Premium
Constructing the core–shell structured island domain in polymer blends to achieve high dielectric constant and low loss
Author(s) -
Yang Jinghui,
Zhang Tingting,
Zhang Yongsheng,
Zhang Nan,
Huang Ting,
Wang Yong
Publication year - 2020
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.5937
Subject(s) - materials science , dielectric , composite material , dielectric loss , barium titanate , carbon nanotube , composite number , thermoplastic polyurethane , polymer , high κ dielectric , elastomer , ceramic , optoelectronics
Abstract Carbon nanotubes (CNTs) and barium titanate (BaTiO 3 ) (BT) were simultaneously introduced into the immiscible blend poly(ethylene‐ co ‐vinyl acetate)/thermoplastic urethane (EVA/TPU), and the EVA/TPU/CNT/BT quaternary polymer composite blends with core–shell structured island TPU domain were successfully prepared, in which CNTs in the TPU domain act as the core and the BT spheres at the interface of the TPU and EVA act as the shell. A core–shell structured island can lead to the formation of micro‐capacitors and further accumulate electron storage owing to the incorporation of CNTs and BT; on the other hand, a BT shell can be assembled along the TPU spheres, reducing the possibility of formation of a conductive CNT network, resulting in suppressed dielectric loss. Therefore, CNTs and BT were tailor‐made into blend composites with a core–shell structured domain, which can achieve an increased dielectric constant by 176% and decreased low dielectric loss by 80% compared with the blend composites with only CNTs in the TPU domain. © 2019 Society of Chemical Industry