Thermal field-flow fractionation and gas chromatography - mass spectrometry in determination of decomposition products of expandable polystyrene after reactions in pressurized hot water and supercritical water

Juhani Kronholm (Corresponding Author), Pertti Vastamäki, Riikka Räsänen, Annukka Ahonen, Kari Hartonen (Corresponding Author), Marja-Liisa Riekkola

Research output: Contribution to journalArticleScientificpeer-review

19 Citations (Scopus)

Abstract

Nonbiodegradable polymers are an environmental concern, and various techniques have been developed to recycle and reuse them. Pressurized hot water, or supercritical water, is an interesting alternative as a reaction medium for depolymerisation, since water is a readily available "green" solvent and its physicochemical properties can be widely adjusted in the vicinity of the critical point. In the present study, various reaction conditions were applied to obtain as high styrene monomer yields as possible in the decomposition of industrial expandable polystyrene (EPS) in a pressurized, high-temperature aqueous medium. Other main reaction products were of interests as well. Thermal field-flow fractionation (ThFFF) was used after the degradation of EPS to check for possible high molar mass products. As a whole, the analytical techniques (GC-MS and ThFFF) employed in the characterization of EPS degradation in a pressurized, high-temperature medium complemented each other well and showed good performance.
Original languageEnglish
Pages (from-to)3029-3035
JournalIndustrial & Engineering Chemistry Research
Volume45
Issue number9
DOIs
Publication statusPublished - 2006
MoE publication typeA1 Journal article-refereed

Fingerprint

Polystyrenes
Fractionation
Gas chromatography
Mass spectrometry
Flow fields
Decomposition
Water
Degradation
Depolymerization
Styrene
Molar mass
Reaction products
Polymers
Monomers
Temperature
Hot Temperature

Keywords

  • thermal field-flow fractionation (ThFFF)
  • expandable polystyrene (EPS)
  • pressurized hot water (PHW)
  • supercritical water (SCW)
  • decomposition
  • depolymerization

Cite this

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title = "Thermal field-flow fractionation and gas chromatography - mass spectrometry in determination of decomposition products of expandable polystyrene after reactions in pressurized hot water and supercritical water",
abstract = "Nonbiodegradable polymers are an environmental concern, and various techniques have been developed to recycle and reuse them. Pressurized hot water, or supercritical water, is an interesting alternative as a reaction medium for depolymerisation, since water is a readily available {"}green{"} solvent and its physicochemical properties can be widely adjusted in the vicinity of the critical point. In the present study, various reaction conditions were applied to obtain as high styrene monomer yields as possible in the decomposition of industrial expandable polystyrene (EPS) in a pressurized, high-temperature aqueous medium. Other main reaction products were of interests as well. Thermal field-flow fractionation (ThFFF) was used after the degradation of EPS to check for possible high molar mass products. As a whole, the analytical techniques (GC-MS and ThFFF) employed in the characterization of EPS degradation in a pressurized, high-temperature medium complemented each other well and showed good performance.",
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author = "Juhani Kronholm and Pertti Vastam{\"a}ki and Riikka R{\"a}s{\"a}nen and Annukka Ahonen and Kari Hartonen and Marja-Liisa Riekkola",
year = "2006",
doi = "10.1021/ie058058f",
language = "English",
volume = "45",
pages = "3029--3035",
journal = "Industrial & Engineering Chemistry Research",
issn = "0888-5885",
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Thermal field-flow fractionation and gas chromatography - mass spectrometry in determination of decomposition products of expandable polystyrene after reactions in pressurized hot water and supercritical water. / Kronholm, Juhani (Corresponding Author); Vastamäki, Pertti; Räsänen, Riikka; Ahonen, Annukka; Hartonen, Kari (Corresponding Author); Riekkola, Marja-Liisa.

In: Industrial & Engineering Chemistry Research, Vol. 45, No. 9, 2006, p. 3029-3035.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Thermal field-flow fractionation and gas chromatography - mass spectrometry in determination of decomposition products of expandable polystyrene after reactions in pressurized hot water and supercritical water

AU - Kronholm, Juhani

AU - Vastamäki, Pertti

AU - Räsänen, Riikka

AU - Ahonen, Annukka

AU - Hartonen, Kari

AU - Riekkola, Marja-Liisa

PY - 2006

Y1 - 2006

N2 - Nonbiodegradable polymers are an environmental concern, and various techniques have been developed to recycle and reuse them. Pressurized hot water, or supercritical water, is an interesting alternative as a reaction medium for depolymerisation, since water is a readily available "green" solvent and its physicochemical properties can be widely adjusted in the vicinity of the critical point. In the present study, various reaction conditions were applied to obtain as high styrene monomer yields as possible in the decomposition of industrial expandable polystyrene (EPS) in a pressurized, high-temperature aqueous medium. Other main reaction products were of interests as well. Thermal field-flow fractionation (ThFFF) was used after the degradation of EPS to check for possible high molar mass products. As a whole, the analytical techniques (GC-MS and ThFFF) employed in the characterization of EPS degradation in a pressurized, high-temperature medium complemented each other well and showed good performance.

AB - Nonbiodegradable polymers are an environmental concern, and various techniques have been developed to recycle and reuse them. Pressurized hot water, or supercritical water, is an interesting alternative as a reaction medium for depolymerisation, since water is a readily available "green" solvent and its physicochemical properties can be widely adjusted in the vicinity of the critical point. In the present study, various reaction conditions were applied to obtain as high styrene monomer yields as possible in the decomposition of industrial expandable polystyrene (EPS) in a pressurized, high-temperature aqueous medium. Other main reaction products were of interests as well. Thermal field-flow fractionation (ThFFF) was used after the degradation of EPS to check for possible high molar mass products. As a whole, the analytical techniques (GC-MS and ThFFF) employed in the characterization of EPS degradation in a pressurized, high-temperature medium complemented each other well and showed good performance.

KW - thermal field-flow fractionation (ThFFF)

KW - expandable polystyrene (EPS)

KW - pressurized hot water (PHW)

KW - supercritical water (SCW)

KW - decomposition

KW - depolymerization

U2 - 10.1021/ie058058f

DO - 10.1021/ie058058f

M3 - Article

VL - 45

SP - 3029

EP - 3035

JO - Industrial & Engineering Chemistry Research

JF - Industrial & Engineering Chemistry Research

SN - 0888-5885

IS - 9

ER -