Synthesis of water-soluble block copolymers containing a new thermosensitive segment with a terminal redox group and their solution properties

Sayaka Kaino; Satoshi Araki; Michihiro Ogura; Naotaka Nakadan; Hisashi Kokubo; Shinichiro Imabayashi; Masayoshi Watanabe

Synthesis of water-soluble block copolymers containing a new thermosensitive segment with a terminal redox group and their solution properties

Sayaka Kaino, Satoshi Araki, Michihiro Ogura, Naotaka Nakadan, Hisashi Kokubo, Shinichiro Imabayashi, Masayoshi Watanabe

Research output: Contribution to conference › Paper › peer-review

Abstract

Block copolymers consisting of a thermosensitive segment, poly(ethyl glycidyl ether), with a terminal redox-active phenothiazine and a hydrophilic segment of PEO were prepared by anionic opening-ring polymerization. The phase transition behavior of an aqueous solution of the block copolymer and its correlation with the redox response of PT group were investigated. The apparent diffusion coefficient of the polymer reveals a maximum at around 15°C, where the thermosensitive segment changes from a coil to a globule. It was shown by the tube-inverted method that a reversible sol-gel transition occurs in the concentration range higher than 35wt%.

Original language	English
Number of pages	1
Publication status	Published - 2005 Dec 1
Externally published	Yes
Event	54th SPSJ Annual Meeting 2005 - Yokohama, Japan Duration: 2005 May 25 → 2005 May 27

Conference

Conference	54th SPSJ Annual Meeting 2005
Country/Territory	Japan
City	Yokohama
Period	05/5/25 → 05/5/27

Keywords

Micelles
Redox response
Sol-gel transition
Thermosensitive polymers

ASJC Scopus subject areas

Engineering(all)

Cite this

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title = "Synthesis of water-soluble block copolymers containing a new thermosensitive segment with a terminal redox group and their solution properties",

abstract = "Block copolymers consisting of a thermosensitive segment, poly(ethyl glycidyl ether), with a terminal redox-active phenothiazine and a hydrophilic segment of PEO were prepared by anionic opening-ring polymerization. The phase transition behavior of an aqueous solution of the block copolymer and its correlation with the redox response of PT group were investigated. The apparent diffusion coefficient of the polymer reveals a maximum at around 15°C, where the thermosensitive segment changes from a coil to a globule. It was shown by the tube-inverted method that a reversible sol-gel transition occurs in the concentration range higher than 35wt%.",

keywords = "Micelles, Redox response, Sol-gel transition, Thermosensitive polymers",

author = "Sayaka Kaino and Satoshi Araki and Michihiro Ogura and Naotaka Nakadan and Hisashi Kokubo and Shinichiro Imabayashi and Masayoshi Watanabe",

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note = "54th SPSJ Annual Meeting 2005 ; Conference date: 25-05-2005 Through 27-05-2005",

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T1 - Synthesis of water-soluble block copolymers containing a new thermosensitive segment with a terminal redox group and their solution properties

AU - Kaino, Sayaka

AU - Araki, Satoshi

AU - Ogura, Michihiro

AU - Nakadan, Naotaka

AU - Kokubo, Hisashi

AU - Imabayashi, Shinichiro

AU - Watanabe, Masayoshi

PY - 2005/12/1

Y1 - 2005/12/1

N2 - Block copolymers consisting of a thermosensitive segment, poly(ethyl glycidyl ether), with a terminal redox-active phenothiazine and a hydrophilic segment of PEO were prepared by anionic opening-ring polymerization. The phase transition behavior of an aqueous solution of the block copolymer and its correlation with the redox response of PT group were investigated. The apparent diffusion coefficient of the polymer reveals a maximum at around 15°C, where the thermosensitive segment changes from a coil to a globule. It was shown by the tube-inverted method that a reversible sol-gel transition occurs in the concentration range higher than 35wt%.

AB - Block copolymers consisting of a thermosensitive segment, poly(ethyl glycidyl ether), with a terminal redox-active phenothiazine and a hydrophilic segment of PEO were prepared by anionic opening-ring polymerization. The phase transition behavior of an aqueous solution of the block copolymer and its correlation with the redox response of PT group were investigated. The apparent diffusion coefficient of the polymer reveals a maximum at around 15°C, where the thermosensitive segment changes from a coil to a globule. It was shown by the tube-inverted method that a reversible sol-gel transition occurs in the concentration range higher than 35wt%.

KW - Micelles

KW - Redox response

KW - Sol-gel transition

KW - Thermosensitive polymers

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M3 - Paper

AN - SCOPUS:33645645023

T2 - 54th SPSJ Annual Meeting 2005

Y2 - 25 May 2005 through 27 May 2005

ER -

Synthesis of water-soluble block copolymers containing a new thermosensitive segment with a terminal redox group and their solution properties

Abstract

Conference

Keywords

ASJC Scopus subject areas

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