聚醯亞胺/非共價性改質多壁奈米碳管之奈米材料的性質探討

Preparation and Characterization of Polyimide/Non-covalent modified Multi-wall Carbon nanotubes Composites.

蔡岳昇(Yue-Sheng Tsai)

指導教授 ： 程耀毅

國立臺北科技大學/工程學院/有機高分子研究所/碩士(2009年)

https://doi.org/10.6841/NTUT.2009.00043

摘要

本研究係針對高分子材料PI藉由奈米碳管的加入，降低其表面電阻並增加導電度，主要是利用奈米碳管作為導電材料導入高分子中，藉以降低PI的電阻和增加其抗靜電的能力，期望達到electrostatic charge (ESC) criterion of thin films (1×108 Ω-cm ) 的標準。本實驗以聚醯胺酸加入多壁奈米碳管並攪拌(Blending)，製備不同比例的PI-奈米碳管複合材料，並探討PI與奈米碳管的相溶性。
本研究中將分別添加未改質奈米碳管和改質奈米碳管二個部份來探討。本實驗利用傅立葉轉換紅外光譜儀（FTIR）及雷曼光譜儀(Raman)來鑑定化學結構，熱重損失分析儀（TGA）探討複材的熱穩定性質，萬能試驗機(Universal Test Machine)來測定複材的機械性質，超絕緣儀(super megohmmeter)測複材的導電性，以及以穿透式電子顯微鏡(TEM)和掃描式電子顯微鏡(SEM)觀察複材的剖面型態及相容性。
改質碳管的部份由FTIR及Raman的結果可知碳管改質是成功的；複材方面，PI-改質奈米碳管複材於TGA熱分析的結果顯示PI的熱穩定性是以0.6wt%的效果最佳，而複材導電性由結果顯示亦是隨著碳管比例的提升而提升，其中碳管含量在1.5wt%時達到了抗靜電1×108 Ω-cm的標準，相容性由TEM、SEM顯示，改質過後的碳管比未改質的碳管相容性較佳。

關鍵字

聚醯亞胺 ； 多壁奈米碳管 ； 奈米複合材料

並列摘要

In this research, we expect to increase conductivity of PI by adding carbon nanotubes. It is mainly because that the carbon nanotubes can reduce resistivity and increase antistatic ability of PI to reach electrostatic charge (ESC) criterion of thin films (1×108 Ω-cm). We have prepared PI-carbon nanotubes composites with different percentage by blending to study the miscibility of carbon nanotubes with PI.
In this study, the effect of unmodified MWNTs and modified MWNTs with PI were also discussed. The structure of modified MWNTs was characterized by Fourier transform infrared spectrometer and Raman spectrometer. The thermal properties of PI-MWNTs nanocomposites were analyzed by Thermogravimetric analysis (TGA). The mechanical properties and hardness of PI-MWNTs nanocomposites were tested by Universal Test Machine. The electrical conductivity properties of PI-MWNTs nanocomposites were obtained by Super Megohmmeter. The morphology and dispersion of PI-MWNTs nanocomposites were observed by Transmission electron microscopy (TEM) and Scanning electron microscopy (SEM).
We concluded that MWNTs were modified successfully from FTIR and Raman observations. The TGA results indicated that the adding MWNTs at 0.6% thermal stability of PI-modified MWNTs nanocomposites were improved most. The electrical conductivity property of PI-modified MWNTs nanocomposites were also increased by adding MWNTs. The electrostatic charge (ESC) criterion of thin films could be achieved when modified-MWNTs nanocomposites was added about 1.8wt%. The results of TEM and SEM indicated that the compatibility of modified-MWNTs nanocomposites was better than that of the unmodified-MWNTs nanocomposites.

並列關鍵字

Polyimide ； Multi-wall carbon nanotubes ； Nanocomposite

參考文獻

[24]張玉玫，聚甲基丙烯酸甲酯/黏土及聚亞醯胺/氧化鋁奈米複合材料之製備與性質研究，中原大學化學研究所碩士論文，中華民國九十二年六月。

[52] 林江珍，”奈米碳管之有機分散性改質與應用”，石油季刊，第41卷，第13期，第47~59頁，2005。

[29] 洪昭南、徐逸明、王宏達，｢奈米碳管結構及特性簡介｣，化工技術，第49

[56]曾志雄，以熔融法製備聚對苯二甲酸乙二酯/多壁奈米碳管複合材料之性質研究，碩士論文，國立台北科技大學有機高分子研究所，台北，2008。

[1] S Iijima, “Helical Microtubules of Graphitic Carbon,” Nature, 354, pp.56 (1991).