Affiliation:
1. Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Engineering Plastics Institute of Chemistry Chinese Academy of Sciences Beijing 100190 P. R. China
2. University of Chinese Academy of Sciences Beijing 100049 P. R. China
Abstract
AbstractSelf‐healing polyamide multiblock copolymer with robust mechanical properties is highly desired. Here, an alicyclic diamine monomer, isophoronediamine (IPDA), with asymmetric structure and substantial steric hindrance was incorporated into the backbone of poly(ether‐b‐amide) multiblock copolymer. Based on the phase‐lock effect, the mechanical properties and segmental mobility of copolymers can be modulated on a large scale via adjusting the molecular weight of hard segments. An extraordinary tensile strength of 32.0 MPa and an excellent elongation at break of 1881 % were simultaneously achieved, which leaded to a record‐high toughness of 328.9 MJ m−3 for self‐healable polyamide elastomers. The synergism between the dynamic H‐bonding networks and the diffusion of polymer chains contributed to a balance between the mechanical performance and self‐healing efficiency of copolymers. Due to the adjustable mechanical performance, rapid scratch self‐healing ability and superior impact resistance, the resultant copolymers showed great potential in the fields of protective coatings and soft electronics.
Funder
Ministry of Science and Technology of the People's Republic of China
Subject
General Chemistry,Catalysis,Organic Chemistry
Cited by
4 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献