Room-temperature healable, recyclable and mechanically super-strong poly(urea-urethane)s cross-linked with nitrogen-coordinated boroxines
Zhiwei Guo, Chunyang Bao, Xiaohan Wang, Xingyuan Lu, Haoxiang Sun, Xiang Li, Jian Li, Junqi Sun
Abstract
A strong poly(urea-urethane) cross-linked by boroxines shows a high mechanical strength of ∼47 MPa and toughness of ∼190 MJ m<sup>−3</sup> and it can be healed and recycled at room temperature with the assistance of ethanol or a water/ethanol mixture.
Topics & Concepts
UreaToughnessEthanolMaterials scienceNitrogenMechanical strengthChemical engineeringComposite materialPolymer chemistryNuclear chemistryChemistryOrganic chemistryEngineeringPolymer composites and self-healingCarbon dioxide utilization in catalysisbiodegradable polymer synthesis and properties