Novel evaluation of plasticized potentiometric membranes for ion-selective electrodes by analyses of the proton spin-spin relaxation times T2 with pulsed NMR
| Project/Area Number |
25410155
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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 |
Analytical chemistry
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| Research Institution | Osaka Institute of Technology |
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Principal Investigator |
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| Research Collaborator |
URAHAMA Yoshiaki 兵庫県立大学, 大学院工学研究科, 連携客員教授
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2015: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2014: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2013: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
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| Keywords | イオン選択性電極膜 / パルス法NMR / 核磁気緩和時間 / パルスシークエンス / 可塑化 / 柔剛性 / 緩和スペクトル / パルス法ＮＭＲ / ビス（１２－クラウン－４） / 磁気緩和時間 / ﾊﾟﾙｽ法NMR / 磁気緩和現象 / 横磁気緩和時間 / 緩和ｽﾍﾟｸﾄﾙ / 物性評価 |
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| Outline of Final Research Achievements |
A typical potentiometric polymeric membrane for ion-selective electrodes (ISEs) is composed of 1-7 wt% ionophore, 30 wt% poly(vinyl chloride) as the polymer, 66-67 wt% membrane solvent, and 1-2 wt% salt additive. Although ionophores mainly discriminate ions in a potentiometric polymeric membrane, all the components of the potentiometric polymeric membrane influence their ion-sensing behavior. Among the various physical properties of ISEs, plasticization of the potentiometric polymeric membranes will influence their ion-sensing behavior. Nevertheless, a suitable and valid analysis method to evaluate the plasticization of potentiometric polymeric membranes has yet to be developed. In this study, we proposed a novel method for the evaluation of the potentiometric polymeric membranes by analyses of the proton spin-spin relaxation times T2 with pulsed NMR.
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Report
(4 results)
Research Products
(9 results)
