Functionalization of Carbon Nanotubes and Formation of Nanocomposites with Poly (ethylene terephthalate) with Measurements of Electrical and Thermal Conductivity

奈米碳管之官能化及混入高分子材料製成奈米復合材料後之電性和熱導系數之量測

莊晏惠(Y. H. Juang) ； 郭正雍(C. Y. Kuo) ； 劉建惟(C. W. Liu) ； 林其華(C. H. Lin) ； 高騏(C. Gau)

《機械技師學刊》 7卷3期 (2014/11) Pp. 1-7

https://doi.org/10.6208/JPME-2014-11-01

摘要

摻入聚合物材料的奈米碳管（CNTs）做成不同的官能化來改善CNTs的分散性和增強奈米複合材料的許多特性。CNTs的官能化一般是採用硫酸混硝酸，亞硫酸基氯化物與二甲基甲酰胺，再混以十二烷基硫酸鈉溶液（SDS）。本文採用的CNTs官能化法，是最常用的硫酸和硝酸混合的氧化過程，經修正後，顯示該碳管在有機溶劑中具有良好的分散性。分析儀器，如透射電子顯微鏡（TEM）、拉曼光譜以及傅立葉轉換紅外光譜，用來量測官能化之奈米碳管的特性。過程中，因為氧化過程使奈米管的嚴重損害降為最小。因此，無論是電導率和熱導率的測量顯示奈米複合材料摻入官能化奈米碳管，該碳管使用修正後的氧化過程，具有優異的電導率和熱導率。

關鍵字

奈米碳管功能化（functionalization） ； 奈米複合材料 ； 電導率和熱導率

並列摘要

Different functionalizations of carbon nanotubes (CNTs) have been made to blend into polymer materials to improve dispersion of CNTs and strengthen many properties of the nanocomposite. Functionalization of CNTs using sulfuric acid mixed with nitric acid, thionyl chloride mixed with dimethylformamide, and sodium dodecyl sulfate (SDS) solution has been adopted. The most frequent method of functionalization of CNTs using oxidation process by sulfuric acid mixed with nitric acid was modified to show its good dispersion capability in organic solvents. Analytical instruments, such as TEM, Raman spectroscopy and FTIR, are used to characterize the functionalied CNTs. The severe damage of the nanotube surface due to the oxidation process was shown to have been minimized. Therefore, both the electrical and the thermal conductivity measurements indicate that the nanocomposite blended with the functionalized CNTs using the modified oxidation process has a superior conductivity both electrically and thermally.

並列關鍵字

Functionalizaton of CNTs ； Nanocomposites ； Electrical and Thermal Conductivity