Malleable and thermally recyclable polyurethane foam
作者： Xiang-Zhao Wang , Meng-Shi Lu , Jian-Bing Zeng , Yunxuan Weng , Yi-Dong Li
DOI: 10.1039/D0GC03471A
关键词: Thermal compression 、 Molding (decorative) 、 Polyurethane 、 Disulfide bond 、 Composite material 、 Disulfide exchange 、 Thermosetting polymer 、 Materials science
摘要: Thermosetting polyurethane (PU) foams, which cannot be recycled economically and efficiently due to their permanently crosslinked structures, have caused significant environmental concerns after service. To improve the sustainable development of the PU foam industry, herein, we report malleable PU foams that contain a dynamic disulfide bond. The disulfide exchange reaction under heat enables the rearrangement of the network topology of the PU foam, imparting malleability and thermal processability. The disulfide …
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