| 학회 |
한국고분자학회 |
| 학술대회 |
2009년 봄 (04/09 ~ 04/10, 대전컨벤션센터) |
| 권호 |
34권 1호 |
| 발표분야 |
기능성 고분자 |
| 제목 |
Metal nanoparticles stabilized by pH sensitive PEO-based block copolymers |
| 초록 |
Synthesis of water-soluble block copolymers exhibiting pH-responsive phase transition behaviors was carried out via transformation reaction. n-Butyllithium-initiated ring-opening polymerization of ethylene oxide was first performed in the mixture of benzene and DMSO at 40 ℃, followed by chain-end functionalization using proper electrophiles. Among them, the PEO-based macroinitiator was converted into RAFT (reversible addition fragmentation chain transfer) agent carrying a dithioester group. Using the RAFT agent and AIBN, RAFT radical polymerization of sulfadimethoxinyl methacrylamide (SDMA) and N-phenylmaleimide (N-PMI) was successfully performed in toluene at 90 ℃ for 6 h. Deimidation of N-PMI unit was carried out in the resulting poly(ethylene oxide) -b- poly(SDMA -co- MAc). The resulting pH sensitive block copolymer was used as a polymer stabilizer for preparation of metal oxide nanoparticles such as ZnO or Fe3O4. All the results for these experiments will be presented. |
| 저자 |
김태환1, 김근석1, 김보리2, 이정화1, 조영준1, 김정안1
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| 소속 |
1경희대, 2한국과학기술(연) |
| 키워드 |
PEO; Anionic polymerization; Transformation reaction; RAFT; MAc; N-PMI; SDMA; nanoparticle
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| E-Mail |
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