| 학회 | 한국화학공학회 |
| 학술대회 | 2013년 봄 (04/24 ~ 04/26, 광주 김대중컨벤션센터) |
| 권호 | 19권 1호, p.699 |
| 발표분야 | 재료 |
| 제목 | Study on synthesis of GMA-terminated PLLA and its thermal/mechanical properties |
| 초록 | In this study, glycidyl methacrylate-terminated poly(L-lactide) (GMA-PLLA) with an improved thermal and mechanical properties was synthesized for packaging and construction materials. The synthesis of GMA-PLLA was performed by two steps as follows: First, PLLA was synthesized by using 50 g of L-lactide, 0.1 wt% initiator (1-dodecanol), and 0.5 wt% catalyst of [tin(II)-bis-2-ethylhexanoate{Sn(Oct)2}] at 140oC. Its number average molecular weight (Mn) and melting temperature (Tm) were about 193,000 g/mol and 180 oC, respectively. Second, GMA-PLLA was obtained by polymerization of 50 g-PPLA, 11 g- GMA and 0.1∼0.3 wt% zinc catalyst. The value of tanδ was 0.740 at 82 oC, which was the lowest. The synthesized GMA-PLLA had number average molecular weight of 43,000 g/mol and melting temperature of 193 ℃. In comclusion, it was found that GMA-terminated PLLA was higher than PLLA in thermal and mechanical properties. It could be used for packaging and construction materials. |
| 저자 | 김문선, 이상은, 성태창, 김병우 |
| 소속 | 성균관대 |
| 키워드 | PLLA-GMA; Terminated polymerization; Sn/Zn catalysts; Thermal property; Mechanical property |
| 원문파일 | 초록 보기 |
