The environmental impact of elastomer waste,typically managed through incineration or landfilling,calls for more sustainable alternatives.Traditional thermoset elastomers,while strong and durable,are difficult to recy...The environmental impact of elastomer waste,typically managed through incineration or landfilling,calls for more sustainable alternatives.Traditional thermoset elastomers,while strong and durable,are difficult to recycle due to their permanent chemical crosslinks.Recent progress in supramolecular elastomers has improved recyclability but often at the expense of performance.Herein,we introduced a boron–nitrogen(B–N)and boron–oxygen(B–O)coordination-based supramolecular elastomer(BNOSE)that achieved both high mechanical strength and efficient chemical recyclability.The dynamic B–N and B–O bonds in BNOSE provided robust internal bonding,allowing thematerial to break down in amild ethanol solvent,while achieving high recovery rates.With a tensile strength over 43 MPa and toughness above 121 MJ/m3,BNOSE surpassedmany commercial elastomers and existing chemical recyclable thermoplastic elastomers.This material provided a sustainable solution without sacrificing performance,demonstrating potential for diverse applications such as soft robotics and flexible electronics.Additionally,its scalable design could be extended to other polymers,addressing the rising demand for high-performance,recyclable materials across various industries.展开更多
基金supported by the Singapore National Research Fellowship(grant no.NRF-NRFF11-2019-0004)the Singapore Ministry of Education(MOE)Tier 2 Grant(grant no.MOE-T2EP30220-0006).
文摘The environmental impact of elastomer waste,typically managed through incineration or landfilling,calls for more sustainable alternatives.Traditional thermoset elastomers,while strong and durable,are difficult to recycle due to their permanent chemical crosslinks.Recent progress in supramolecular elastomers has improved recyclability but often at the expense of performance.Herein,we introduced a boron–nitrogen(B–N)and boron–oxygen(B–O)coordination-based supramolecular elastomer(BNOSE)that achieved both high mechanical strength and efficient chemical recyclability.The dynamic B–N and B–O bonds in BNOSE provided robust internal bonding,allowing thematerial to break down in amild ethanol solvent,while achieving high recovery rates.With a tensile strength over 43 MPa and toughness above 121 MJ/m3,BNOSE surpassedmany commercial elastomers and existing chemical recyclable thermoplastic elastomers.This material provided a sustainable solution without sacrificing performance,demonstrating potential for diverse applications such as soft robotics and flexible electronics.Additionally,its scalable design could be extended to other polymers,addressing the rising demand for high-performance,recyclable materials across various industries.
