122nd General Meeting of the KCS

Type Poster Presentation
Area Polymer Chemistry
Room No. Grand Ballroom
Time 10월 18일 (목요일) 11:00~12:30
Code POLY.P-6
Subject Self-assembly of complex doubly grafted bottlebrush polymer from branched multiblock macromonomers
Authors Jiyun Nam, Myungeun Seo*, Jeung Gon Kim1,*
Graduate School of Nano Science Technology, Korea Advanced Institute of Science and Technology, Korea
1Department of Chemistry, Chonbuk National University, Korea
Abstract The advancement of polymerization techniques extends complexity of polymer architecture from block copolymers followed by star polymers and graft polymers. As a class of graft copolymers, bottlebrush polymers are graft polymers containing grafted chains with every repeating unit. They exhibit high density of functional groups as well as extended conformation due to repulsion of the grafted chains. Janus-type bottlebrush polymer emerged as one of the bottlebrush polymer types in visualization for cylindrical Janus nanoobjects. Doubly grafted side chains attached along the backbone enables to achieve cylindrical Janus morphology type via intramolecular segregation of incompatible side chain. Here we explored synthesis of doubly grafted bottlebrush polymers (DGBP) via graft-through ring-opening metathesis polymerization (ROMP) of branched multiblock macromonomers (BMMMs) towards complex Janus-type bottlebrush polymers with two different surfaces. By utilizing single monomer unit insertion (SUMI) in the reversible addition-fragmentation chain transfer (RAFT) process, we will discuss synthesis of the BMMMs containing two, three blocks with different compositions. Characterization of complex Janus DGBP and their self-assembly behaviors will be also presented.
E-mail nom0830@kaist.ac.kr