由於奈米碳管具有許多優異之材料、機械、熱傳及電學特性，近年來引起廣泛的研究擁，使其成為複合材料補強材的絕佳候選人。而導電高分子聚苯胺(Polyaniline)、聚塞吩(Polythiophene)具有高分子質輕且導電度高的特性，同時又容易合成等性質。如果能將導電高分子與具有優異性質的奈米碳管相混合，形成具有高分子功能性之奈米複合材料。 本研究將分兩部分來探討，第一部份將多層奈米碳管(MWNT)放入混酸溶液(硫酸:硝酸=3:1)中，以超音波震盪使奈米管懸浮並將奈米碳管表面改質，利用混酸溶液的氧化作用使得奈米碳管表面(c-MWNT)改質成帶有羧酸基(-COOH)以及氫氧基(-OH)，將苯胺單體吸附在改質的奈米碳管表面用，用原位聚合法(in-situ)將表面單體聚合而成聚苯胺/羧酸化奈米碳管、聚苯胺/奈米碳管複合材料。第二部份將多層奈米碳管放入氯仿中，加入塞吩後利用原位聚合法將表面單體聚合而成聚塞吩/奈米碳管複合材料。 用掃描式電子顯微鏡(SEM)和穿透式電子顯微鏡(TEM)觀察複合材料的結構，用紅外面光譜(FT-IR)與紫外光-可見光光譜(UV-VIS)來分析複合材料的官能基和複合體中摻雜的效果，使用熱分析儀(TGA)來測量複合材料的熱穩定性，以及用四點探針來量測導電度。 Carbon nanotubes (CNTs) have stimulated wide research activities in recent years because of the merits of their special material,mechanical, thermal and electric properties. so it is one of the best choice for reinforcements. polyaniline and polythiophene(Poly(3-hexylthiophene)) are both conducting polymers, contains good processability, excellent environmental stability, and reversible control of conductivity, If we can mix conducting polymers and CNTs of excellent nature, arise from a composite of functionalizing. This research will divide into two parts, First,Multi-wall carbon nanotube（MWNT）was functionalizing in a sulfuric and nitric mixed acids under ultrasonic vibration, and MWNT of surface contains carboxyl group and hydroxyl group. The carbo-xylated MWNT was reacted with aniline to Polyaniline/MWNT and Polyaniline/c-MWNT composites fabricated by in situ. Part two, Composites of MWNT embedded in the thiophene were fabricated by in situ of the P3HT/MWNT composites mixture dissolved in chloroform. These nanocomposite materials were characterized by Trans-mission electron microscopy (TEM), scanning electron microscopy(SEM), UV-VIS spectra, Fourier-transform infared（FT-IR）,thermal analysis (TGA) , Four-point probe.
