A closed loop for polyurethane biofoams designed in line with the European Green Deal

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F25%3A00637977" target="_blank" >RIV/61389013:_____/25:00637977 - isvavai.cz</a>

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S0301479725028312?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0301479725028312?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jenvman.2025.126855" target="_blank" >10.1016/j.jenvman.2025.126855</a>

Result language

angličtina

Original language name

A closed loop for polyurethane biofoams designed in line with the European Green Deal

Original language description

Glycolysis is an efficient chemical degradation method allowing depolymerization of thermosetting rigid polyurethane foams into reusable monomers and oligomers. This study looks into a chemolysis of polyurethane biofoams containing different amounts of biopolyol (25–100 %) in the polyol premix. Increasing the biopolyol content in a foam had a positive effect on the viscosity of the rebiopolyol obtained as a result of the chemolysis reaction. As the biopolyol content increased, the viscosity decreased from 56,000 mPa s (foam subjected to chemolysis without biopolyol) to 4400 mPa s, which is by over 90 %. The foaming process was not affected in any significant way by different chemical structures of the rebiopolyols, as confirmed by, among others, FTIR and MALDI-TOF. The content of rebiopolyol in the system had a significant effect on the course of the foaming process, regardless the rebiopoyol structure. The rebiopolyol chemical structure has a significant impact on the content of closed cells of the newly-produced biofoams. The foams containing the rebiopolyols derived from the foams having more than 50 % of petrochemical polyol were characterized by the highest degree of cell openness. The content of closed cells had a direct impact on the foam mechanical properties. The lower the closed cells content, the worse the foam compression strength. However, it should be noted that open-cell foams are finding more and more applications. Thus, the effect observed in this study seems to be leading in a promising direction for the development of open-cell biofoams with the participation of rebiopolyols.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10404 - Polymer science

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2025

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Environmental Management

ISSN

0301-4797

e-ISSN

1095-8630

Volume of the periodical

392

Issue of the periodical within the volume

September

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

9

Pages from-to

126855

UT code for WoS article

001547986900003

EID of the result in the Scopus database

2-s2.0-105012382284