| 학회 |
한국고분자학회 |
| 학술대회 |
2007년 봄 (04/12 ~ 04/13, 제주 ICC) |
| 권호 |
32권 1호 |
| 발표분야 |
고분자 합성 |
| 제목 |
Synthesis and characterization of water-soluble chitosan using anhydride- terminated poly(ethylene oxide) and its use for preparation of iron oxide nanoparticles |
| 초록 |
We have studied to improve the water-solubility of chitosan by simple methods. To prepare water-soluble chitosan modified by using poly(ethyene oxide) (PEO), anhydride-terminated PEO was first synthesized. n-Butyllithium-initiated ring-opening polymerization of ethylene oxide with t-BuOK has been successfully performed in the mixture of dimethylsulfoxide (DMSO) and benzene like a living manner at 40℃, followed by chain-end functionalization resulting in the formation of ω-anhydride PEO. Chitosan was depolymerized by using nitrous acid deaminative cleavage to obtain a low molecular weight (Mw). Chitosan -g- PEO was synthesized by the reaction of chitosan with ω-anhydride PEO and phthalic anhydride in dimethylformamide (DMF) at 130℃ for 8h. We were successfully prepared magnetite (Fe3O4) nanoparticles using Chitosan -g- PEO as a surfactant. |
| 저자 |
고다현1, 최송이1, 김경민1, 전희정1, 박형수2, 김정안1, 박건희1
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| 소속 |
1경희대, 2서강대 |
| 키워드 |
chitosan; PEO
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| E-Mail |
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