The invention relates to a hierarchical microphase separation strain enhanced ionic conductive
elastomer fiber and a preparation method and application thereof, the interior of the ionic conductive
elastomer fiber has a bicontinuous
network structure, and the ionic conductive
elastomer fiber comprises an EOEOEA / PAA continuous phase and a PEA / LiTFSI continuous phase which are interpenetrated. According to the fiber, a
copolymer P (PEA-co-EOEOEA) is used as a
structural framework, an EOEOEA / PAA continuous phase is constructed by an EOEOEA
chain segment and PAA based on a
hydrogen-bond interaction, a PEA / LiTFSI continuous phase is constructed by a PEA
chain segment and LiTFSI based on a strong coordination interaction, the EOEOEA / PAA continuous phase is used as a mechanical reinforcement phase, and the PEA / LiTFSI continuous phase is used as an
ion transport phase. Through hierarchical microphase separation
engineering and a dual swelling process, a bicontinuous
network structure with EOEOEA
chain segment (
soft segment) / PAA as a mechanical reinforcement phase and PEA chain segment (hard segment) / LiTFSI as an
ion transport phase is constructed, collaborative optimization of mechanical properties and
conductivity is realized, and the performance of the
composite material is improved. The ionic conductive elastomer fiber with ultrahigh stretchability,
toughness, rapid self-repairing property and strain-insensitive
ionic conductivity is obtained, and meanwhile, simple and continuous preparation of the fiber is realized.