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제108회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Structural behavior of toroidal micelle with various block composition and molecular weight

2011년 8월 1일 16시 45분 20초
Ⅳ-POLY.P-70 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
금 <발표Ⅳ>
저자 및
정주은, 장태현, HUANG, Haiying1, RAHMAM, M. Shahinur2, MAYS, Jimmy2
포항공과대학교 화학과, Korea
1Chang Chun Institute of Applied Chemistry, Chinese Academy of Sciences, China
2Department of Chemistry, The University of Tennessee, United States
The block copolymer is self-assembled into a micelle in a selective solvent. Recently, Huang et al. reported the highly uniform toridal micelle from polyisoprene-block-poly(2-vinylpyridine) (PI-b-P2VP) in mixture solvent system. In this study, we have investigated the factors in the structural behavior of toroidal micelle such as block composition and total molecular weight of PI-b-P2VP. We synthesized two series of PI-b-P2VP samples by anionic polymerization. Each PI-b-P2VP in the one series has the same total molecular weight but different block composition. And the other series exhibits the same block composition but different total molecular weight. The structural analysis of prepared micelle was carried out by static and dynamic light scattering method in solution state, and their structures were visualized by atomic force microscopy. In the first series of sample, morphological change of micelle was not observed with wide range of PI block composition, but the molecular weight of micelle was changed. In the case of second series of sample, the hydrodynamic size of toroidal micelle depended on the total molecular weight.