Application of Synchronous Fluorescence Spectrometry in Separation of Aromatics from Hydrotreated Naphthenic Oil

Han, Sheng; Cheng, Xu; Ma, Shujie; Ren, Tianhui

doi:10.1081/lft-200041205

Cited by 8 publications

(3 citation statements)

References 9 publications

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“…In which, AO consists of unsaturated, polycyclic aromatic compounds, it can be best compatible with natural and synthetic rubber. However, AO has potential carcinogenicity and is strictly prohibited in many products . PO consists of straight and branched‐chain saturated aliphatic hydrocarbon, which is similar with the linear structure of EB block in SEBS, the good miscibility between PO and SEBS was reported before.…”

Section: Introductionmentioning

confidence: 70%

“…In other words, all the SEBS/PP/oil blends melt exhibited shear thinning behavior. This could be attributed to the unwrapping of the entanglements of polymer molecular chains and orientation under shear stress . This is the typical rheological behavior of pseudoplastic fluid.…”

Section: Resultsmentioning

confidence: 95%

“…PO consists of straight and branched‐chain saturated aliphatic hydrocarbon, which is similar with the linear structure of EB block in SEBS, the good miscibility between PO and SEBS was reported before. In comparison, NO consists of saturated cycloparaffin, which is structural similar with PS blocks in SEBS, this aroused our interest to study whether a certain interaction between NO and PS phase exists or not.…”

Section: Introductionmentioning

confidence: 99%

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Influence of extender oil composition on flowing property, thermal stability, and morphology of styrene‐b‐ethylene‐co‐butylene‐b‐styrene copolymer/polypropylene/oil blends

Zhen

Xie

et al. 2019

Polymers for Advanced Techs

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In this study, a series of styrene-b-ethylene-co-butylene-b-styrene copolymer (SEBS)/polypropylene (PP)/oil blends with different kinds of oil composition was developed through melt blending. The effect of oil with different composition and properties on its phase equilibrium and "redistribution" in multiphasic SEBS elastomer was systematically studied for the first time. Moreover, an integral influencing mechanism of oil composition on the structure and properties of SEBS/PP/oil blends was also put forward. The mineral oil was mainly distributed in ethylene/butylene (EB)/PP phase, which greatly enhanced the processing flowability of SEBS/PP/oil blends. With increasing oil C N content, a redistribution of oil appeared and excess naphthenic oil (NO) entered the interphase of soft and hard phases. The dynamic mechanical thermal analysis (DMTA) analysis indicated that the polystyrene (PS) phase was plasticized, which also helped to improve the processing fluidity of blends. However, the plasticizing of physical cross-linking point PS resulted in a decrease in mechanical strength and thermal stability. Small-angle X-ray scattering (SAXS) and transmission electron microscope (TEM) results showed that PS phase (45 nm to 55 nm) cylindrically distributed in EB/PP/oil matrix, the excess NO in the interphase enlarged the distance between PS phase and widen the escape channel for oil migration. At over 45% oil C N content, the electron density difference between soft and hard phases reduced to the minimum, same as T gPS , indicating a deeper plasticizing effect. The PS phase swelled and exhibited elastic behavior; thus, the force could be uniformly transferred between two phases. Importantly, a recover in strength and thermal stability was observed in O-5 blend.This work significantly filled the gap of studies in oil-extended thermoplastic elastomers (TPEs), exhibiting great theoretical guiding significance and application value.

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Section: Introductionmentioning

confidence: 70%

Section: Resultsmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Influence of extender oil composition on flowing property, thermal stability, and morphology of styrene‐b‐ethylene‐co‐butylene‐b‐styrene copolymer/polypropylene/oil blends

Zhen

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et al. 2019

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Products of biotransformation of polycyclic aromatic hydrocarbons in fishes of the Athabasca/Slave river system, Canada

Ohiozebau

Tendler

Hill

et al. 2015

Environ Geochem Health

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Concentrations of products of biotransformation of polycyclic aromatic hydrocarbons (PBPAH) were measured in bile of five fishes of nutritional, cultural and ecological relevance from the Athabasca/Slave river system. Samples were collected in Alberta and the Northwest Territories, Canada, during three seasons. As a measure of concentrations of PBPAHs to which fishes are exposed and to gain information on the nature and extent of potential exposures of people or piscivorous wildlife, concentrations of biotransformation products of two- and three-ringed, four-ringed and five-ringed PAHs were measured using synchronous fluorescence spectroscopy. Spatial and seasonal differences were observed with greater concentrations of PBPAHs in samples of bile of fish collected from Fort McKay as well as greater concentrations of PBPAHs in bile of fish collected during summer compared to those collected in other seasons. Overall, PBPAHs were greater in fishes of lower trophic levels and fishes more closely associated with sediments. In particular, goldeye (Hiodon alosoides), consistently contained greater concentrations of all the PBPAHs studied.

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Assessment of organic pollution of an industrial river by synchronous fluorescence and UV–vis spectroscopy: the Fensch River (NE France)

Assaad

Pontvianne

Pons

2017

Environ Monit Assess

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To rapidly monitor the surface water quality in terms of organic pollution of an industrial river undergoing restoration, optical methods (UV-visible spectrometry and fluorescence) were applied in parallel to classical physical-chemical analyses. UV-visible spectra were analyzed using the maximum of the second derivative at 225 nm (related to nitrates), specific absorbance at 254 nm (SUVA), and the spectral slope between 275 and 295 nm (S ) (related to the aromaticity and molecular weight of dissolved organic carbon). The synchronous fluorescence spectra (wavelength difference = 50 nm) exhibited a high variability in the composition of dissolved organic material between the upstream and downstream sections and also versus time. The principal components analysis of the entire set of synchronous fluorescence spectra helped to define three river sections with different pollution characteristics. Spectral decomposition was applied to the two most upstream sections: five fluorophores, classical in rivers impacted by domestic sewage and related to protein-like (λ = 280 nm) and humic-like fluorescence (M-type with λ ≈ 305-310 nm and C-type with λ ≥ 335 nm), were identified. The irregular shape of the synchronous fluorescence spectra in the most downstream section is likely due to organic pollutants of industrial origin; however, their variability and the complexity of the spectra did not allow the further elucidation of their nature.

show abstract

Application of Synchronous Fluorescence Spectrometry in Separation of Aromatics from Hydrotreated Naphthenic Oil

Cited by 8 publications

References 9 publications

Influence of extender oil composition on flowing property, thermal stability, and morphology of styrene‐b‐ethylene‐co‐butylene‐b‐styrene copolymer/polypropylene/oil blends

Influence of extender oil composition on flowing property, thermal stability, and morphology of styrene‐b‐ethylene‐co‐butylene‐b‐styrene copolymer/polypropylene/oil blends

Products of biotransformation of polycyclic aromatic hydrocarbons in fishes of the Athabasca/Slave river system, Canada

Assessment of organic pollution of an industrial river by synchronous fluorescence and UV–vis spectroscopy: the Fensch River (NE France)

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