Synthesis and characterization of poly(vinyl alcohol-b-styrene) via atom transfer radical polymerization and saponification

Guang Hua Li, Chang Gi Cho

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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°C. 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.

Original languageEnglish
Pages (from-to)339-344
Number of pages6
JournalMacromolecular Research
Issue number6
Publication statusPublished - 2002 Jan 1



  • Atom transfer radical polymerization
  • Block copolymer
  • Poly(vinyl alcohol-b-styrene)
  • Poly(vinyl pivalate-b-styrene)
  • Radical telomerization
  • Styrene
  • Vinyl pivalate

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