應用界面活性劑改質多壁奈米碳管/聚醯亞胺奈米複材之研究

Study on Surfactant-Modification of Multi-Wall Carbon Nanotubes/Polyimide Nanocomposite

廖唯善(Shan-Wei Liao)

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(2013年)

摘要

本研究是將多壁奈米碳管經由高溫氧化後，再進行高分子PVP(Polyvinyl pyrrolidone)與界面活性劑SDBS(Sodium dodecyl benzenosulfonate)和Triton X-100的表面改質，再添加BPDA(3,3’,4,4’-Biphenyl tetracarboxylic dianhydride)和p-PDA(p-phenylenediamine)合成聚醯亞胺的前驅物聚醯胺酸，藉由高溫加熱處理形成聚醯亞胺/多壁奈米碳管複合材料。此研究中添加奈米碳管的目的是為了增加複合材料的熱穩定性質、機械性質及導電特性。
本實驗利用傅立葉轉換紅外光譜儀來鑑定化學結構，熱重損失分析儀來探討複材的熱穩定性質，萬能試驗機測定複材的機械性質，超絕緣儀測量複合材料的電阻。藉由奈米碳管的高長徑比可在聚醯亞胺複合材料中形成網狀均勻分布的結構，有效的提升聚醯亞胺/多壁奈米碳管複合材料的導電度，進一步的提升複合材料之熱穩定性及機械性質。

關鍵字

聚醯亞胺 ； 多壁奈米碳管 ； 奈米複合材料 ； 界面活性劑

並列摘要

In this research, MWCNTs were first oxidized at high temperature. The MWCNTs surface was then modified with polyvinyl pyrrolidone (PVP) and surfactant (SDBS and TX-100). After that, the modified MWCNTs were added to poly(amic acid) (PAA, precursor of polyimide), which were reacted from BPDA and p-PDA, to obtain PAA/MWCNTs composite material. The PI/MWCNTs composite were obtained by multi-step thermal curing process. In this study, the MWCNTs were introduced into the PI matrix in order to increase its mechanical and electrical properties.
In this research, the chemical structure of modified MWCNTs was characterized by Fourier transform infrared spectrometer (FTIR). The thermal properties of PI/MWCNTs nanocomposites were analyzed by Thermo-gravimetric analysis (TGA). The mechanical properties and hardness of PI/MWCNTs nanocomposites were tested by Universal Test Machine. The electrical resistance of PI/MWCNTs nanocomposites were obtained by Super Megohmmeter. Due to the high aspect ratio of MWCNTs, the formation of a network structure between PI and modified MWCNTs significantly improves the electrical conductivity and further increases its thermal stability and mechanical properties of the PI nanocomposite.

並列關鍵字

Polyimide ； Multi-wall carbon nanotubes ； Nano-composite ； Surfactant

參考文獻

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