Macromolecular Research

The Polymer Society of Korea (한국고분자학회)
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Synthesis and Characterization of Poly(vinyl alcohol-b-styrene) via Atom Transfer Radical Polymerization and Saponification

  • Li, Guang-Hua (Center for Advanced Functional Polymers, Department of Fiber & Polymer Engineering, Graduate School of Advanced Materials and Chemical Engineering, Hanyang University) ;
  • Cho, Chang-Gi (Center for Advanced Functional Polymers, Department of Fiber & Polymer Engineering, Graduate School of Advanced Materials and Chemical Engineering, Hanyang University)
  • Published : 2002.12.01
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Abstract

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 effient 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 $^{\circ}C$. The poly(vinyl pivalate) macroinitiator, poly(VPi-b-St), poly(VA-b-St) were characterized by GPC, FT-IR and $^1$H-NMR. And the analysis showed that integrity of the block copolymer was maintained during saponification reaction.

Keywords

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