| Summary: | 碩士 === 國立臺北科技大學 === 化學工程所 === 93 === The dissertation describes the studies of the composite films which is composed of the particles of polyaniline (PANI) characterized by conducting polymer, nano-TiO2 as semiconductor nanoparticle, and dimethyl sulfoxide (DMSO), and milled. The properties of these composite films are different from those prepared from electrochemical polymerization.
Physical properties for PANI / nano-TiO2 is assayed via particle size analysis, cycle voltammetry, four-point probe, FTIR and SEM. Different redox potentials show in cycle voltammetry when composites by different percentage particles of nano-TiO2 incorporated into PANI, coated on Pt electrode and dehydrated naturally, and finally put it in acid solution of oxidizing agents.
The results illustrate that the best related physical properties for composite films are made of PANI / nano-TiO2 (46wt.%). In cycle voltammetry, two pairs of redox potentials are available. Besides, adsorbance peaks for PANI/ nano-TiO2 in IR spectrum obviously exhibit red-shift due to DMSO added. Furthermore, the electrical conductivity of composites PANI / nano-TiO2 is estimated to be 0.3∼16 mS/cm by measurements with four-point probe.
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