Single-catalyst reactions from depolymerization to repolymerization: Transformation of polyethylene terephthalate to polyisocyanurate foam with deep eutectic solvents
DC Field | Value | Language |
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dc.contributor.author | Lee, Pyung Soo | - |
dc.contributor.author | Jung, Simon MoonGeun | - |
dc.date.accessioned | 2023-02-10T03:41:24Z | - |
dc.date.available | 2023-02-10T03:41:24Z | - |
dc.date.issued | 2022-12 | - |
dc.identifier.issn | 0021-8995 | - |
dc.identifier.issn | 1097-4628 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/60409 | - |
dc.description.abstract | Polyisocyanurate (PIR) has been used as a flame retardant insulation material because of its improved thermal insulation and flame-retarding effects due to its cyclic structure with an isocyanate trimer group. When a deep eutectic solvent (DES) is used as a catalyst, PET glycolysis produces bis(2- hydroxyethyl terephthalate) (BHET) and its derivatives. These recycled polyols react with isocyanate to form PIR foam (PIRF) in the presence of a physical blowing agent. DES-based glycolysis is a low-energy process with a relatively low temperature and short reaction time. In this study, a potassium-based DES system was applied for the sequential depolymerization and repolymerization of waste PET into PIRFs. Potassium-based DESs were used as hydrogen bond acceptors (HBAs), and ethylene glycol (EG), glycerol, and urea were used as hydrogen bond donors (HBDs). The PIRF was obtained through one-pot depolymerization and repolymerization with a single-catalyst DES system. All DES catalyst systems effectively decomposed PET; the PET conversion efficiency reached 95% after 2 h reaction. The recycled PIR was more thermally stable (approximately 26.9% limiting oxygen index (LOI) and approximately 68.8 W/g heat release rate (HRR)). This paper presents an environmentally friendly and robust upcycling process for the transformation of waste PET into PIRF. | - |
dc.language | 영어 | - |
dc.language.iso | ENG | - |
dc.publisher | WILEY | - |
dc.title | Single-catalyst reactions from depolymerization to repolymerization: Transformation of polyethylene terephthalate to polyisocyanurate foam with deep eutectic solvents | - |
dc.type | Article | - |
dc.identifier.doi | 10.1002/app.53205 | - |
dc.identifier.bibliographicCitation | JOURNAL OF APPLIED POLYMER SCIENCE, v.139, no.47 | - |
dc.description.isOpenAccess | N | - |
dc.identifier.wosid | 000864759700001 | - |
dc.identifier.scopusid | 2-s2.0-85139434905 | - |
dc.citation.number | 47 | - |
dc.citation.title | JOURNAL OF APPLIED POLYMER SCIENCE | - |
dc.citation.volume | 139 | - |
dc.type.docType | Article | - |
dc.publisher.location | 미국 | - |
dc.subject.keywordAuthor | deep eutectic solvent | - |
dc.subject.keywordAuthor | depolymerization | - |
dc.subject.keywordAuthor | polyisocyanurate | - |
dc.subject.keywordAuthor | recycled polyol | - |
dc.subject.keywordAuthor | waste PET | - |
dc.subject.keywordPlus | POLYURETHANE FOAMS | - |
dc.subject.keywordPlus | PET | - |
dc.subject.keywordPlus | GLYCOLYSIS | - |
dc.relation.journalResearchArea | Polymer Science | - |
dc.relation.journalWebOfScienceCategory | Polymer Science | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
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