Chemical recycling of commercial polyurethane foams by glycolysis

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28110%2F24%3A63583798" target="_blank" >RIV/70883521:28110/24:63583798 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Chemical recycling of commercial polyurethane foams by glycolysis

Original language description

The chemical recycling of currently used polymeric materials is one of the most promising routes to industrial circularity. Namely, the automotive industry employs many macromolecular materials, including polyurethane (PU) systems. In particular, reactoplastic PU products are difficult to reuse or mechanically recycle since they cannot be melted or dissolved. Glycolysis is a chemical process using certain polyols (typically containing/similar to glycerol) to deconstruct the formed macromolecular site of the thermoset, resulting in the liquid raw recycled polyol production. This liquid recycled mixture can serve as a reactant for additional PU manufacture. The formed recycled polyol exhibits unique material properties depending on the used nucleophile. This work summarizes the reactivity and structural characterization comparisons of differently produced recycled polyols. The nucleophiles used for the glycolysis were diethylene glycol (DEG) and coconut oil glycerides (COG). The viscosity increases of recycled polyol with DEG reached 400% compared to the original foam polyol, while the COG recycled polyol exhibited an apparent viscosity upsurge of 39% (at 25 °C). The reactivity was not affected for the foamed system with 20 w% of DEG recycled polyol. On the contrary, COG-formed recycled polyol reaction times (cream and rise) decreased by approximately 30% (the system is more reactive). Both recycled polyols were incorporated into the original standard solution, and their functional properties are yet to be studied.

Czech name

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Czech description

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Type

O - Miscellaneous

CEP classification

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OECD FORD branch

10404 - Polymer science

Project

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Continuities

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Publication year

2024

Confidentiality

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