| 학회 |
한국고분자학회 |
| 학술대회 |
2016년 봄 (04/06 ~ 04/08, 대전컨벤션센터) |
| 권호 |
41권 1호 |
| 발표분야 |
고분자구조 및 물성 |
| 제목 |
Highly Pure 8-Shaped and Cage-Shaped Cyclic Polystyrenes |
| 초록 |
Topological control of polymers has provided opportunities in polymer science since it gives unprecedented properties from nontraditional molecular architectures. Nonlinear polystyrenes such as star-, figure-8- and cage-shaped architectures were synthesized by combining atom transfer radical polymerization and click chemistry. Highly purified polymers with the designed chain topologies (figure-8, cage) were obtained by using a preparative size exclusion chromatography, which was confirmed by SEC, MALDI-TOF MS, 1H NMR, FT-IR spectrometry. Their purities were determined by using a two dimensional liquid chromatography. It was found that the glass transition temperatures were in order of cage-, figure-8-, and star-shaped polymers possibly due to the multiple links that constrain the overall molecular diffusivity in the case of multi-cyclic polymers (cage, figure-8). Monte Carlo simulation on the glass transition behavior of model system also agreed well with the experimental results. |
| 저자 |
이태헌1, 정종화1, 정해지1, 오중석2, 허준3, 장태현2, 백현종1
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| 소속 |
1부산대, 2포항공과대, 3고려대 |
| 키워드 |
ATRP; click chemistry; multicyclic polymers; cyclic polymers; glass transition temperature
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| E-Mail |
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