| Budget Amount *help |
¥17,030,000 (Direct Cost: ¥13,100,000、Indirect Cost: ¥3,930,000)
Fiscal Year 2020: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2019: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2018: ¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
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| Outline of Final Research Achievements |
Thermodynamically driven principles for the self-organization of fillers in phase-separated structures in epoxy polymer alloy/filler dispersion composites with a co-continuous phase structure have been explored. The location of silver fillers and electrical conductivity were investigated for two epoxy polymer alloys forming co-continuous structures (a reaction-induced phase-separated system with a structural period of a few micrometers and a self-assembled phase-separated system with a structural period of several tens of nanometers). In both systems, silver fillers were selectively placed in the component with the closest Hansen solubility parameter distance, proving that the decrease in interfacial free energy was the driving force determining the microstructure. The threshold of the amount of silver fillers required for achieving the conductivity was smaller for co-continuous structures of several tens of nanometers in size than for those of a few micrometers.
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