| Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2015: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2014: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2013: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
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| Outline of Final Research Achievements |
In this study, surface modification of the cellulose by calcium silicate hydrates was performed. The objective of this study was to verify the effects of surface modification of CNF by calcium silicate hydrates on mechanical properties of composites. Addition of calcium silicate hydrate to the cellulose, and hydrothermal treatment were discussed.
The surface modification could be performed efficiently by the combination of a wet ball-milling process in the presence of silica powder and Ca(OH)2 and a subsequent hydrothermal treatment, giving rise to a formation of tobermorite crystals of calcium silicate hydrate. The surface-treated CNF products exhibited high heat resistance and no irreversible aggregation even after normal heat-drying at 60°C. By an addition of the modified CNF filler to polypropylene-based WPC, the composite materials demonstrated high mechanical strength and high elastic modulus.
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