phosphorous doped graphene quantum dots : Excellent flame retardants and smoke suppressants for polyacrylonitrile nanocomposites
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- Rahimi-Aghdam, T. (författare)
- Department of Chemistry, Amirkabir University of Technology (Tehran Polytechnic), Tehran, 15875-4413, Iran
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- Shariatinia, Z. (författare)
- Department of Chemistry, Amirkabir University of Technology (Tehran Polytechnic), Tehran, 15875-4413, Iran
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- Hakkarainen, Minna (författare)
- KTH,Polymerteknologi
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- Haddadi-Asl, V. (författare)
- Department of Polymer Engineering and Color Technology, Amirkabir University of Technology (Tehran Polytechnic), Tehran, 15875-4413, Iran
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(creator_code:org_t)
- Elsevier, 2020
- 2020
- Engelska.
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Ingår i: Journal of Hazardous Materials. - : Elsevier. - 0304-3894 .- 1873-3336. ; 381
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Nitrogen (N-GQD) as well as nitrogen and phosphorous co-doped (NP-GQD) graphene quantum dots were demonstrated as novel, low cost, green and highly effective flame retardants and smoke suppressants for polyacrylonitrile (PAN) nanocomposites. The N-GQD and NP-GQD samples were synthesized by hydrothermal method with citric acid as the main reactant. For the first time, the flame retardant and smoke suppressant properties of the NP-GQD were studied. The GQDs were introduced into PAN by solvent blending route. Subsequently, thermal stability, flame retardancy, fire behavior, fire hazard and structure of the residual char were investigated by thermogravimetric analysis (TGA), UL-94 vertical burning test, cone calorimetry, FE-SEM, and Raman spectroscopy. Results showed that both PAN/N-GQD and PAN/NP-GQD nanocomposites had higher flame retardancy and smoke suppressant behavior in addition to lower fire hazard properties than neat PAN. Furthermore, the residual chars for the nanocomposite samples were increased in comparison to the neat PAN. The improvements were even more significant in case of the PAN/NP-GQD due to the synergistic effect of nitrogen and phosphorous. The improvements were mainly ascribed to the ability of the N-GQD and NP-GQD to provide stronger and larger protective char barrier layers, which was even more pronounced in case of the NP-GQD.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Kemiteknik -- Polymerteknologi (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Chemical Engineering -- Polymer Technologies (hsv//eng)
Nyckelord
- Char barrier layer
- Fire hazard
- Flame retardant
- N and P co-doped graphene quantum dot (NP-GQD)
- Polyacrylonitrile (PAN)
- Smoke suppressant
- Fiber- och polymervetenskap
- Fibre and Polymer Science
- Material and Nano Physics
- Material- och nanofysik
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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