| Summary: | 碩士 === 國立臺北科技大學 === 材料及資源工程系碩士班 === 93 === The present study investigates the carbonization process of the Moso Bamboo, one economic bamboo in Taiwan. The carbonized products are then carefully characterized.
From the thermal-gravimetric (TGA) analysis of Moso Bamboo, the temperature ranges for various chemical reactions are located. From 60 to 200C, the water and low-temperature organics were vaporized. From 160oC to 450oC, the decomposition of smoke and Bamboo Vinegar is then taken place. From 280oC to 800oC, the dehydration process is occurred and aryl or tar formed. Only 24% residual carbon is found after the carbonization at 1000oC. The activation energy (E) of Moso Bamboo from 500C to 700C is determined by using the Kissinger equation.
Before carbonization, Moso Bamboo exhibits typical bamboo cell structure. Above 500oC, the cell structure remains. Tubular cavity was about 10 m to 50 m within the thin cell wall. The thick cell wall is less posous, its pore size is about 1 m to 10 m. From the EDS analysis, K and Si elements are found within the carbonized bamboo structure.
The presence of graphite is confirmed by using Raman spectra. The crystal structure is analyzed by using XRD and HRTEM. The morphology of the crystal is observed with HRTEM. The crystal structure of the carbonized product is hexagonal as determined by using the Fourier transfer analysis.
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