Phase behaviour and molecular dynamics in the binary system of sodium perchlorate and 1,2-propanediamine |
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| Authors: | Yukio Terashima Kiyoshi Takeda Makoto Honda |
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| Institution: | 1. Department of Natural Science Education, Joint Graduate School, Hyogo University of Teacher Education, Japan;2. Department of Chemistry, Naruto University of Education, 748 Nakajima, Takashima Naruto-cho, Naruto, Tokushima 772-8502, Japan;3. Department of Physics, Naruto University of Education, Japan |
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| Abstract: | The phase and glass transition behaviour in a binary mixture of sodium perchlorate and 1,2-propanediamine {(NaClO4)x(12PDA)1?x, x < 0.40} was investigated by differential scanning calorimetry and Raman scattering measurements. A eutectic point and a peritectic point were found at x = 0.17 and 0.19, respectively. The phase diagram indicates the existence of solvated compounds of (NaClO4)1(12PDA)4 and (NaClO4)2(12PDA)5. The concentration dependence of the glass transition point shows a sigmoid curve implying an underlying anomaly. |
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