Synthesis of isotactic star-shaped poly(vinyl alcohol)

Hyun Jeong Jeon, Jeong Pil Tak, Jung Hyun Kim, Ji Ho Youk

Research output: Contribution to journalArticle

Abstract

Isotactic 6-armed star-shaped poly(vinyl alcohol) (PVA) with a narrow molecular weight distribution was successfully prepared by the living cationic polymerization of 6-armed star-shaped poly(tert-butyl vinyl ether) (PTBVE) and subsequent acidic ether cleavage. The PTBVE was synthesized using hexa(chloromethyl) melamine (HCMM) as a hexafunctional initiator and ZnI2 or ZnCl2 as an activator in toluene/MC (1/1 v/v) at -70 °C. A better living stability of PTBVE was obtained in the ZnCl2 activator system. The number average molecular weight and the polydispersity index of the 6-armed star-shaped PTBVE polymerized with ZnCl2 at -70 °C for 24 h were 156,000 g/mol and 1.47, respectively. The fraction of the mm sequence of the resulting PVA was 52%.

Original languageEnglish
Pages (from-to)2737-2740
Number of pages4
JournalEuropean Polymer Journal
Volume44
Issue number8
DOIs
Publication statusPublished - 2008 Aug

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)
  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

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