| 학회 |
한국고분자학회 |
| 학술대회 |
2012년 가을 (10/11 ~ 10/12, 창원컨벤션센터) |
| 권호 |
37권 2호 |
| 발표분야 |
기능성 고분자 |
| 제목 |
N-(2-hydroxyethyl)succinimide potassium salt-initiated polymerization of EO and block copolymerization of propylene sulfide |
| 초록 |
We have developed a useful method to control the molecular weight of poly(ethylene oxide) by n-butyllithium (n-BuLi)-initiated ring-opening polymerization of ethylene oxide (EO) with tert-butoxide (t-BuOK) in the mixture of benzene/DMSO at 35℃ for 48h. In addition, an alkoxide bearing sodium or potassium counterion is well known to initiate ethylene oxide leading to living polymerization in polar solvent. In this study, N-(2-hydroxyethyl)succinimide was converted to the corresponding potassium alkoxide in THF using potassium naphthalenide, followed by polymerization of ethylene oxide at 50℃ for 12h. After complete polymerization, propylene sulfide was delivered into the reactor via a breakseal technique under high vacuum. The resulting polymer was used as a polymeric stabilizer to stabilize gold nanoparticles from chloroauric acid in ethanol at 40℃. In this presentation the preliminary results will be discussed. |
| 저자 |
최우석, 권난현, 이재혁, 김윤, 양세라, 이지영, 시디크 아부바카, 강호정, 이재열, 김정안
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| 소속 |
경희대 |
| 키워드 |
ethylene oxide; block copolymer; heterothelechelic polymer
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| E-Mail |
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