Self-Assembly of Grafting Density-Controlled Bottlebrush Random Copolymer
발표자
신혜 (숭실대학교)
연구책임자
신재만 (숭실대학교)
공동저자
신혜 (숭실대학교), 백민준 (숭실대학교), 이강준 (숭실대학교), 신재만 (숭실대학교)
초록
내용
Bottlebrush polymers are a type of graft polymer with a polymeric side-chain attached to the backbone, providing several unique properties, including suppressed entanglement and rapid self-assembly. While the self-assembled morphology and the domain structure have been thoroughly studied in bottlebrush block copolymers, less attention has been paid to bottlebrush random copolymers (BRCP). In particular, the role of grafting density in BRCPs is vaguely understood. Here, poly(styrene) and poly(dimethylsiloxane) based BRCPs with controlled grafting density are synthesized via ROMP using cis-norbornene-2,3-exo-dicarboxylic diethyl ester as a diluent. Microphase separation of BRCPs exhibited an unusually wide range of grafting densities that retained the conventional morphologies (i.e., lamellae, cylinders, and spheres). Furthermore, the domain spacing remained constant, showing a large difference in the phase behavior compared to the conventional bottlebrush block copolymers.