聚咇咯是一種常應用於生物感測器、電容及固態元件的導電高分子。碳球可作為改善高分子複合材料電性及熱性之填料。本研究是以維他命C為前驅物，利用水熱法製備碳球並以此作為聚咇咯複合材料之填料。為了瞭解碳球對於聚咇咯複合材料熱導係數及電導係數之影響，碳球首先進行鍛燒除去內部或外部的有機物質來提升聚咇咯複合材料的k和σ值。結果發現鍛燒後碳球之熱導係數從1.590 W/m K提高至10.150 W/m K；電導係數則從10-13 S/cm提高至20.05 S/cm。接著以物理摻混法或原位聚合法製備碳球/聚咇咯複合材料，另以商業化碳球（Vulcan XC-72）/聚咇咯複合材料作為對照組。最後以自製的熱導計測量樣品之熱導係數；以儀器測量樣品之電導係數。結果指出以原位聚合法製備之碳球/聚咇咯複合材料表現出較佳的熱導與電導性質。
Polypyrrole (PPy) is a conducting polymer frequently used in biosensors, capacitors and solid-state devices. Carbon sphere (CS) can be used as a reinforcing filler to improve the thermal or electrical properties of a polymer matrix. In this study, hydrothermal synthesis of CS from vitamin C was taken as the filler of PPy composites. In order to understand the influence of CS on the thermal or electrical conductivity of PPy composites, CS was firstly post treatment by calcination. It was found the thermal conductivity of calcined CS increased from 1.590 W/m K to 10.150 W/m K and the electrical conductivity of calcined CS increased from 10-13 S/cm to 20.05 S/cm. Next, CS/PPy composites was made by physical blending or in-situ polymerization, with a commercial carbon sphere (Vulcan XC-72)/PPy composites as a control. Thermal conductivity of each sample was measured by home-made thermal conductivity meter, and using the instrument to obtain the electrical conductivity of each sample. Finally, the results indicate the PPy composites prepared by in-situ polymerization exhibit the better thermal and electrical properties.
