| 학회 |
한국고분자학회 |
| 학술대회 |
2011년 가을 (10/06 ~ 10/07, 김대중 컨벤션센터) |
| 권호 |
36권 2호 |
| 발표분야 |
고분자 구조 및 분석－Scattering & Spectroscopy |
| 제목 |
Structural Studies of Dendritic Star-Shaped Polystyrene with Various Arms Using Synchrotron X-ray Scattering |
| 초록 |
We investigated the structure and shapes of well-defined star-PS polymers with 6,9,17, 33, and 57 arms in good and Θ solvents using SAXS with a synchrotron radiation source. The SAXS data revealed details of the molecular sizes and shapes of the star-PS polymer series, including blob contributions, the radius of gyration, the pair distributions, radial electron density distributions, and the Zimm-Stockmayer and Roovers g-factors. The molecular size and shape of the star-PS polymers varied with the number of arms. The radii of gyration of star-PS polymers ranged from 30.2 to 49.5 , depending on the number of arms, the solvent, and the molecular weights. The shapes of the star-PS polymers containing 6, 9, or 17 arms could be described as fuzzy ellipsoids, consisting of a core and a shell. The aspect ratio decreased with the increasing number of arms. The fuzziness ranged from 35.6 to 51.9%, depending on the number of arms and the solvent. |
| 저자 |
정성민1, 이문호1, 진상우1, 진경식1, 함석규1, 김동민1, 김진철1, 정정운1, 노예철1, 안병철1, 권원상2, 김경태1, 김미희1, 고용기1, 권경호1, 김영용1, Akira Hirao3, Tomoya Higashihara3
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| 소속 |
1postech, 2posatech, 3Tokyo Institute of Technology |
| 키워드 |
Synchrotron X-ray Scattering; Star Polystyrenes; SAXS; Characterization
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| E-Mail |
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