填充型導電高分子其高分子本身並不導電，藉由加入導電的添加物填充於高分子中，以使其具導電性。本論文利用球磨混合及熱壓成型的方法，製備多壁奈米碳管－聚對苯二甲酸乙烯酯與多壁奈米碳管－聚醯胺奈米複合材料，研究後觀察到兩者在電性上都有顯著的增益，且Percolation Threshold皆發生在碳管濃度僅有1 wt%的地方，説明了此種合成法僅需微量的碳管，電性上就能達到很大的提升，並發現此兩種奈米複合材料其溫度─電阻的關係為半導體的性質，而且還具有回覆性，所以此研究不僅可應用在導電材料上，還可以應用在溫度感測器上。
比較起來，利用六氟異丙醇與二氯甲烷的混合溶劑，將聚對苯二甲酸乙烯酯溶掉後，再添入多壁奈米碳管，此法合成的奈米複合材料其電性表現不佳，而且也不穩定，需要加到高濃度的碳管（至少約15 wt%），電性才能有明顯的改善。
為了瞭解界面活性劑對多壁奈米碳管在分散上的影響，本研究中利用十二烷基磺酸鈉的水溶液當分散劑，經實驗後確認了此界面活性劑讓多壁奈米碳管獲得了“溶解”於溶液中的特性，並進一步利用聚乙烯醇當母體來觀察碳管分散的情況。

The polymer of extrinsically conducting polymer (ECP) can not conduct electricity, so it needs to add an electricity conducting filler to make it conduct electricity. In this study, Multi wall carbon nanotube - Poly ethylene terephthalate (MWNT-PET) and Multi wall carbon nanotube -Polyamide 6 (MWNT-PA6) can be fabricated to become Nano composites with the synthesis: ball-milling then heating and pressurizing. Based on the observation, MWNT-PET and MWNT-PA6 can greatly improve in electric properties. Furthermore, Percolation Threshold occurred when the concentration of MWNT is only 1 wt%, and it explains the synthesis can successfully promote the electric properties with low concentration of MWNT. In addition, the synthesis discovers that the temperature and resistance relationship between these two Nano Composites has not only semi-conductor property but also recoverable property. Therefore, the study has shown a valuable method which can be used in conductive polymer and temperature sensor.
Comparing to the synthesis of ball-milling then heating and pressurizing, using the mixed solvent of Hexafluoroisopropanol (HFIP) and CH2Cl2 to dissolve PET, and then adding MWNT to it can synthesize a nano composite. However, the nano composite represented its weakness and unstableness in electric properties. Thus, in order to solve the above two problems and effectively promote the electric properties of the nano composite, the nano composite needs an addition of high concentrated MWNT (at least 15 wt %).
Finally, this study has shown the effect of using a surfactant to disperse MWNT by using the solution of Sodium dodecyl sulfate (SDS) as a dispersant. During the process of the experiment, the surfactant was assured to make MWNT have the solubility in solution. Then, Polyvinyl alcohol (PVA) can be used as the matrix to closely observe the phenomenon of the dispersion of MWNT.

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