화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Macromolecular Research, Vol.10, No.6, 339-344, December, 2002
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Synthesis and Characterization of Poly(vinyl alcohol-b-styrene) via Atom Transfer Radical Polymerization and Saponification
Guang Hua Li, and Chang Gi Cho†
  • Center for Advanced Functional Polymers , Department of Fiber & Polymer Engineering, Graduate School of Advanced, Hanyang University, 17 Haengdang-dong, Seongdong-gu, Seoul 133-791, Korea
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Poly(vinyl alcohol-b-styrene) (poly(VA-b-St)) diblock copolymer containing high syndiotactic poly(vinyl alcohol) (PVA) was synthesized by the saponification of poly(vinyl pivalate-b-styrene) (poly(VPi-b-St)). For the block copolymer, poly(vinyl pivalate) (PVPi) with trichloromethyl end group was obtained via telomerization of vinyl pivalate with carbon tetrachloride as a telogen and 2,2-azobisisobutyronitrile (AIBN) as an initiator. Then resulting poly(vinyl pivalate) with trichloromethyl end group was used as an efficient macroinitiator for the synthesis of poly(VPi-b-St) using atom transfer radical polymerization (ATRP) in the presence of CuCl/2,2'-bipyridine at 130 ℃. The poly(vinyl pivalate) macroinitiator, poly(VPi-b-St), poly(VA-b-St) were characterized by GPC, FT-IR and 1H-NMR. And the analysis showed that integrity of the block copolymer was maintained during saponification reaction.
Keywords:radical telomerization;vinyl pivalate;atom transfer radical polymerization;styrene;block copolymer;poly(vinyl alcohol-b-styrene);poly(vinyl pivalate-b-styrene)
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