Preparation and Anti-Corrosion Properties Studies of Polyaniline/Aluminum Oxide Nanocomposite Materials

• Main Authors: Yuan-Fu Yu, 游源福
• Other Authors: Dr. Kuo-Yi Huang
• Format: Others
• Language: zh-TW
• Published: 2010
• Online Access: http://ndltd.ncl.edu.tw/handle/62676299328797553402

碩士 === 華梵大學 === 機電工程學系博碩專班 === 98 === ABSTRACT In this research, a series of polyaniline(PANI)/aluminum oxide nanocomposite materials have been successfully synthesized and characterized by Fourier-Transformation infrared (FTIR) spectroscopy, X-ray diffraction (XRD) patterns and transmission electron microscopy (TEM). The anti-corrosion properties of as-prepared nanocomposite materials were also tested by electrochemical analyzer. Well-dispersed nano aluminum oxide was observed by the TEM analyses of the nanocomposite material containing 3 wt. % of aluminum oxide, in form of film. PANI/aluminum oxide nanocomposite materials, in form of coating, incorporating with low loading (e.g., < 5 wt. %) of nano aluminum oxide (e.g., 10~20 nm) on cold rolled carbon steel, SPCC, were found much superior in corrosion protection over those of neat PANI base on a series of electrochemical measurements of corrosion potential, polarization resistance, corrosion current and alternative current impedance analysis in 5 wt. % aqueous NaCl electrolyte. As the loading of nano aluminum oxide increased, the corrosion potential shifts to a higher potential, the polarization resistance shifts to a higher resistance and the corrosion current shifts to a lower current, indicating anti-corrosion properties were improved. As the results of alternating current impedance, the impedance of polymer membrane was effectively increased by the addition of nanao aluminum oxide. Moreover, it showed more obviously increasing along with the loading content of nano aluminum oxide. This might probably leaded to the significant reducing in corrosion rate on the surface of metal.