Molecular design of the hydrophobic interactions for stimuli-responsive polymers
| Project/Area Number |
26410137
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Polymer chemistry
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| Research Institution | Fukuoka University |
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Principal Investigator |
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2016: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2015: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2014: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Keywords | 水系刺激応答性高分子 / 疎水性相互作用 / マルチブロック高分子 / PEO-PPO交互マルチブロック / PEO-PPO 交互マルチブロックコポリマー / テレケリックpoly(oxazoline) / 相分離 / ヒステリシス / 高分子ミセル / 高分子末端制御 / 感熱応答性 / 立体制御 |
|---|
| Outline of Final Research Achievements |
The micellization and phase behavior of the PEO-PPO AMB copolymers in water have been investigated. The turbidity measurement has been carried out for monitoring the cloud point (Tc). The concentration dependence of Tc clearly indicates that the polymer aqueous solution undergoes the phase separation with a lower critical solution temperature. The fluorescent probe method suggests that the 20 nm aggregates have the hydrophobic core like a micelle. The micellization entropy suggested that the hydrophobic interaction between PPO blocks induces the thermoresponsiveness of the PEO-PPO AMB copolymers in water. Hysteresis of the phase change temperature (Tpc) of stereo-controlled poly(N-isopropylacrylamide) (PNiPAm) in aqueous solutions has also investigated. It is found for PNiPAm with the 46 % mess content (m) that the difference between Tpc(h) and Tpc(c) becomes ignorable when the polymer concentration goes down to 0.01 wt%, while that for PNiPAm with m=55 % remains to be 5 °C.
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Report
(4 results)
Research Products
(58 results)
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[Journal Article] Solvent-Dependent Properties and Higher-Order Structures of Aryl Alcohol + Surfactant Molecular Gels2016
Author(s)
S. Katsube, M. Kinoshita, K. Amano, T. Sato, Y. Katsumoto, T. Umecky, T. Takamuku, T. Kaji, M. Hiramoto, Y. Tsurunaga, K. Nishiyama
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Journal Title
Langmuir
Volume: 32
Issue: 17
Pages: 4352-4360
DOI
Related Report
Peer Reviewed
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[Book] エッセンシャル化学2015
Author(s)
尾崎 幸洋, 勝本 之晶, 森田 成昭, 山本 茂樹, 森澤 勇介, 佐藤 春実
Total Pages
195
Publisher
培風館
Related Report
