Cristin-resultat-ID: 2281429
Sist endret: 17. juli 2024, 19:16
NVI-rapporteringsår: 2024
Resultat
Vitenskapelig artikkel
2024

Upgrading and Enhancement of Recycled Polyethylene Terephthalate with Chain Extenders: In-Depth Material Characterization

Bidragsytere:
  • Christian W. Karl
  • Bjørnar Arstad
  • Madina Shamsuyeva
  • Jacek Lecinski
  • Kjell Olafsen
  • Åge Gellein Larsen
  • mfl.

Tidsskrift

Industrial & Engineering Chemistry Research
ISSN 0888-5885
e-ISSN 1520-5045
NVI-nivå 2

Om resultatet

Vitenskapelig artikkel
Publiseringsår: 2024
Publisert online: 2024
Volum: 63
Hefte: 28
Sider: 12277 - 12287

Klassifisering

Vitenskapsdisipliner

Organisk kjemi

Emneord

Polymerer • Polymerkjemi • Mekanisk gjenvinning

Beskrivelse Beskrivelse

Tittel

Upgrading and Enhancement of Recycled Polyethylene Terephthalate with Chain Extenders: In-Depth Material Characterization

Sammendrag

Chemical chain extenders (CEs) can be used to restore the properties of recycled low-molecular-weight polyethylene terephthalate (PET). The aim of this work is to investigate the influence of the type and concentration of the CEs Joncryl and pyromellitic dianhydride (PMDA) on the viscosity and other rheological properties with a unique combination of different methods based on industrial samples originating from recycled PET bottles and trays. The resulting chain-extended thermoplastics were characterized by a combination of differential scanning calorimetry, viscometry, cone plate rheometry, pyrolysis-gas chromatography-mass spectroscopy, optical photo-thermal infrared spectroscopy, 13 C solid-state-and 1 H NMR liquid spectroscopy, and size exclusion chromatography. For a recycled PET mixture containing bottle and tray materials, our investigations have shown that a significantly better effect for chain elongation can be achieved with Joncryl compared to PMDA. This can presumably be attributed to water molecules formed during the use of PMDA, which accelerate the degradation of PET. The storage modulus values are therefore significantly higher for the samples with Joncryl compared to PMDA. The results of this study show that chain extension with Joncryl proceeds better compared to the reaction with PMDA.

Bidragsytere

Christian Karl

Bidragsyterens navn vises på dette resultatet som Christian W. Karl
  • Tilknyttet:
    Forfatter
    ved Materialer og nanoteknologi ved SINTEF AS

Bjørnar Arstad

  • Tilknyttet:
    Forfatter
    ved Organisk kjemi ved Universitetet i Oslo

Madina Shamsuyeva

  • Tilknyttet:
    Forfatter

Jacek Lecinski

  • Tilknyttet:
    Forfatter

Kjell Olafsen

  • Tilknyttet:
    Forfatter
    ved Materialer og nanoteknologi ved SINTEF AS
1 - 5 av 9 | Neste | Siste »