| Title | Single-Phase Recycling of Flexible Polyurethane Foam by Glycolysis and Oxyalkylation: Large-Scale Industrial Evaluation |
|---|---|
| ID_Doc | 9948 |
| Authors | Ko, JY; Zarei, M; Lee, SG; Cho, KL |
| Title | Single-Phase Recycling of Flexible Polyurethane Foam by Glycolysis and Oxyalkylation: Large-Scale Industrial Evaluation |
| Year | 2023 |
| Published | Acs Sustainable Chemistry & Engineering, 11.0, 27 |
| Abstract | This study focuses on the developmentof a single-phasechemical approach for recycling automotive polyurethane foam fromthe post-consumer wastes of automobiles. Theefficient recycling of polyurethane foams (PUFs) is criticalto reduce the environmental effects of end-of-life wastes. In general,industrial PUF recycling approaches have been focused on PUF mattresses;however, the recycling of PUFs used in the automotive industry israrely discussed because of the specific parameters related to dynamic/staticcomfort, durability, and hygienic regulations. Here, we present, forthe first time, an efficient chemical approach for recycling automotivePUFs from post-consumer wastes (PCWs) of automobiles. The PUF scrapwas chemically decomposed via glycolysis without any phase separationand was used as a reactant in a reaction with alkylene oxide to obtainmore stable oxyalkylated polyols. To fabricate various automotivePUF-based products, including seats, headrests, and sound-absorbingmaterials, 10-20 wt % recycled polyol was added to virgin polyol.As a result, the obtained PUFs containing recycled polyol exhibitedphysical characteristics, formability, and volatile organic compound(VOC) contents similar to those of virgin PUFs. Moreover, three cyclabilitytests for a PUF seat confirmed that the physical properties of thePUF remained stable during cyclic applications. The proposed automotivePUF recycling process will promote a circular economy and sustainabilityand will increase the recycling rate of PUFs in the automotive industry. |
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