Characterization of pyrolysis products formed from styrene-1,2-unit heterosequence of styrene–butadiene copolymer

Choi, Sung‐Seen; Kwon, Hyuk-Min

doi:10.1016/j.jaap.2012.11.014

Cited by 17 publications

(5 citation statements)

References 25 publications

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“…This can lead to a higher temperature applied to the small sample rather than the large one. In general, the production rate of a monomer is faster than that of a dimer as the pyrolysis temperature increases [ 55 , 56 , 57 , 58 ]. A calibration curve built with the reference samples is used to determine the TWP contents in environmental samples, as introduced previously.…”

Section: Resultsmentioning

confidence: 99%

Variation in Abundance Ratio of Isoprene and Dipentene Produced from Wear Particles Composed of Natural Rubber by Pyrolysis Depending on the Particle Size and Thermal Aging

Jung

Choi

2023

Polymers

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Tire wear particles (TWPs) are generated by friction between the road and the tire. TWPs are one of the major microplastics found in environmental samples, such as road dust, particulate matter (PM), and sediment. TWP contents in environmental samples are generally analyzed using the pyrolysis technique. Tire tread compounds of heavy vehicles are usually composed of natural rubber (NR). Isoprene and dipentene are the principal pyrolysis products of NR, and dipentene is employed as the key marker for the determination of the TWP contents. In this study, an NR abrasion specimen was thermally aged, and an abrasion test was performed to obtain the wear particles. The influence of the wear particle size and thermal aging on the pyrolysis behavior of NR was investigated. The isoprene/dipentene ratio exponentially increased as the wear particle size decreased, and it was also increased by the thermal aging of the abrasion specimen. The increased isoprene/dipentene ratio by thermal aging was explained by increasing the crosslink density. Using the relationship between the wear particle size and the isoprene/dipentene ratio, it is possible to estimate the isoprene/dipentene ratio for very small TWP such as PM. The experimental results concluded that the wear particle size and thermal aging affect the formation of the key pyrogenic products, and the influencing factors should be considered for the quantification of TWP contents in the environmental samples.

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Section: Resultsmentioning

confidence: 99%

Variation in Abundance Ratio of Isoprene and Dipentene Produced from Wear Particles Composed of Natural Rubber by Pyrolysis Depending on the Particle Size and Thermal Aging

Jung

Choi

2023

Polymers

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“…Styrene was detected, but VCH was rarely observed. If there was SBR component in the PM 2.5 samples, besides styrene and VCH, 2-phenylpropene (2-PP), 3-phenylcyclopentene (3-PCP), and/or 4-phenylcyclohexene (4-PCH) should be detected because they are generated from the styrene-butadiene heterosequences [ 23 , 40 , 41 ]. However, 2-PP, 3-PCP, and 4-PCH were not detected.…”

Section: Resultsmentioning

confidence: 99%

Comparison of polymeric components and tire wear particle contents in particulate matter collected at bus stop and college campus

Chae

Choi

2023

Heliyon

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“…This indicates that there was no BR component in the PM samples. There are various principal pyrolysis products of SBR, such as 1,3-butadiene, VCH, styrene, 2-phenylpropene (2-PP), 3-phenylcyclopentene (3-PCP), and 4-phenylcyclohexene (4-PCH) [ 39 , 40 , 41 , 42 ]. If there were SBR components in the PM samples, some of them must have been detected.…”

Section: Resultsmentioning

confidence: 99%

Analysis of Polymeric Components in Particulate Matter Using Pyrolysis-Gas Chromatography/Mass Spectrometry

Chae

Choi

2022

Polymers

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Particulate matters (PMs) such as PM10 and PM2.5 were collected at a bus stop and were analyzed using pyrolysis-gas chromatography/mass spectrometry to identify organic polymeric materials in them. The major pyrolysis products of the PM samples were isoprene, toluene, styrene, dipentene, and 1-alkenes. The pyrolysis products generated from the PM samples were identified using reference polymeric samples such as common rubbers (natural rubber, butadiene rubber, and styrene-butadiene rubber), common plastics (polyethylene, polypropylene, polystyrene, and poly(ethylene terephthalate)), plant-related components (bark, wood, and leaf), and bitumen. The major sources of the principal polymeric materials in the PM samples were found to be the abrasion of the tire tread and asphalt pavement, plant-related components, and lint from polyester fabric. The particles produced by the abrasion of the tire tread and asphalt pavement on the road were non-exhaustive sources, while the plant-related components and lint from polyester fabric were inflowed from the outside.

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Characterization of pyrolysis products formed from styrene-1,2-unit heterosequence of styrene–butadiene copolymer

Cited by 17 publications

References 25 publications

Variation in Abundance Ratio of Isoprene and Dipentene Produced from Wear Particles Composed of Natural Rubber by Pyrolysis Depending on the Particle Size and Thermal Aging

Variation in Abundance Ratio of Isoprene and Dipentene Produced from Wear Particles Composed of Natural Rubber by Pyrolysis Depending on the Particle Size and Thermal Aging

Comparison of polymeric components and tire wear particle contents in particulate matter collected at bus stop and college campus

Analysis of Polymeric Components in Particulate Matter Using Pyrolysis-Gas Chromatography/Mass Spectrometry

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