Stretchable, Ultratough, and Intrinsically Self-Extinguishing Elastomers with Desirable Recyclability.

ABSTRACT: Advanced elastomers are increasingly used in emerging areas, for example, flexible electronics and devices, and these real-world applications often require elastomers to be stretchable, tough and fire safe. However, to date there are few successes in achieving such a performance portfolio due to their different governing mechanisms. Herein, a stretchable, supertough, and self-extinguishing polyurethane elastomers by introducing dynamic π-π stacking motifs and phosphorus-containing moieties are reported. The resultant elastomer shows a large break strain of ≈2260% and a record-high toughness (ca. 460 MJ m^-3 ), which arises from its dynamic microphase-separated microstructure resulting in increased entropic elasticity, and strain-hardening at large strains. The elastomer also exhi

SUBMITTER: Xue Y 

PROVIDER: S-EPMC10037964 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature