| Title | Biobased Ultralow-Density Polyurethane Foams with Enhanced Recyclability |
|---|---|
| ID_Doc | 7774 |
| Authors | Gotkiewicz, O; Kirpluks, M; Walterová, Z; Kocková, O; Abbrent, S; Parcheta-Szwindowska, P; Cabulis, U; Benes, H |
| Title | Biobased Ultralow-Density Polyurethane Foams with Enhanced Recyclability |
| Year | 2024 |
| Published | Acs Sustainable Chemistry & Engineering, 12, 4 |
| Abstract | Polyurethane (PUR) foams are widely used in many engineering applications, but their efficient recycling has remained a major challenge for many years. This study presents a novel strategy of incorporating hydrolyzable ester units into the PUR structure to enhance PUR foam recyclability. The present eco-design concept of PUR materials enables fully the replacement of petrochemical polyols with biobased alternatives and production of ultralow-density (16 kg center dot m(-3)) PUR foams. To reach this target, a series of low-function polyols based on succinic acid (SA) were first synthesized. Their subsequent use in combination with a high-functional biobased tall oil-derived polyol led to the production of highly homogenous semirigid, partly open-cell PUR foams with outstanding structural, thermal, and mechanical properties. Additionally, the study shows that the incorporation of SA-polyols with hydrolyzable ester linkages into the PUR foams significantly enhances their recyclability via glycolysis, proving their potential in contributing to a circular economy and addressing plastic waste concerns. |
| https://pubs.acs.org/doi/pdf/10.1021/acssuschemeng.3c06924 |
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