| 학회 |
한국고분자학회 |
| 학술대회 |
2015년 봄 (04/08 ~ 04/10, 대전컨벤션센터) |
| 권호 |
40권 1호 |
| 발표분야 |
고분자합성 |
| 제목 |
Synthesis and characterizations of Poly(Vinyl acetate)-block-Poly(L-Lactide) PVAc-b-PLLA block Copolymer using HPEXP dual initiator |
| 초록 |
The synthesis of well-defined poly(vinyl acetate)-b-Poly(L-lactide) (PVAc-b-PLLA) by combination of xanthate mediated reversible addition-fragmentation chain transfer (RAFT) polymerization and ring-opening polymerization (ROP) using super base 1, 8-diazabicyclo 5.4.0 undec-7-ene (DBU). We have synthesized bifunctional initiator 4-(Hydroxymethyl) phenyl 2-Ethyl Xanthate-propanoate (HPEXP)) with -OH and a xanthate group. bifunctional initiator was characterized by 1H and 13C NMR spectroscopy. In bifunctional initiator, xanthate group was used as a RAFT agent to polymerization of VAc and –OH group used as ROP initiator to initiate polymerization of poly(L-lactide), Thus, HPEXP initiator was first used to control radical polymerization of VAc, followed by ring opening polymerization of L-Lactide, The well-defined PVAc-b-PLLA block copolymers was obtained. The synthesized block copolymers of PVAc-b-PLLA were confirmed by gel permeation chromatography (GPC) and 1H NMR. |
| 저자 |
Avnish Kumar Mishra, 박지철, Vincent, 장상신, 김진곤
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| 소속 |
POSTECH |
| 키워드 |
Block Copolymer; RAFT; ROP; Dual-initiator; PVAc; PLLA
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| E-Mail |
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