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 1

Fingerprint

Stars
Ethers
ethers
alcohols
Alcohols
stars
synthesis
molecular weight
Cationic polymerization
Living polymerization
Toluene
Polydispersity
Molecular weight distribution
melamine
Melamine
Ether
initiators
Molecular weight
toluene
cleavage

All Science Journal Classification (ASJC) codes

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

Cite this

Jeon, Hyun Jeong ; Tak, Jeong Pil ; Kim, Jung-Hyun ; Youk, Ji Ho. / Synthesis of isotactic star-shaped poly(vinyl alcohol). In: European Polymer Journal. 2008 ; Vol. 44, No. 8. pp. 2737-2740.
@article{6fcf720427c445ca91165e48b9abdace,
title = "Synthesis of isotactic star-shaped poly(vinyl alcohol)",
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{\%}.",
author = "Jeon, {Hyun Jeong} and Tak, {Jeong Pil} and Jung-Hyun Kim and Youk, {Ji Ho}",
year = "2008",
month = "8",
day = "1",
doi = "10.1016/j.eurpolymj.2008.06.003",
language = "English",
volume = "44",
pages = "2737--2740",
journal = "European Polymer Journal",
issn = "0014-3057",
publisher = "Elsevier Limited",
number = "8",

}

Synthesis of isotactic star-shaped poly(vinyl alcohol). / Jeon, Hyun Jeong; Tak, Jeong Pil; Kim, Jung-Hyun; Youk, Ji Ho.

In: European Polymer Journal, Vol. 44, No. 8, 01.08.2008, p. 2737-2740.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Synthesis of isotactic star-shaped poly(vinyl alcohol)

AU - Jeon, Hyun Jeong

AU - Tak, Jeong Pil

AU - Kim, Jung-Hyun

AU - Youk, Ji Ho

PY - 2008/8/1

Y1 - 2008/8/1

N2 - 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%.

AB - 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%.

UR - http://www.scopus.com/inward/record.url?scp=49149116889&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=49149116889&partnerID=8YFLogxK

U2 - 10.1016/j.eurpolymj.2008.06.003

DO - 10.1016/j.eurpolymj.2008.06.003

M3 - Article

VL - 44

SP - 2737

EP - 2740

JO - European Polymer Journal

JF - European Polymer Journal

SN - 0014-3057

IS - 8

ER -