| 학회 |
한국고분자학회 |
| 학술대회 |
2009년 봄 (04/09 ~ 04/10, 대전컨벤션센터) |
| 권호 |
34권 1호 |
| 발표분야 |
기능성 고분자 |
| 제목 |
Improving water-solubility of chitosan using functionalized PEO |
| 초록 |
Chitosan having high molecular weight and low solubility in aqueous solvent. To improve its water-solubility, the molecular weight of chitosan should be reduced or acetylated. To prepare water-soluble chitosan by using poly(ethylene 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 using trimellitic anhydride chloride (TMAC) resulting in the formation of ω-anhydride terminated PEO. Chitosan-g-PEO was obtained from the reactions of authentic chitosan with the ω-anhydride PEO in aqueous alcoholic solution at 40℃ for 24h. The water-solubility of chitosan depending on the grafting yield of PEO was studied in this study. We will report the results for these experimentals. |
| 저자 |
이상미, 최진희, 김태환, 김근석, 김진흥, 김정안
|
| 소속 |
경희대 |
| 키워드 |
chitosan; PEO; t-BuOK; n-Butyllithium; TMAC
|
| E-Mail |
|
