| 학회 |
한국고분자학회 |
| 학술대회 |
2009년 가을 (10/08 ~ 10/09, 광주과학기술원 오룡관) |
| 권호 |
34권 2호 |
| 발표분야 |
고분자 합성 |
| 제목 |
Synthesis Well-Defined Poly(styrene)-b-Poly(2-vinyl pyridine)-b-Poly(n-hexylisocyanate) by Using Anionic Polymerization |
| 초록 |
A well-defined amphiphilic coil-coil-rod triblock copolymers of styrene (St), 2-vinylpyridine (2VP) and n-hexyl isocyanate (HIC) were synthesized with quatitative yields by living anionic polymerization. The homopolymerization of St was carried out at -78 oC in THF by using second butyllithium (S-BuLi) as an initiator. Reactivity of living polystyryl ion was reduced by adding small amount of diphenylethylene(DPE) and then block copolymerization of it with 2VP was performed at -78 oC. Triblock copolymerization with HIC was performed at -98 oC in the presence of sodium tetraphenylborate (NaBPh4) to prevent backbiting reactions during isocyanate polymerization. We obtained copolymer with a controlled molecular weight and narrow molecular weight distribution. The self-organization of the copolymer was checked in different solvents and solvents mixture. The obtained copolymer was characterized by 1H NMR and SEC-LS. |
| 저자 |
박철민, 민준근, 샤, 이재석
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| 소속 |
광주과학기술원 신소재공학과 / Program for Integrated Molecular System (PIMS) |
| 키워드 |
Triblock copolymers; anionic polymerization
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| E-Mail |
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