2015 Fiscal Year Final Research Report
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 |
Section | 一般 |
Research Field |
Analytical chemistry
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Research Institution | Osaka Institute of Technology |
Principal Investigator |
MORIUCHI TAKAYO (川上隆代) 大阪工業大学, 工学部, 准教授 (60288751)
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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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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 |
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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Free Research Field |
分析化学
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