| 학회 |
한국화학공학회 |
| 학술대회 |
2010년 가을 (10/21 ~ 10/22, 대전컨벤션센터) |
| 권호 |
16권 2호, p.1260 |
| 발표분야 |
고분자 |
| 제목 |
Polymerization of Vinyl Acetate in Supercritical CO2 Using Poly(vinylacetate)-based MacroRAFT Agents |
| 초록 |
Controlled living polymerization of vinyl acetate (VAc) by reversible addition-fragmentation chain-transfer (RAFT) was studied in supercritical carbon dioxide (scCO2). Various poly(vinyl acetate) (PVAc) bearing xanthate groups were used as macroRAFT agents. Solubility of the RAFT agents in bare scCO2 and monomer-scCO2 mixture was investigated by cloud point measurement. Polymerization with an aid of the RAFT agents was carried out in scCO2. Effect of reaction time, concentration of RAFT agent, and structure of RAFT agent on the yield, molecular weight, and polydispersity index (PDI) of PVAc were studied. As far as the result is concerned, the macroRAFT agents were well soluble in both scCO2and the mixture and higher solubility was found in the case of mixture as monomer played a role as cosolvent. Either molecular weight and PDI increased linearly with increasing yield. Increase in concentration of RAFT agent resulted in the decrease in the molecular weight and PDI. Effect of the molecular weight of RAFT agent was also investigated. |
| 저자 |
Quang Long Pham1, Van Hoa Nguyen2, Yuvaraj Haldorai1, 심재진2
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| 소속 |
1School of Display and Chemical Engineering, 2Yeungnam Univ. |
| 키워드 |
Poly(vinyl acetate); RAFT; Xanthate; Supercritical CO2
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| E-Mail |
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| 원문파일 |
초록 보기 |
