| Summary: | 碩士 === 國立高雄應用科技大學 === 化學工程與材料工程系博碩士班 === 103 === Polyaniline owns favorable properties of easy preparation, excellent chemical and environmental stability, cheap monomer, and tunable conductivity by protonation or deprotonation. However, it also has the problems of intractable, insolubility, and low processability which have hindered its industrial applications. In order to get a better solubility in organic solvents, nanostructure polyaniline were prepared by self-assembly inverse emulsion polymerization. Using Iron(III) chloride hexahydrate associated n–dodecylbenzenesulfonic acid as the surfactant and associated ammonium persulfate as initiator which behaves as an organically soluble initiators. After adding aniline hydrochloride, a inverse micelle polyaniline solution was obtained.
In this study, the ratio of initiator concentration of monomer can be adjusted to obtain the absorption in the near infrared region, caused by "Free-carrier tail" phenomena. The UV-Vis-NIR measurement indicated the absorption curve trend from 780 nm to 1100 nm gradually became gentle due to the improved hole delocalization and conjugation. Further, the conductivity can be measured from 10-6 to 4.22 S / cm depending on the ratio of monomer and initiator.
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