Molecular structure and vibrational spectra of 2,2′,4,4′,6-pentabromodiphenyl ether (BDE 100)

Chruszcz‐Lipska, Katarzyna; Trzewik, Bartosz; Winid, B.

doi:10.1016/j.saa.2017.03.049

Cited by 3 publications

(5 citation statements)

References 93 publications

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“…This ba is accountable for the strength of the molecule and is the most dominant band within t FTIR spectrum of DBDE. Figure 3b illustrates the gradual decline of a weak band, wit maximum around 615 cm −1 , which corresponds to the aromatic C-Br band of DBDE [27 Based on the findings presented in Figure 3, increasing the EB doses causes a sign icant decline in the intensity of the specified vibrational bands. This indicates the deg dation of the DBDE molecule and the elimination of bromine from the polymer film.…”

Section: Polycarbonate-decabromodiphenylethermentioning

confidence: 73%

See 1 more Smart Citation

Electron Beam Processing as a Promising Tool to Decontaminate Polymers Containing Brominated Flame Retardants

Benmammar,

Mundlapati,

Bouberka

et al. 2023

Molecules

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Electron Beam (EB) irradiation was utilized to decontaminate model systems of industrial polymers that contain a brominated flame retardant (BFR). Acrylonitrile-butadiene-styrene (ABS) and Polycarbonate (PC) are two types of polymers commonly found in Waste Electrical and Electronic Equipment (WEEE). In this study, these polymers were exposed to EB irradiation to degrade DecaBromoDiphenylEther (DBDE), one of the most toxic BFRs. Fourier-transform infrared spectroscopy analysis demonstrated an 87% degradation rate of DBDE for the ABS-DBDE system and 91% for the PC-DBDE system following an 1800 kGy irradiation dose. Thermal analysis using Differential Scanning Calorimetry revealed the presence of crosslinking in ABS and a minor reduction in the glass transition temperature of PC after EB processing. Polymers exhibited thermal stability after photolysis, as indicated by thermogravimetric analysis. In summary, EB irradiation had no impact on the overall thermal properties of both polymers. High-resolution mass spectrometry analysis has confirmed the debromination of both ABS-DBDE and PC-DBDE systems. Therefore, the results obtained are promising and could offer an alternative approach for removing bromine and other additives from plastic E-waste.

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Section: Polycarbonate-decabromodiphenylethermentioning

confidence: 73%

“…This band is accountable for the strength of the molecule and is the most dominant band within the FTIR spectrum of DBDE. Figure 3b illustrates the gradual decline of a weak band, with a maximum around 615 cm −1 , which corresponds to the aromatic C-Br band of DBDE [27].…”

Section: Polycarbonate-decabromodiphenylethermentioning

confidence: 99%

Electron Beam Processing as a Promising Tool to Decontaminate Polymers Containing Brominated Flame Retardants

Benmammar,

Mundlapati,

Bouberka

et al. 2023

Molecules

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“…Their parameters agree with results obtained by previous study. 21,48,49 large quantities of Al-oxide bonds are formed in the coated structure, as there is a large peak at 925 cm −1 . The source of oxygen atom should not be from ether molecules, because the molecule did not disintegrate during the adsorbing process.…”

Section: Characterization Of Coated Anpsmentioning

confidence: 98%

“…FTIR analysis of ether-coated Al nanopowders.the adsorbing peak at 1261 cm −1 48. Besides, adsorbing peaks in the range between 2850 and 2921 cm −1 are led by the stretching vibrations of C-H as well 49. According to the ReaxFF-based MD simulations results, it seems that whole structures of ether molecule are not broken up after being adsorbed.…”

mentioning

confidence: 95%

Adsorption behaviors of ether and aluminum surface: A molecular dynamics study

Liu

Sun

2019

Int. J. Mod. Phys. B

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As a pre-study for ether-coated aluminum (Al) nanoparticles (ANPs), ReaxFF or reactive force field-based Molecular Dynamic (MD) Simulations are performed to uncover the mechanism of adsorption behaviors between the Aluminum surface and ether molecules. Meanwhile, part of the results has been verified by experiments. In this study, three different models have been employed with varying concentrations of ether molecules. The obtained results indicate that the adsorption of the ether molecule could be divided into four stages and each stage is associated with charge transfer between Hydrogen and Aluminum atoms. After that, adsorbed ether molecules keep a horizontal state above the Aluminum surface with a vacuum. By evaluating variable temperature conditions, it is concluded that the room-temperature is suitable for forming the ether coating on Aluminum surface. Besides, a higher ether concentration could also bring beneficial effects relating to adsorbing rates. While the disassociated ether solution is removed, it seems that some adsorbed ether molecules will be desorbed, which is similar to the volatilization effect in the filtering experiment. Finally, simulations for desorption show that 455 (K) is a critical point for the adsorbed ether layer.

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“…Insert Figure 1 here Insert Figure 2 here Figure presents the FTIR spectra of DBDE and ABS in the wavenumber range between 480 and 1000cm -1 . Some absorbance bands of ABS and DBDE appear rather close, such as the bands at 966cm -1 (C-H in trans-butadiene part of ABS [30]) and 960cm -1 (C-Br [29] in DBDE); 765cm -1 (CH 2 in vinyl-butadiene and styrene part of ABS [28]) and 761cm -1 (C-C ring [31] in DBDE); and 699cm -1 (C-C ring [32]) and 708cm -1 (C-C ring [31] in DBDE), respectively. In ABS/DBDE mixtures these overlapping bands cannot be used to follow the effects of photolysis.…”

Section: Spectroscopic Observations Of the Photolysis Of Abs/dbdementioning

confidence: 99%

Photodegradation of Decabromo Diphenyl Ether Flame Retardant in Poly (Acrylonitrile Butadiene Styrene) (ABS)

Aldoori

Bouberka

Nadim

et al. 2020

Journal of Macromolecular Science, Part B

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Decabromodiphenylether (DBDE) is a brominated flame retardant which belongs to the group of polybromodiphenylethers (PBDEs) often used as a fire resistant additive in various well known polymeric systems like polystyrene, poly(acrylonitrile-butadiene-styrene) (ABS), polypropylene, etc. This compound can be considered as a persistent organic pollutant and presents certain risks for the environment owing to the fact that it is bioaccumulable and not biodegradable. A detailed investigation, described here, was carried out on the effect of ultraviolet/visible radiation on DBDE in ABS with the aim to study the photolytic reactions of this molecule in the solid state, in order to improve the economic and ecological treatment of brominated plastic waste from waste electrical and electronic equipment (WEEE). This study presents new aspects of the photochemical degradation of DBDE/ABS systems in the solid state. The photodegradation of DBDE in ABS was followed by Fourier transform infrared spectroscopy (FTIR) as well as by thermogravimetrical analysis (TGA). Good agreement was obtained for the results of both analytical methods in terms of the overall photolysis of DBDE.

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Molecular structure and vibrational spectra of 2,2′,4,4′,6-pentabromodiphenyl ether (BDE 100)

Cited by 3 publications

References 93 publications

Electron Beam Processing as a Promising Tool to Decontaminate Polymers Containing Brominated Flame Retardants

Electron Beam Processing as a Promising Tool to Decontaminate Polymers Containing Brominated Flame Retardants

Adsorption behaviors of ether and aluminum surface: A molecular dynamics study

Photodegradation of Decabromo Diphenyl Ether Flame Retardant in Poly (Acrylonitrile Butadiene Styrene) (ABS)

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