Synthesis of water-soluble syndiotacticity-rich low molecular weight poly(vinyl alcohol) by solution copolymerization of vinyl pivalate/vinyl acetate in tetrahydrofuran and saponification

Won Seok Lyoo; Jeong Hyun Yeum; Han Do Ghim; Joon Seok Lee; Byung Chul Ji; Nam Sik Yoon; Jae Boo Ha; Jinwon Lee

doi:10.1002/app.12636

Synthesis of water-soluble syndiotacticity-rich low molecular weight poly(vinyl alcohol) by solution copolymerization of vinyl pivalate/vinyl acetate in tetrahydrofuran and saponification

Won Seok Lyoo, Jeong Hyun Yeum, Han Do Ghim, Joon Seok Lee, Byung Chul Ji, Nam Sik Yoon, Jae Boo Ha, Jinwon Lee

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

5 Scopus citations

Abstract

Syndiotacticity-rich low molecular weight poly(vinyl alcohol) (PVA) was synthesized by solution copolymerization of vinyl pivalate (VPi) and vinyl acetate (VAc) in tetrahydrofuran (THF) at low temperature using 2,2′-azobis(2,4-dimethylvaleronitrile) (ADMVN) as an initiator and successive saponification of copoly(VPi/VAc). Effects of initiator and monomer concentrations and polymerization temperature on the polymerization behavior and molecular structure of PVA prepared were investigated. The polymerization rate of VPi and VAc in THF was proportional to the 0.96 power of ADMVN concentration, indicating the heterogeneous nature of THF polymerization. Low-temperature solution copolymerization of VPi and VAc in THF by adopting ADMVN proved to be successful in obtaining water-soluble PVA with number-average degree of polymerization of 180-360, syndiotactic diad content of 56-58%, and ultimate conversion of VPi and VAc into copoly-(VPi/VAc) of over 80%, respectively.

Original language	English
Pages (from-to)	227-232
Number of pages	6
Journal	Journal of Applied Polymer Science
Volume	90
Issue number	1
DOIs	https://doi.org/10.1002/app.12636
State	Published - 3 Oct 2003

Keywords

Copoly(VPi/VAc)
Initiators
Solution copolymerization
Syndiotactic
Water-soluble polymers

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10.1002/app.12636

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Lyoo, W. S., Yeum, J. H., Ghim, H. D., Lee, J. S., Ji, B. C., Yoon, N. S., Ha, J. B., & Lee, J. (2003). Synthesis of water-soluble syndiotacticity-rich low molecular weight poly(vinyl alcohol) by solution copolymerization of vinyl pivalate/vinyl acetate in tetrahydrofuran and saponification. Journal of Applied Polymer Science, 90(1), 227-232. https://doi.org/10.1002/app.12636

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title = "Synthesis of water-soluble syndiotacticity-rich low molecular weight poly(vinyl alcohol) by solution copolymerization of vinyl pivalate/vinyl acetate in tetrahydrofuran and saponification",

abstract = "Syndiotacticity-rich low molecular weight poly(vinyl alcohol) (PVA) was synthesized by solution copolymerization of vinyl pivalate (VPi) and vinyl acetate (VAc) in tetrahydrofuran (THF) at low temperature using 2,2′-azobis(2,4-dimethylvaleronitrile) (ADMVN) as an initiator and successive saponification of copoly(VPi/VAc). Effects of initiator and monomer concentrations and polymerization temperature on the polymerization behavior and molecular structure of PVA prepared were investigated. The polymerization rate of VPi and VAc in THF was proportional to the 0.96 power of ADMVN concentration, indicating the heterogeneous nature of THF polymerization. Low-temperature solution copolymerization of VPi and VAc in THF by adopting ADMVN proved to be successful in obtaining water-soluble PVA with number-average degree of polymerization of 180-360, syndiotactic diad content of 56-58%, and ultimate conversion of VPi and VAc into copoly-(VPi/VAc) of over 80%, respectively.",

keywords = "Copoly(VPi/VAc), Initiators, Solution copolymerization, Syndiotactic, Water-soluble polymers",

author = "Lyoo, {Won Seok} and Yeum, {Jeong Hyun} and Ghim, {Han Do} and Lee, {Joon Seok} and Ji, {Byung Chul} and Yoon, {Nam Sik} and Ha, {Jae Boo} and Jinwon Lee",

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doi = "10.1002/app.12636",

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Synthesis of water-soluble syndiotacticity-rich low molecular weight poly(vinyl alcohol) by solution copolymerization of vinyl pivalate/vinyl acetate in tetrahydrofuran and saponification. / Lyoo, Won Seok; Yeum, Jeong Hyun ; Ghim, Han Do et al.
In: Journal of Applied Polymer Science, Vol. 90, No. 1, 03.10.2003, p. 227-232.

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

TY - JOUR

T1 - Synthesis of water-soluble syndiotacticity-rich low molecular weight poly(vinyl alcohol) by solution copolymerization of vinyl pivalate/vinyl acetate in tetrahydrofuran and saponification

AU - Lyoo, Won Seok

AU - Yeum, Jeong Hyun

AU - Ghim, Han Do

AU - Lee, Joon Seok

AU - Ji, Byung Chul

AU - Yoon, Nam Sik

AU - Ha, Jae Boo

AU - Lee, Jinwon

PY - 2003/10/3

Y1 - 2003/10/3

N2 - Syndiotacticity-rich low molecular weight poly(vinyl alcohol) (PVA) was synthesized by solution copolymerization of vinyl pivalate (VPi) and vinyl acetate (VAc) in tetrahydrofuran (THF) at low temperature using 2,2′-azobis(2,4-dimethylvaleronitrile) (ADMVN) as an initiator and successive saponification of copoly(VPi/VAc). Effects of initiator and monomer concentrations and polymerization temperature on the polymerization behavior and molecular structure of PVA prepared were investigated. The polymerization rate of VPi and VAc in THF was proportional to the 0.96 power of ADMVN concentration, indicating the heterogeneous nature of THF polymerization. Low-temperature solution copolymerization of VPi and VAc in THF by adopting ADMVN proved to be successful in obtaining water-soluble PVA with number-average degree of polymerization of 180-360, syndiotactic diad content of 56-58%, and ultimate conversion of VPi and VAc into copoly-(VPi/VAc) of over 80%, respectively.

AB - Syndiotacticity-rich low molecular weight poly(vinyl alcohol) (PVA) was synthesized by solution copolymerization of vinyl pivalate (VPi) and vinyl acetate (VAc) in tetrahydrofuran (THF) at low temperature using 2,2′-azobis(2,4-dimethylvaleronitrile) (ADMVN) as an initiator and successive saponification of copoly(VPi/VAc). Effects of initiator and monomer concentrations and polymerization temperature on the polymerization behavior and molecular structure of PVA prepared were investigated. The polymerization rate of VPi and VAc in THF was proportional to the 0.96 power of ADMVN concentration, indicating the heterogeneous nature of THF polymerization. Low-temperature solution copolymerization of VPi and VAc in THF by adopting ADMVN proved to be successful in obtaining water-soluble PVA with number-average degree of polymerization of 180-360, syndiotactic diad content of 56-58%, and ultimate conversion of VPi and VAc into copoly-(VPi/VAc) of over 80%, respectively.

KW - Copoly(VPi/VAc)

KW - Initiators

KW - Solution copolymerization

KW - Syndiotactic

KW - Water-soluble polymers

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Synthesis of water-soluble syndiotacticity-rich low molecular weight poly(vinyl alcohol) by solution copolymerization of vinyl pivalate/vinyl acetate in tetrahydrofuran and saponification

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