Chemical recycling of flexible polyurethane foams by aminolysis to recover high-quality polyols

Grdadolnik, Maja (avtor), Zdovc, Blaž (avtor), Drinčić, Ana (avtor), Önder, Özgün Can (avtor), Utroša, Petra (avtor), Garcia Ramos, Susana (avtor), Dominguez Ramos, Enrique (avtor), Pahovnik, David (avtor), Žagar, Ema (avtor)

Polyurethane foams (PUFs) are widely used commodity materials, but most of them end up in landfills at the end of their life, which is not in line with the circular economy approach. Here, we introduce microwave-assisted aminolysis with amine reagents that contain primary and tertiary amino groups in the structure. These reagents enable complete degradation of the urethane groups in the structure of the flexible PUFs with a much lower amount of degradation reagent than is typically required for solvolysis reactions. The purified, recovered polyols are close equivalents to the corresponding virgin polyols in terms of their structural and molar mass characteristics. Therefore, they can be used for the production of high-quality PUFs without having to adapt the synthesis process. The flexible PUFs made from recovered polyols have comparable mechanical properties to those made from virgin polyols.

• Jezik: Angleški jezik
• Ključne besede: sustainable chemistry, waste prevention, chemical recycling, aminolysis, flexible polyurethane foam, microwave chemistry, degradation, mixtures, polyols, reagents, substitution reactions
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FKKT - Fakulteta za kemijo in kemijsko tehnologijo
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2023
• Št. strani: Str. 10864–10873
• Številčenje: Vol. 11, iss. 29
• PID: 20.500.12556/RUL-152637
• UDK: 620.1/.2
• ISSN pri članku: 2168-0485
• DOI: 10.1021/acssuschemeng.3c02311
• COBISS.SI-ID: 158950403
• Datum objave v RUL: 01.12.2023

Gradivo je del revije

• Naslov: ACS sustainable chemistry & engineering
• Skrajšan naslov: ACS sustain. chem. & eng.
• Založnik: American Chemical Society
• ISSN: 2168-0485
• COBISS.SI-ID: 519846169

Licence

• Licenca: CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by/4.0/deed.sl
• Opis: To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: materiali, poliuretanske pene, odlagališča, razgradnja, odpadki

Projekti

• Financer: EC - European Commission
• Program financ.: H2020
• Številka projekta: 820665
• Naslov: Demonstration of Innovative Technologies towards a More Efficient and Sustainable Plastic Recycling
• Akronim: POLYNSPIRE

• Financer: ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
• Številka projekta: P2-0145
• Naslov: Polimeri in polimerni materiali s posebnimi lastnostmi