Synthesis of isotactic star-shaped poly(vinyl alcohol)

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

doi:10.1016/j.eurpolymj.2008.06.003

Synthesis of isotactic star-shaped poly(vinyl alcohol)

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

Department of Chemical and Biomolecular Engineering

Research output: Contribution to journal › Article › peer-review

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 language	English
Pages (from-to)	2737-2740
Number of pages	4
Journal	European Polymer Journal
Volume	44
Issue number	8
DOIs	https://doi.org/10.1016/j.eurpolymj.2008.06.003
Publication status	Published - 2008 Aug

Bibliographical note

Funding Information:
The authors of this study would like to thank the Korea Science and Engineering Foundation (KOSEF) for sponsoring this research through the SRC/ERC Program of MOST/KOSEF (R11-2005-065) and the Ministry of Commerce, Industry and Energy (MOCIE) through the project of NGNT (No. 10024135-2005-11).

All Science Journal Classification (ASJC) codes

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

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10.1016/j.eurpolymj.2008.06.003

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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 Kim, {Jung Hyun} and Youk, {Ji Ho}",

note = "Funding Information: The authors of this study would like to thank the Korea Science and Engineering Foundation (KOSEF) for sponsoring this research through the SRC/ERC Program of MOST/KOSEF (R11-2005-065) and the Ministry of Commerce, Industry and Energy (MOCIE) through the project of NGNT (No. 10024135-2005-11).",

year = "2008",

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doi = "10.1016/j.eurpolymj.2008.06.003",

language = "English",

volume = "44",

pages = "2737--2740",

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AU - Jeon, Hyun Jeong

AU - Tak, Jeong Pil

AU - Kim, Jung Hyun

AU - Youk, Ji Ho

N1 - Funding Information: The authors of this study would like to thank the Korea Science and Engineering Foundation (KOSEF) for sponsoring this research through the SRC/ERC Program of MOST/KOSEF (R11-2005-065) and the Ministry of Commerce, Industry and Energy (MOCIE) through the project of NGNT (No. 10024135-2005-11).

PY - 2008/8

Y1 - 2008/8

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%.

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M3 - Article

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JO - European Polymer Journal

JF - European Polymer Journal

IS - 8

ER -

Synthesis of isotactic star-shaped poly(vinyl alcohol)

Abstract

Bibliographical note

All Science Journal Classification (ASJC) codes

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