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Thermoresponsive Properties of Sugar Sensitive Copolymer of N-isopropylacrylamide and 3-(Acrylamide) phenylboronic Acid
http://hdl.handle.net/10458/781
http://hdl.handle.net/10458/7818abb33b1-f3ed-440c-92c2-614ac0279432
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
author11.pdf (96.5 kB)
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||||||||||
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| 公開日 | 2007-10-19 | |||||||||||||
| タイトル | ||||||||||||||
| タイトル | Thermoresponsive Properties of Sugar Sensitive Copolymer of N-isopropylacrylamide and 3-(Acrylamide) phenylboronic Acid | |||||||||||||
| 言語 | en | |||||||||||||
| 言語 | ||||||||||||||
| 言語 | eng | |||||||||||||
| キーワード | ||||||||||||||
| 言語 | en | |||||||||||||
| 主題Scheme | Other | |||||||||||||
| キーワード | polyol-boronate interaction, poly[(N-isopropylacrylamide)-co-(3-(acrylamido)phenylboronic)], stimuli-sensitive polymers, sugar sensitive polymers | |||||||||||||
| 資源タイプ | ||||||||||||||
| 資源タイプ | journal article | |||||||||||||
| 著者 |
塩盛, 弘一郎
× 塩盛, 弘一郎
WEKO
5570
× Ivanov, A. E.× Galaev, I. Y.× Kawano, Y.× Mattiasson, B. |
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| 抄録 | ||||||||||||||
| 内容記述タイプ | Abstract | |||||||||||||
| 内容記述 | The copolymer of N-isopropylacrylamide and 3-（acrylamido） phenylboronic acid （82:18, Mn = 47000 g/mol） was prepared by free radical polymerization. The copolymer showed typical thermal precipitation behavior in aqueous solutions, its precipitation temperature （TP） being increased from 23 ーC to 32 ーC by increasing pH from 6.5 to 9.7, due to ionization of the phenylboronate units. The pKa was evaluated as 8.9ア0.1 from the effect of pH on TP. At pH>9, i.e. in the anionic form of the copolymer, TP was affected by very low concentration of glucose （5.6 mM, DTP = 1-1.5 ーC）, due to the complex formation with a high binding constant. At higher concentration of polyols （560 mM, pH>8） the increase of TP was maximal for the copolymer complexes with fructose （7-10 ーC） and decreased in the order: fructose>glucose サ mannitol>pentaerythritol>galactose>Tris >glycerol. Di- and oligosaccharides （lactose, sucrose and dextran） caused a slight increase of TP at pH 7.5-8.7 while no effect was observed at pH>9. Isothermal dissolution of the copolymer suspension in water （27 ーC, pH 8.5） was possible in the presence of fructose or mannitol but required higher concentrations （1.4-3.6x103 mM） as compared to those which enabled the shift of TP in the soluble copolymer. The dissolution rate increased with fructose concentrations. | |||||||||||||
| 言語 | en | |||||||||||||
| 書誌情報 |
en : Macromolecular chemistry and physics 巻 205, p. 27-35, 発行日 2004-01 |
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| 出版者 | ||||||||||||||
| 出版者 | John Wiley & Sons | |||||||||||||
| 言語 | en | |||||||||||||
| ISSN | ||||||||||||||
| 収録物識別子タイプ | ISSN | |||||||||||||
| 収録物識別子 | 10221352 | |||||||||||||
| 書誌レコードID | ||||||||||||||
| 収録物識別子タイプ | NCID | |||||||||||||
| 収録物識別子 | AA10984295 | |||||||||||||
| 著者版フラグ | ||||||||||||||
| 出版タイプ | AM | |||||||||||||
