| 학회 |
한국고분자학회 |
| 학술대회 |
2009년 가을 (10/08 ~ 10/09, 광주과학기술원 오룡관) |
| 권호 |
34권 2호 |
| 발표분야 |
고분자 합성 |
| 제목 |
Controlled Synthesis of Polymer Brushes onto Nano-Silica |
| 초록 |
Alkoxysilane-functionalized polyisoprene was synthesized in advance for grafting polymer brush onto silica particle using 'grafting onto' method. Over 90% functionalization yield was obtained when using tetrapropyl orthosilicate(TPOS) as a chain-end functionalization agent. The concentration was in the ratio of 5:1 of [TPOS] and [Li]. The range of molecular weight of polymer brushes onto silica particle were 2,000~10,000g/mol, respectively and the grafting weight percent of polymer brush were 20% and 40~50%, respectively. The surface characterizations of the synthesized particle with polymer brush were analyzed by SEM. The molecular weights and the molecular weight distributions of the synthesized polymer brushes were measured using GPC. The microstructures and the compositions were characterized by 1H-NMR. TGA was used to confirm the grafting weight of polymer brush. |
| 저자 |
박종혁, 김태중, 정권영, 지상철, 고선덕, 이범재
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| 소속 |
충남대 |
| 키워드 |
Grafting onto; polymer brush; grafting degree; grafting density; Alkoxysilane-functionalized; Tetrapropyl orthosilicate(TPOS); polyisoprene; synthisis
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| E-Mail |
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