2014 Fiscal Year Final Research Report
Development of thermochromic teaching materials at which the temperature that the color change takes place can be controlled arbitrarily and which teachers and pupils can readily prepare
| Project/Area Number |
24501047
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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 |
Science education
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| Research Institution | Kanazawa University |
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Principal Investigator |
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Keywords | サーモクロミズム / 化学 / 教材 / 塩化コバルト / 固体アルコール |
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| Outline of Final Research Achievements |
A new reversible thermochromic system applicable to teaching materials is developed. In the reaction system consisting of cobalt(II) chloride hexahydrate and solid alcohol, a pink coloration of the mixture due to CoCl2・6H2O at room temperature is changed to a blue one seems to be due to anhydrous CoCl2, at the same time as solid alcohol melts upon heating. Thus, the temperature at which the color change takes place can be controlled arbitrarily to a certain extent by selecting solid alcohol appropriately.
Using this reaction, teachers and also pupils can readily prepare the ‘thermo-sheet’ by mixing two commercial reagents and laminating the powder obtained.
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| Free Research Field |
錯体化学
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