| 학회 |
한국고분자학회 |
| 학술대회 |
2015년 봄 (04/08 ~ 04/10, 대전컨벤션센터) |
| 권호 |
40권 1호 |
| 발표분야 |
Self-Assembled Materials |
| 제목 |
Non-classical Packing Structures in Block Copolymers |
| 초록 |
Block copolymers have been investigated as model systems to understand self-assembling materials due to their highly tunable dynamics and structures. We recently discovered a non-classical packing array of self-assembled particle-like domains in simple linear block copolymers, known as a σ-phase with a tetragonal symmetry hosting 30 lattice sites in a unit cell, one of the representative crystal structures in Frank-Kasper phases. Extensive analysis on the scattering patterns suggests the σ-phase is formed by the dynamic chain exchange process between particle domains, which increases the sphericity of domains and finally induces the symmetry breaking toward the low symmetry σ-phase from a classical body-centered cubic symmetry. We found this process is surprisingly analogous to the symmetry breaking in certain metal alloys and elements. |
| 저자 |
이상우 |
| 소속 |
Rensselaer Polytechnic Institute |
| 키워드 |
Block Copolymers; Self-assembly; Packing Strucutres
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| E-Mail |
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