| Summary: | 碩士 === 國立臺北科技大學 === 有機高分子研究所 === 104 === In recent decades, PEDOT and polypyrrole are attracted for next generation flexible transparent displays template source. Because of there low energy gap, low electrochemical potential, short reaction time, and high-contrast color changes. However, many studies have reported that aspects of thermal properties of PEDOT and polypyrrole still have to improve, and the conductivity would reduce by prolonged exposure in the general environment. So this study, we use Ethylenediamine modified 3-Aminobenzoic acid. Through emulsion copolymerized with pyrrole and modified monomer, form a novel nano conjugated copolymer. Through cross-linking between the modified monomer, we increase the thermal stability and mechanical strength of the conductive copolymer. FT-IR spectra of our copolymer were observed before and after heating, results show the same pattern but it can’t be qualified by purely polypyrrole. The results prove that thermal stability of the copolymer was better than purely polypyrrole. Four-point probe measurement of electrical conductivity was also use for measuring our copolymer, it exhibit long term reproducibility.
Another experiment, we combined a method to 5% multi-walled carbon nanotubes with in situ polymerization of conductive polymer. Finally add 2-ethylhexyl acrylate and styrene to the copolymer form a stretchable conductive thin film. The conductive film show good tensile strength and electrical conductivity.
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